{"title":"limit switch","description":"","products":[{"product_id":"factory-authorized-parts™-hh18ha586-furnace-high-limit-safety-switch-180-f-auto-reset","title":"Factory Authorized Parts HH18HA586 Furnace High Limit Safety Switch 180°F Auto Reset","description":"\u003ch1\u003eFactory Authorized Parts™ HH18HA586 Furnace High Limit Safety Switch 180°F Auto Reset \u003c\/h1\u003e\n\u003ch2\u003eThe Intelligent Thermal Guard\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHH18HA586\u003c\/strong\u003e is a high-performance primary limit switch (LS1) engineered to serve as the thermal \"brain\" for the safety circuit in high-efficiency gas furnaces. Designed specifically for the \u003cstrong\u003eCarrier, Bryant, and Payne furnace families\u003c\/strong\u003e, this component monitors the temperature of the air passing through the heat exchanger. Its critical function is to prevent internal overheating by interrupting the 24V control circuit if temperatures exceed the safe threshold. As a genuine Factory Authorized Part, it ensures that your system maintains its original engineering specifications, protecting the heat exchanger from thermal stress and ensuring long-term system reliability.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Part Number:\u003c\/strong\u003e Directly replaces part number \u003cstrong\u003eHH18HA586\u003c\/strong\u003e, ensuring 100% electrical compatibility and maintaining the manufacturer’s UL safety rating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision 180°F Calibration:\u003c\/strong\u003e Calibrated to \"open\" at exactly 180°F, providing a rapid safety response to restricted airflow or mechanical failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Reset Logic:\u003c\/strong\u003e Features an auto-reset bi-metal disc that restores the circuit once the furnace cools to safe operating levels, preventing permanent system lockouts during minor airflow fluctuations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Reliability:\u003c\/strong\u003e Engineered to solve \"nuisance tripping\" and clicking noises caused by aged or weakened thermal discs in older furnace units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless Integration:\u003c\/strong\u003e Designed with standard 1\/4\" male spade terminals for a secure, vibration-resistant connection to the factory wiring harness.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Factory Authorized Parts™ (Carrier\/Bryant\/Payne)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e United Technologies \/ Carrier Corp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HH18HA586\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.10 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 24V (Control Circuit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmps\/Watts:\u003c\/strong\u003e 0.5A @ 24VAC (Pilot Duty)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Compatible with HSI and Spark Ignition systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Temperature:\u003c\/strong\u003e 180°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Automatic Reset\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🛠️ HVAC Depot Pro Tip\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\"Take a Picture First!\"\u003c\/strong\u003e Before removing the old switch, photograph the wire colors and the mounting orientation. The HH18HA586 is often mounted in tight spaces where wire reach is limited. After installation, perform a \"Static Pressure Check\": if this switch continues to trip, it is likely doing its job and signaling that your air filter is too restrictive or your evaporator coil is clogged. Never bypass this switch to achieve heat; it is there to prevent a cracked heat exchanger!\u003c\/p\u003e\n\u003cp\u003eCross-Reference\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperseded Numbers:\u003c\/strong\u003e HH18HA231, HH18HA386\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLegacy Numbers:\u003c\/strong\u003e 1013454, 313362-431\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawing Numbers:\u003c\/strong\u003e 1NT01L-4375, 95-313362\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquivalent Brands:\u003c\/strong\u003e ICP (Heil, Tempstar, Comfortmaker), White-Rodgers \/ Emerson\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eModel Compatibility\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e58STA\/STX Series\u003c\/strong\u003e (Suffixes: 045-12, 070-12, 090-14, 110-20, 135-22)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e310A\/J Series\u003c\/strong\u003e (Suffixes: 024045, 036070, 048090, 066110, 066135)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e912S\/915S Series\u003c\/strong\u003e (Suffixes: 30040S, 36060S, 42080S, 60100S, 60120S)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePG8M Series\u003c\/strong\u003e (Suffixes: 045045, 070070, 090090, 110110, 135135)\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"Default Title","offer_id":52235432755563,"sku":"HH18HA586","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/HH18HA138.jpg?v=1772041244"},{"product_id":"factory-authorized-parts™-hh18ha416-furnace-high-limit-safety-switch-180-f","title":"Factory Authorized Parts™ HH18HA416 Furnace High Limit Safety Switch 180°F","description":"\u003ch1\u003eFactory Authorized Parts™ HH18HA416 Furnace High Limit Safety Switch 180°F\u003c\/h1\u003e\n\u003ch2\u003eThe Critical Safety Sentinel of Your Furnace\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHH18HA416\u003c\/strong\u003e is a genuine Factory Authorized Parts™ High Limit Switch, acting as the primary safety \"gatekeeper\" for your HVAC system. This component is the critical hardware link that prevents your furnace from reaching dangerous internal temperatures. If the airflow is restricted or the heat exchanger becomes too hot, this switch triggers an immediate system shutdown to prevent equipment damage and ensure household safety. As a genuine OEM replacement, it is calibrated to the exact thermal specifications required by \u003cstrong\u003eCarrier, Bryant, and Payne\u003c\/strong\u003e equipment, ensuring the system operates within its engineered safety margins.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Thermal Protection:\u003c\/strong\u003e Specifically calibrated to open at \u003cstrong\u003e180°F\u003c\/strong\u003e, providing an essential fail-safe against furnace overheating and potential fire hazards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Reliability:\u003c\/strong\u003e Part number \u003cstrong\u003eHH18HA416\u003c\/strong\u003e is a Factory Authorized Part, ensuring the metallurgy of the bi-metal disc meets strict manufacturer tolerances for cycle life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Safety Integration:\u003c\/strong\u003e Engineered to communicate instantly with the furnace control board to kill the gas valve circuit when thermal limits are exceeded.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResolved Nuisance Tripping:\u003c\/strong\u003e Replaces worn or \"weak\" switches that have drifted from their original temperature settings, preventing premature system lockouts and noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Carrier Family Fit:\u003c\/strong\u003e Designed for a seamless mechanical fit across a wide range of gas furnace platforms without the need for drilling or bracket modification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Factory Authorized Parts™ (Carrier\/Bryant\/Payne)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e United Technologies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HH18HA416\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.15 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 24V (Control Circuit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Temperature:\u003c\/strong\u003e 180°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Automatic Reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Flange Mount \/ Insertion\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🛠️ HVAC Depot Pro Tip\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\"Check Your Airflow First!\"\u003c\/strong\u003e If you are replacing this switch because the old one \"tripped\" or \"failed open,\" always inspect your air filter and evaporator coil before firing the unit back up. A limit switch often fails because it has been forced to cycle too many times due to restricted airflow. If the switch trips again immediately after installation, check for a blocked return air duct or a failing blower motor—the switch is likely doing its job and protecting you from a larger mechanical issue!\u003c\/p\u003e\n\u003ch2\u003eCross-Reference\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLegacy \/ Superseded Numbers:\u003c\/strong\u003e HH18HA411, HH18HA415\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawing Numbers:\u003c\/strong\u003e 313362-402\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquivalent \/ Related Brands:\u003c\/strong\u003e Carrier, Bryant, Payne, Day \u0026amp; Night, White-Rodgers Thermal Disc\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eModel Compatibility\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e310A\/310J Series\u003c\/strong\u003e (Suffixes: 024040, 036040, 036060, 048080, 060100)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e58SB\/58SC Series\u003c\/strong\u003e (Suffixes: 040-08, 040-12, 060-12, 080-16, 100-20, 120-22)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e912S\/915S Series\u003c\/strong\u003e (Suffixes: 30040S, 36060S, 42080S, 48080S, 60100S, 60120S)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePG8M Series\u003c\/strong\u003e (Suffixes: 045040, 045070, 070110)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Carrier","offers":[{"title":"Default Title","offer_id":52235445829995,"sku":"662441983443","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/HH18HA416-1.jpg?v=1772039212"},{"product_id":"factory-authorized-parts™-hh18ha508-switch-limit-ls1-120-160-f-auto-reset","title":"Factory Authorized Parts™ HH18HA508 SWITCH LIMIT (LS1) 120-160°F Auto Reset","description":"\u003ch1\u003eFactory Authorized Parts™ HH18HA508 SWITCH LIMIT (LS1) 120-160°F Auto Reset\u003c\/h1\u003e\n\u003ch2\u003eThe Intelligent Thermal Regulator\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHH18HA508\u003c\/strong\u003e is a critical \"LS1\" primary limit switch engineered to serve as the thermal safety brain for high-performance gas furnaces. Designed specifically for \u003cstrong\u003eCarrier, Bryant, and Payne equipment\u003c\/strong\u003e, this automatic reset switch monitors the temperature of the air passing over the heat exchanger. Its primary function is to prevent system overheating by interrupting the heating cycle if temperatures exceed safe operating parameters. By ensuring the furnace stays within its engineered 120°F to 160°F window, it preserves the integrity of the heat exchanger and maintains the peak efficiency of your HVAC system. \u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExact OEM Part Number:\u003c\/strong\u003e A genuine \u003cstrong\u003eHH18HA508\u003c\/strong\u003e Factory Authorized Part, ensuring 100% mechanical and electrical compatibility with your specific furnace cabinet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Reset Logic:\u003c\/strong\u003e Unlike rollout switches, this \"LS1\" limit features an \u003cstrong\u003eauto-reset\u003c\/strong\u003e function that restores furnace operation once internal temperatures cool to the safe \"cut-in\" threshold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Point Thermal Control:\u003c\/strong\u003e Precision-calibrated to \u003cstrong\u003eopen at 160°F\u003c\/strong\u003e (interrupting heat) and \u003cstrong\u003eclose at 120°F\u003c\/strong\u003e (resuming operation), providing a reliable safety buffer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Safety Monitoring:\u003c\/strong\u003e Continuously communicates with the furnace control board to prevent heat-related damage and ensure the system shuts down safely if airflow is restricted.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick-Connect Installation:\u003c\/strong\u003e Features standard spade terminals for a fast, secure connection to the existing safety circuit, resolving nuisance tripping caused by aging, \"weak\" switches. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Factory Authorized Parts™ (Carrier\/Bryant\/Payne)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Carrier Corporation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HH18HA508\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 120V \/ 24V (Pilot Duty)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 0.84 amp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Automatic Reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e 120°F Cut-In \/ 160°F Cut-Out\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 1\" Depth x 4\" Height x 9\" Width (Package size) \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🛠️ HVAC Depot Pro Tip\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\"Check the Filter Before Replacing!\"\u003c\/strong\u003e If your furnace is short-cycling and you suspect the HH18HA508 has failed, first check for restricted airflow. A dirty air filter, blocked return vents, or a dusty evaporator coil are the most common reasons this switch trips. Before installing the new part, \u003cstrong\u003etake a picture\u003c\/strong\u003e of the mounting orientation; ensure the bi-metal sensing element is fully inserted into the airflow stream for accurate temperature detection.\u003c\/p\u003e\n\u003ch2\u003eCross-Reference\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperseded \/ Legacy Numbers:\u003c\/strong\u003e HH18HA508A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Codes:\u003c\/strong\u003e 1NT01L-4577, 4349808\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC\/Drawing Numbers:\u003c\/strong\u003e 00662442666758, L\/1 \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eModel Compatibility\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e58STA\/STX Series\u003c\/strong\u003e (Suffixes: 070-14116, 070-16108, 070-16112, 070-12116, 070-13116)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e58SB\/SC Series\u003c\/strong\u003e (Suffixes: 0A090E211116, 0A070E171212, 0A090E211116, 0B090M171114, 1A070E171116)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e58PHB\/PHA Series\u003c\/strong\u003e (Suffixes: 070-10116, 070-10112, 090-10114, 090-10116, 110-10120, 110-12120)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePG8M\/PG80 Series\u003c\/strong\u003e (Suffixes: EA048070AAJA, JAA048070ACJA, ESAA48090CBA, ESAA42090BBA, MAA048070ADJA)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e801SA\/811SA Series\u003c\/strong\u003e (Suffixes: 36070E17A-A, 42090E17A-C, 48090E21A-C, 60155E24A-A)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Carrier","offers":[{"title":"Default Title","offer_id":52235450351979,"sku":"662442666758","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/HH18HA416.jpg?v=1772040855"},{"product_id":"goodman-limit-switch-auto-primary-130-to-160-degf-3-in-lg","title":"Goodman B1370187 Primary Limit Switch Auto 130-160°F 3\" LG Specs","description":"\u003ch1\u003eGoodman B1370187 Primary Limit Switch Auto 130-160°F 3\" LG Specs\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eGoodman B1370187 Primary Limit Switch\u003c\/strong\u003e serves as the critical \"safety brain\" of your furnace's heat exchanger assembly. Designed specifically for Goodman, Amana, and Janitrol gas furnace series, this component is responsible for monitoring the internal plenum temperature to prevent hazardous overheating. By acting as a normally closed thermal gate, it ensures that if airflow is restricted—due to a clogged filter or a failing blower motor—the system will safely interrupt the heating cycle before damage occurs. As a Genuine OEM part, it is engineered to handle the high-static environments of modern high-efficiency furnaces with total precision.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Safety Monitoring:\u003c\/strong\u003e Calibrated to trigger a system shutdown at 160°F and automatically reset at 130°F, ensuring the \u003cstrong\u003eB1370187\u003c\/strong\u003e protects your heat exchanger from stress fractures and safety hazards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Fitment:\u003c\/strong\u003e This factory-authorized part eliminates the mounting and calibration issues common with universal \"truck stock\" switches, ensuring the 3-inch probe sits perfectly in the airflow stream.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixes Relay and Noise Issues:\u003c\/strong\u003e Replacing a \"lazy\" or worn limit switch resolves common relay clicking noises and short-cycling issues that cause uneven home heating and excessive wear on the control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Construction:\u003c\/strong\u003e Built with a high-grade pressed steel enclosure for superior durability against the constant thermal expansion and contraction cycles of the HVAC cabinet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Integration:\u003c\/strong\u003e Seamlessly integrates with the furnace's integrated ignition control board to provide real-time thermal protection and highly accurate diagnostic fault code reporting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman \/ Amana\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Daikin Comfort Technologies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart #:\u003c\/strong\u003e B1370187\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.15 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 120V \/ 24V Compatible (13.3 Amps @ 120VAC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Open:\u003c\/strong\u003e 160°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Close:\u003c\/strong\u003e 130°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Length:\u003c\/strong\u003e 3.0 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Compatible with HSI (Hot Surface) and Spark Ignition systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Type:\u003c\/strong\u003e Normally Closed (Opens on Temperature Rise)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\"Take a Picture First\"\u003c\/strong\u003e — Before removing the old switch, photograph the wiring orientation to ensure the 1\/4\" quick-connect terminals are returned to the correct poles. \u003cstrong\u003eDiagnostic Check:\u003c\/strong\u003e If your furnace is short-cycling, check your air filters and blower wheel for dust buildup. A \"tripped\" limit switch is often the first sign of restricted airflow. Always verify the circuit is closed at room temperature using a multimeter before finishing the install.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperseded\/Legacy:\u003c\/strong\u003e B13701-87, B1370187S, 1370187, 10123529\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawing Numbers:\u003c\/strong\u003e 60T81, 313745, 167315\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite-Rodgers\/Emerson Equivalents:\u003c\/strong\u003e 3L11-160, 60T Series\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eModel Compatibility:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMT Series\u003c\/strong\u003e (Suffixes: 045-3, 070-3, 070-4, 090-3, 090-4, 090-5, 115-5, 135-5, 140-5)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMNT Series\u003c\/strong\u003e (Suffixes: 040-3, 060-3, 080-4, 100-4, 120-5)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMS8 Series\u003c\/strong\u003e (Suffixes: 0453AA, 0703AA, 0904AA, 1155CA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGDS8 Series\u003c\/strong\u003e (Suffixes: 0453AA, 0703AA, 0904AA, 1155CA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePGC Series\u003c\/strong\u003e (Suffixes: 103060, 103080, 104100, 105120)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":52235450679659,"sku":"193031151930","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/IMG-B1370187.webp?v=1753870896"},{"product_id":"goodman-1370912s-genuine-oem-service-limit-switch-240-f-7-probe","title":"Goodman 1370912S – Genuine OEM Service Limit Switch (240°F, 7\" Probe)","description":"\u003ch1\u003eGoodman 1370912S – Genuine OEM Service Limit Switch (240°F, 7\" Probe)\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eGoodman 1370912S\u003c\/strong\u003e is a high-precision \u003cstrong\u003eGenuine OEM Service Limit Switch\u003c\/strong\u003e designed for Goodman, Amana, and Janitrol gas furnaces. This critical safety component serves as a \"high-limit\" watchdog, monitoring the heat exchanger temperature and automatically interrupting the heating cycle to prevent overheating and potential system damage.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Performance:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCalibrated to trigger at \u003cstrong\u003e240°F\u003c\/strong\u003e, this switch features an extended \u003cstrong\u003e7-inch insertion probe\u003c\/strong\u003e that allows it to monitor temperatures deep within the furnace cabinet where standard switches might not reach. Utilizing an \u003cstrong\u003eautomatic reset\u003c\/strong\u003e design, the switch will restore the electrical circuit once the system cools to a safe operating temperature (approximately 210°F), ensuring your HVAC system returns to service without manual intervention.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features and Function:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 1: Precision High-Limit Protection:\u003c\/strong\u003e Rated as an \u003cstrong\u003eL240-30F\u003c\/strong\u003e, it strictly opens the circuit at 240°F and closes again when the temperature drops by 30°F.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 2: Extended 7-Inch Reach:\u003c\/strong\u003e The extra-long probe is specifically designed for high-capacity heat exchangers to provide more accurate thermal readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 3: Automatic Safety Reset:\u003c\/strong\u003e Automatically resumes furnace operation once temperatures stabilize, reducing unnecessary service calls for simple overheat events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 4: Genuine OEM Fitment:\u003c\/strong\u003e Manufactured to original factory specifications for a direct-fit, plug-and-play installation without bracket modifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details and Key Specifications:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 1370912S (SKU: 1370912S)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Goodman \/ Amana (Genuine OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Service Limit Switch (High Limit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e Opens @ 240°F \/ Closes @ 210°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsertion Length:\u003c\/strong\u003e 7.0 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Panel Mount with Backplate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Automatic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 0.1 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🛠️ \u003cstrong\u003eHVAC Depot Pro Tip: The \"Filter \u0026amp; Flue\" Verification\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eIf your furnace is \"limit tripping\" with the 1370912S, always check for restricted airflow before replacing the switch. A dirty air filter or a blocked flue pipe are the most common causes for reaching 240°F. If the switch trips and the air filter is clean, verify your blower motor speed is set correctly for your specific heating rise.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference \u0026amp; Compatibility:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e1370912S\u003c\/strong\u003e is a direct OEM replacement for the following part numbers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Numbers:\u003c\/strong\u003e B13709-12, B1370912, B1370012, L240-30F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLegacy Refs:\u003c\/strong\u003e GDML39-250, 60147\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eExtensive Model Compatibility List:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNote: Use 'CTRL+F' to search for your specific model:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGoodman\/Amana GMP Series:\u003c\/strong\u003e GMP050-3, GMP100-5, GMP125-5, GMPE100-4, GMPE100-4A, GMPH080-5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGoodman\/Amana Variable Speed:\u003c\/strong\u003e GMPV100-3, GMPV125-3, GMPV125-5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage\/Other Units:\u003c\/strong\u003e GPD050-3, GSU100-4, GUPI100-4, GUPS100-3, GMP150-52\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":52235451072875,"sku":"1370912S","price":45.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/IMG-1370912S.webp?v=1753871045"},{"product_id":"goodman-b1370187-primary-limit-switch-auto-130-160-f-3-lg-specs","title":"Goodman B1370187 Primary Limit Switch Auto 130-160°F 3\" LG Specs","description":"\u003ch1\u003eGoodman B1370187 Primary Limit Switch Auto 130-160°F 3\" LG Specs\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eGoodman B1370187 Primary Limit Switch\u003c\/strong\u003e serves as the critical \"safety brain\" of your furnace's heat exchanger assembly. Designed specifically for Goodman, Amana, and Janitrol gas furnace series, this component is responsible for monitoring the internal plenum temperature to prevent hazardous overheating. By acting as a normally closed thermal gate, it ensures that if airflow is restricted—due to a clogged filter or a failing blower motor—the system will safely interrupt the heating cycle before damage occurs. As a Genuine OEM part, it is engineered to handle the high-static environments of modern high-efficiency furnaces with total precision.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Safety Monitoring:\u003c\/strong\u003e Calibrated to trigger a system shutdown at 160°F and automatically reset at 130°F, ensuring the \u003cstrong\u003eB1370187\u003c\/strong\u003e protects your heat exchanger from stress fractures and safety hazards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Fitment:\u003c\/strong\u003e This factory-authorized part eliminates the mounting and calibration issues common with universal \"truck stock\" switches, ensuring the 3-inch probe sits perfectly in the airflow stream.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixes Relay and Noise Issues:\u003c\/strong\u003e Replacing a \"lazy\" or worn limit switch resolves common relay clicking noises and short-cycling issues that cause uneven home heating and excessive wear on the control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Construction:\u003c\/strong\u003e Built with a high-grade pressed steel enclosure for superior durability against the constant thermal expansion and contraction cycles of the HVAC cabinet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Integration:\u003c\/strong\u003e Seamlessly integrates with the furnace's integrated ignition control board to provide real-time thermal protection and highly accurate diagnostic fault code reporting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman \/ Amana\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Daikin Comfort Technologies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart #:\u003c\/strong\u003e B1370187\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.15 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 120V \/ 24V Compatible (13.3 Amps @ 120VAC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Open:\u003c\/strong\u003e 160°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Close:\u003c\/strong\u003e 130°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Length:\u003c\/strong\u003e 3.0 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Compatible with HSI (Hot Surface) and Spark Ignition systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Type:\u003c\/strong\u003e Normally Closed (Opens on Temperature Rise)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\"Take a Picture First\"\u003c\/strong\u003e — Before removing the old switch, photograph the wiring orientation to ensure the 1\/4\" quick-connect terminals are returned to the correct poles. \u003cstrong\u003eDiagnostic Check:\u003c\/strong\u003e If your furnace is short-cycling, check your air filters and blower wheel for dust buildup. A \"tripped\" limit switch is often the first sign of restricted airflow. Always verify the circuit is closed at room temperature using a multimeter before finishing the install.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperseded\/Legacy:\u003c\/strong\u003e B13701-87, B1370187S, 1370187, 10123529\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawing Numbers:\u003c\/strong\u003e 60T81, 313745, 167315\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite-Rodgers\/Emerson Equivalents:\u003c\/strong\u003e 3L11-160, 60T Series\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eModel Compatibility:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMT Series\u003c\/strong\u003e (Suffixes: 045-3, 070-3, 070-4, 090-3, 090-4, 090-5, 115-5, 135-5, 140-5)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMNT Series\u003c\/strong\u003e (Suffixes: 040-3, 060-3, 080-4, 100-4, 120-5)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMS8 Series\u003c\/strong\u003e (Suffixes: 0453AA, 0703AA, 0904AA, 1155CA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGDS8 Series\u003c\/strong\u003e (Suffixes: 0453AA, 0703AA, 0904AA, 1155CA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePGC Series\u003c\/strong\u003e (Suffixes: 103060, 103080, 104100, 105120)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":52235451761003,"sku":"193031151732","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/IMG-B1370155.webp?v=1753871202"},{"product_id":"rheem-ruud-47-22861-03-limit-switch-manual-reset-flanged-airstream-180-f","title":"Rheem Ruud 47-22861-03 Limit Switch Manual Reset Flanged Airstream 180°F","description":"\u003ch1\u003e\u003cstrong\u003e Rheem\/Ruud OEM Focus and System Function\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003eThe 47-22861-03 serves as a critical safety \"sentinel\" for Rheem and Ruud gas-fired furnaces. Known as a manual reset limit switch, it acts as the primary defense against heat exchanger failure and fire hazards. This flanged airstream sensor monitors the internal temperature of the furnace cabinet; if temperatures exceed safe operating limits, the switch breaks the 24V circuit to the gas valve, instantly killing the flame. Unlike automatic switches, this manual reset model requires a technician to physically inspect the system for obstructions (like a dead blower motor or clogged filter) before the furnace can be restarted, ensuring the root cause of the overheat is addressed.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Part (47-22861-03):\u003c\/strong\u003e Engineered specifically for Rheem\/Ruud furnace logic to ensure the trip-point calibration perfectly matches the heat exchanger's metallurgy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual Reset Safety:\u003c\/strong\u003e Prevents the dangerous \"cycling\" of a furnace that is overheating, forcing a manual inspection of the system's airflow health.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlanged Airstream Design:\u003c\/strong\u003e Features a precision-length probe that sits directly in the hottest part of the cabinet for instantaneous thermal response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixes \"No Heat\" Trip Issues:\u003c\/strong\u003e Replaces older, weakened bi-metal discs that \"nuisance trip\" even when the furnace is within normal operating temperatures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Circuit Integration:\u003c\/strong\u003e Designed with standard 1\/4\" spade terminals for a secure, vibration-resistant connection to the safety string.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Rheem \/ Ruud\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Protech (Genuine OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 47-22861-03\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.2 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 24VAC (Control Circuit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Temperature:\u003c\/strong\u003e 180°F (Fixed)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Manual Push-Button\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Flanged Airstream (Inserted)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Compatible with Spark, Hot Surface, and Standing Pilot systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip: The \"Filter First\" Check\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBefore replacing a tripped 47-22861-03, \u003cstrong\u003etake a picture of your current wiring orientation.\u003c\/strong\u003e A tripped manual limit is almost always a symptom of a larger airflow issue. Check your air filter and blower wheel for dust buildup first. If the switch trips again immediately after being reset, use a manometer to check your static pressure—high static pressure from undersized ductwork is the #1 killer of these switches.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperseded Numbers:\u003c\/strong\u003e 47-22861-01, 47-21444-03\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLegacy Numbers:\u003c\/strong\u003e 47-101444-03, 47-22161-03\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawing Number:\u003c\/strong\u003e 101444-03-A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite-Rodgers\/Emerson Equivalents:\u003c\/strong\u003e 3L05-180, L180F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eModel Compatibility:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eR801S\u003c\/strong\u003e (Suffixes: 050, 075, 100, 125, 150)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR801P\u003c\/strong\u003e (Suffixes: 050, 075, 100, 125)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR802P\u003c\/strong\u003e (Suffixes: 075, 100, 125)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRGPE\u003c\/strong\u003e (Suffixes: 05, 07, 10, 12)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRGJF\u003c\/strong\u003e (Suffixes: 06, 09, 10, 12)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eU801S\u003c\/strong\u003e (Suffixes: 050, 075, 100, 125)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUGPE\u003c\/strong\u003e (Suffixes: 05, 07, 10, 12)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Rheem","offers":[{"title":"Default Title","offer_id":52235476074859,"sku":"0662766315660","price":55.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/47-22861-03.jpg?v=1773420804"},{"product_id":"goodman-b1370189-primary-limit-switch-200-f-30-f-thermal-safety-oem-replacement","title":"Goodman B1370189 Primary Limit Switch 200°F-30°F Thermal Safety OEM Replacement","description":"\u003ch1\u003e\u003cstrong\u003eGoodman B1370189 Primary Limit Switch 200°F-30°F Thermal Safety OEM Replacement\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eGoodman B1370189 \u003c\/strong\u003eis a critical safety component that acts as the \"brain\" for \u003cstrong\u003ehigh\u003c\/strong\u003e-\u003cstrong\u003etemperature \u003c\/strong\u003ethermal \u003cstrong\u003eprotection \u003c\/strong\u003ewithin your furnace. This \u003cstrong\u003egenuine OEM \u003c\/strong\u003eprimary \u003cstrong\u003elimit switch \u003c\/strong\u003eis designed to monitor the temperature of the heat exchanger, ensuring that the system \u003cstrong\u003edoes not exceed \u003c\/strong\u003esafe operating parameters. It is specifically \u003cstrong\u003eengineered for \u003c\/strong\u003ethe \u003cstrong\u003eGMS8\u003c\/strong\u003e, \u003cstrong\u003eGDS8\u003c\/strong\u003e, and \u003cstrong\u003eGMS9 \u003c\/strong\u003efurnace series. By detecting restricted airflow—often caused by a dirty filter or failing blower—this \u003cstrong\u003eswitch serves \u003c\/strong\u003eas a \u003cstrong\u003efail-safe\u003c\/strong\u003e that breaks the 24V circuit to the \u003cstrong\u003egas valve\u003c\/strong\u003e, \u003cstrong\u003epreventing \u003c\/strong\u003eheat exchanger \u003cstrong\u003edamage \u003c\/strong\u003eand ensuring the safety of your home.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Part Number B1370189: \u003c\/strong\u003eThis factory-calibrated safety device ensures the temperature trip points match the original design specifications of your Goodman\/Amana unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise Thermal Calibration: \u003c\/strong\u003eFeatures a 200°F \"Open\" and 170°F \"Close\" (30°F differential) setting, providing the exact sensitivity needed to protect the heat exchanger from warping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixes Intermittent \"No Heat\" Issues:\u003c\/strong\u003e Replaces aging switches that have become \"weak\" or \"lazy,\" causing the furnace to cycle off prematurely before reaching the thermostat setpoint.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Safety Monitoring:\u003c\/strong\u003e Provides a constant thermal watchdog for the combustion chamber, immediately halting gas flow if the internal cabinet temperature rises above the 200°F threshold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGold-Plated or High-Temp Contacts:\u003c\/strong\u003e Engineered to handle thousands of cycles in high-heat environments without the internal contacts pitting or sticking.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman \/ Amana \/ Janitrol\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Goodman Manufacturing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart #: \u003c\/strong\u003eB1370189\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC\/SKU:\u003c\/strong\u003e 662766113971 \/ 193031151954\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 1 LB ounces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 24 VAC (Control Circuit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Temperature:\u003c\/strong\u003e 200°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClose Temperature:\u003c\/strong\u003e 170°F (30°F Differential)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Standard Flange Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e 1\/4\" Male Quick Connect\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\"Check the Filter First\"—before you replace the B1370189, verify that your furnace air filter is clean and that all supply registers are open. A primary limit switch usually trips because of an airflow restriction, not because the switch is \"bad.\" During your Diagnostic Check, observe the furnace LED: if you see a \"Limit Switch Open\" code (typically 4 flashes), ensure the blower motor is spinning at the correct speed. 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This \u003cstrong\u003einterlock switch \u003c\/strong\u003eis a momentary contact device that monitors the position of the blower access panel. Specifically engineered for the \u003cstrong\u003eGMS8\u003c\/strong\u003e, \u003cstrong\u003eGDS8\u003c\/strong\u003e, and \u003cstrong\u003eGMP series\u003c\/strong\u003e, it acts as a primary fail-safe, \u003cstrong\u003einstantly cutting high\u003c\/strong\u003e-\u003cstrong\u003evoltage power to \u003c\/strong\u003ethe \u003cstrong\u003econtrol board and blower motor \u003c\/strong\u003eif the door is removed. Utilizing this factory-authorized replacement ensures your system remains compliant with \u003cstrong\u003eUL safety standards\u003c\/strong\u003e, preventing accidental contact with live electrical components or moving blower wheels during maintenance.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue OEM Specification:\u003c\/strong\u003e Explicitly manufactured under part number 10690402S to match the original factory spring tension and electrical contact ratings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstant Circuit Interruption:\u003c\/strong\u003e Engineered to fix specific \"intermittent power\" issues caused by weak internal springs or pitted electrical contacts in aging door switches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Voltage Safety Monitoring:\u003c\/strong\u003e Features a heavy-duty pole configuration capable of handling the full 120V input load, ensuring a 100% power lockout when the cabinet is breached.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSnap-In Installation Design:\u003c\/strong\u003e Designed for tool-free mounting in standard Goodman and Amana furnace chassis, providing a secure fit that won't vibrate loose during high-velocity airflow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArc-Resistant Housing:\u003c\/strong\u003e Constructed from high-temp, flame-retardant plastic to prevent electrical tracking and ensure long-term reliability in the heat-stressed environment of the blower compartment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand: \u003c\/strong\u003eGoodman-Amana \/ Janitrol\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Daikin Comfort Technologies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number: \u003c\/strong\u003e10690402S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC: \u003c\/strong\u003e786710106904\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 10690402S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 1 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 120 \/ 240 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 10A - 15A Rated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Type:\u003c\/strong\u003e SPST (Single Pole Single Throw), Normally Open (NO)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Size:\u003c\/strong\u003e 1\/4\" Male Spade Connectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting: \u003c\/strong\u003eSnap-in Panel Mount\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTake a Picture of the Wire Terminals First: Before pulling the wires off the old switch, photograph the connections. These switches often use two black wires (hot leg), and reversing them won't affect the switch, but ensuring they are seated tightly on the new \u003cstrong\u003e10690402S spade terminals \u003c\/strong\u003eis critical for preventing electrical arcing. After installation, perform a Diagnostic Check by manually depressing the switch button with the door off; if the furnace powers up, you know the circuit is restored, but always ensure the door panel fully engages the switch when reinstalled.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eSuperseded \/ Legacy Numbers:\u003c\/strong\u003e\u003c\/h3\u003e\n10690402, B13708, B1370803, 0130F00025, 0130F00025S\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eHoneywell \/ Microswitch Equivalents: \u003c\/strong\u003e\u003c\/h3\u003e\nAC Series Interlock Switches\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eDrawing Numbers:\u003c\/strong\u003e\u003c\/h3\u003e\n1069-0402 Switch Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eModel Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMS8 \u003c\/strong\u003e(Suffixes: 0403AX, 0453AX, 0603AX, 0703AX, 0804BX, 0904BX, 1005CX, 1155CX)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGDS8 \u003c\/strong\u003e(Suffixes: 0403AX, 0603AX, 0804BX, 1005CX)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMP \u003c\/strong\u003e(Suffixes: 050-3, 075-3, 100-3, 100-4, 125-5, 150-5)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMPN \u003c\/strong\u003e(Suffixes: 040-3, 060-3, 080-4, 100-4, 120-5)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGHS8 \u003c\/strong\u003e(Suffixes: 0403AX, 0453AX, 0603AX)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMNT \u003c\/strong\u003e(Suffixes: 040-3, 060-3, 080-4, 100-4, 120-5)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":52451501048171,"sku":"10690402S","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/10690402S.jpg?v=1773157322"},{"product_id":"factory-authorized-parts™-hh18ha502-furnace-high-limit-safety-switch-135-f-175-f-auto-reset","title":"Factory Authorized Parts™ HH18HA502 Furnace High Limit Safety Switch 135°F-175°F Auto Reset","description":"\u003ch1\u003eFactory Authorized Parts™ HH18HA502 Furnace High Limit Safety Switch 135°F-175°F Auto Reset\u003c\/h1\u003e\n\u003ch2\u003eThe Precision Thermal Monitor\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHH18HA502\u003c\/strong\u003e is a primary \"LS1\" limit switch engineered to serve as the critical safety \"brain\" for high-efficiency Carrier, Bryant, and Payne gas furnaces. This genuine Factory Authorized Part is responsible for monitoring the internal temperature of the heat exchanger assembly. By acting as a constant thermal gatekeeper, it prevents the furnace from reaching hazardous temperatures that could lead to equipment failure or fire. If airflow is restricted—causing a rapid rise in heat—this switch interrupts the control circuit to shut down the burners, only allowing operation to resume once temperatures have returned to safe, engineered levels.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Replacement:\u003c\/strong\u003e Specifically designed as part number \u003cstrong\u003eHH18HA502\u003c\/strong\u003e to maintain the original safety certifications and factory warranty of your HVAC system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Temperature Calibration:\u003c\/strong\u003e Engineered to \"Open\" (Cut-out) at \u003cstrong\u003e175°F\u003c\/strong\u003e and \"Close\" (Cut-in) at \u003cstrong\u003e135°F\u003c\/strong\u003e, ensuring the furnace operates within a narrow, safe thermal window.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Reset Technology:\u003c\/strong\u003e Features a bi-metal disc that automatically resets the heating cycle once the system cools, eliminating the need for manual intervention during temporary airflow fluctuations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Integrity Protection:\u003c\/strong\u003e Prevents premature cracking of the heat exchanger by ensuring the furnace never exceeds its maximum design temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration-Resistant Terminals:\u003c\/strong\u003e Equipped with heavy-duty spade connectors designed to withstand the constant vibrations of the blower motor and inducer assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Factory Authorized Parts™ (Carrier\/Bryant\/Payne)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e United Technologies \/ Carrier Corp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HH18HA502\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.10 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 24V (Control Circuit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmps\/Watts:\u003c\/strong\u003e 0.5A @ 24VAC (Pilot Duty)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Temperature:\u003c\/strong\u003e 175°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClose Temperature:\u003c\/strong\u003e 135°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Automatic Reset\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🛠️ HVAC Depot Pro Tip\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\"Check the Coil!\"\u003c\/strong\u003e If you are replacing a tripped HH18HA502, don't stop at the air filter. A frequent cause for this switch opening at 175°F is a dirty \u003cstrong\u003eA-Coil (Evaporator Coil)\u003c\/strong\u003e located above the furnace. Even with a clean filter, a clogged coil blocks airflow and causes heat to back up into the heat exchanger. \u003cstrong\u003eTake a picture\u003c\/strong\u003e of the switch orientation before removal to ensure the sensing element is positioned exactly in the center of the airflow path for accurate monitoring.\u003c\/p\u003e\n\u003ch2\u003eCross-Reference\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLegacy \/ Superseded Numbers:\u003c\/strong\u003e HH18HA451, HH18HA457\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawing Numbers:\u003c\/strong\u003e 313362-457, 1NT01L-4577\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquivalent Brands:\u003c\/strong\u003e ICP (Heil, Tempstar, Comfortmaker), White-Rodgers \/ Emerson\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eModel Compatibility\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e58STA\/STX Series\u003c\/strong\u003e (Suffixes: 045-12, 070-12, 090-14, 090-16, 110-20)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e310A\/J Series\u003c\/strong\u003e (Suffixes: 024045, 036070, 048090, 060090, 066110)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e912S\/915S Series\u003c\/strong\u003e (Suffixes: 30040S, 42060S, 48080S, 60100S)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePG8M Series\u003c\/strong\u003e (Suffixes: 045045, 070070, 090090, 110110)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e58SB\/SC Series\u003c\/strong\u003e (Suffixes: 040-12, 070-12, 090-16, 110-20)\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"Default Title","offer_id":52451503145323,"sku":"662442554260","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/HH18HA490_9516d0cd-57ba-46c3-b30e-1d9ea6087f6b.jpg?v=1772041426"},{"product_id":"lennox-73w19-genuine-oem-limit-control-switch-155-f-open-125-f-close-102857-06","title":"Lennox 73W19 Genuine OEM Limit Control Switch 155°F Open \/ 125°F Close 102857-06","description":"\u003ch1\u003eLennox 73W19 Genuine OEM Limit Control Switch 155°F Open \/ 125°F Close 102857-06\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eLennox 73W19\u003c\/strong\u003e (Model 102857-06) is a critical safety component designed for Lennox high-efficiency gas furnaces. Known as a \u003cstrong\u003ePrimary Limit Control\u003c\/strong\u003e, this \"STILT\" style sensor monitors the temperature of the heat exchanger. Its primary role is to protect your home and equipment by cutting power to the gas valve if the internal furnace temperature exceeds safe operating limits.\u003c\/p\u003e\n\u003cp\u003eThis specific sensor is factory-calibrated to \u003cstrong\u003eactuate (open) at 155°F\u003c\/strong\u003e and automatically \u003cstrong\u003ereset (close) at 125°F\u003c\/strong\u003e. Featuring a distinct \u003cstrong\u003eyellow sleeve\u003c\/strong\u003e for easy identification and a \u003cstrong\u003e5-inch Overall Length (OAL)\u003c\/strong\u003e, it is engineered for a \"Left Orientation\" mount. 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A limit trip usually indicates \u003cstrong\u003erestricted airflow\u003c\/strong\u003e. Before replacing the part, check for a dirty air filter, blocked return vents, or a failing blower motor. 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This fixed-temperature limit control monitors the heat exchanger’s internal environment; if temperatures exceed 120°F due to a blower failure or restricted airflow, the switch \"opens\" the electrical circuit to the gas valve, instantly killing the flame. Specifically engineered for \u003cstrong\u003eGoodman, Amana, and Janitrol\u003c\/strong\u003e furnace series, this sensor ensures the system remains within safe thermal operating limits. As a genuine OEM component, it features the precise bimetal sensitivity required to prevent heat exchanger warping and ensure your home remains safe from fire hazards. \u003c\/p\u003e\n\u003ch2\u003eKey Features and Function:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Thermal Management:\u003c\/strong\u003e Calibrated to trip at exactly 120°F and automatically reset when the temperature drops by 30°F (L120-30), ensuring a fail-safe heating cycle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Reliability\/Fitment:\u003c\/strong\u003e Features the exact insertion depth and mounting bracket geometry required for a \"drop-in\" installation in Goodman burner and blower partitions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCritical Safety Integration:\u003c\/strong\u003e Directly communicates with the furnace control board to trigger \"Limit Switch Open\" fault codes, allowing for rapid diagnostics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Bimetal Build:\u003c\/strong\u003e Constructed with high-grade thermal discs designed to endure thousands of cycles without drifting from the factory temperature setpoint. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Details and Key Specifications:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1370155 (Replaces B13701-55, 313745, B1370141)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Goodman \/ Amana (Genuine OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Fixed Temperature Limit Control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart SKU\u003c\/strong\u003e: 076335072586\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e Open: 120°F | Close: 90°F (30°F Differential)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 24 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrientation:\u003c\/strong\u003e Normally Closed (NC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e 1\/4\" Male Quick-Connect Terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 1 lb \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🛠️ HVAC Depot Pro Tip: The Airflow Audit\u003c\/h2\u003e\n\u003cp\u003eIf your furnace is \"tripping\" on the \u003cstrong\u003eB1370155 limit switch\u003c\/strong\u003e, the switch is likely doing its job, not failing. Before replacing it, perform a \u003cstrong\u003eDiagnostic Check\u003c\/strong\u003e on your airflow. A dirty air filter, blocked return vents, or a failing blower motor are the most common causes of high-limit trips. If the furnace fires for a few minutes and then shuts down while the blower is still running, check for a cracked heat exchanger or a clogged A-coil. Always verify the temperature stamped on the side of the old switch matches \"L120\" before installing the new one. \u003c\/p\u003e\n\u003ch2\u003eCross-Reference \u0026amp; Compatibility:\u003c\/h2\u003e\n\u003cp\u003eThe B1370155 is a direct OEM replacement for the following part numbers: \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eOEM Numbers:\u003c\/strong\u003e\u003c\/h3\u003e\n B1370155, B13701-55, 313745, B1370141, B13701-41\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eTherm-O-Disc:\u003c\/strong\u003e\u003c\/h3\u003e\n 60T11, 313745, L120-30\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eWhite-Rodgers:\u003c\/strong\u003e\u003c\/h3\u003e\n 3L01-120\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eAftermarket Cross:\u003c\/strong\u003e\u003c\/h3\u003e\n ClimaTek B13701-55, Mars 39155 \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eExtensive Model Compatibility List:\u003c\/h2\u003e\n\u003cp\u003eNote: Use 'CTRL+F' to search for your specific model:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGoodman GMS8 Series:\u003c\/strong\u003e GMS80403AN, GMS80603AN, GMS80804BN, GMS81005CN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGoodman GDS8 Series:\u003c\/strong\u003e GDS80403AX, GDS80603AX, GDS80804BX, GDS81005CX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmana AMES8 Series:\u003c\/strong\u003e AMES80403AN, AMES80603AN, AMES80804BN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJanitrol GMP Series:\u003c\/strong\u003e GMP050-3, GMP075-3, GMP100-3, GMP125-4, GMP150-5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJanitrol GDT Series:\u003c\/strong\u003e GDT050-3, GDT075-3, GDT100-4, GDT115-5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMC Units:\u003c\/strong\u003e Various legacy 80% and 90% AFUE furnace configurations. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":52572362670443,"sku":"B1370155","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/B1370155_3546360a-3ed1-4984-923c-297b7acc40b3.jpg?v=1763413380"},{"product_id":"goodman-b1370188-genuine-oem-primary-limit-switch-l170-40f","title":"Goodman B1370188 – Genuine OEM Primary Limit Switch (L170-40F)","description":"\u003ch1\u003eGoodman B1370188 – Genuine OEM Primary Limit Switch (L170-40F)\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eGoodman B1370188\u003c\/strong\u003e is a critical \u003cstrong\u003eGenuine OEM Primary Limit Switch\u003c\/strong\u003e designed for Goodman, Amana, and Janitrol gas furnaces. This safety-critical sensor acts as the primary \"high-limit\" watchdog for the heat exchanger, ensuring the burner circuit is interrupted if internal temperatures exceed safe factory parameters, preventing equipment damage and potential fire hazards.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Performance:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFactory-calibrated with an \u003cstrong\u003eL170-40F\u003c\/strong\u003e rating, this switch is designed to \u003cstrong\u003eopen at 170°F\u003c\/strong\u003e and automatically \u003cstrong\u003ereset (close) once the temperature drops by 40°F\u003c\/strong\u003e (to 130°F). As a \"normally closed\" component in the 24V safety string, it provides instantaneous response to restricted airflow conditions, ensuring the furnace fails into a safe state if the blower motor or air filter fails.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features and Function:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 1: Precision Thermal Protection:\u003c\/strong\u003e Engineered to trip at exactly 170°F to protect the structural integrity of the heat exchanger.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 2: Automatic Reset Logic:\u003c\/strong\u003e The switch restores the electrical circuit automatically once the system cools, allowing the furnace to resume normal operation after the fault is cleared.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 3: High-Grade Bimetal Actuator:\u003c\/strong\u003e Features a rapid-response bimetal disc that ensures accurate temperature sensing over thousands of heating cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 4: Direct-Fit Mounting:\u003c\/strong\u003e Features a standard two-hole mounting flange for a secure, airtight seal against the furnace plenum or blower deck.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details and Key Specifications:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1370188 (Replaces B13701-88, 11114701)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Goodman \/ Amana (Genuine OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Primary High Limit Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e Opens @ 170°F \/ Closes @ 130°F (L170-40)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 24V \/ 60Hz Control Circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e 2-Hole Flange Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Automatic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 0.1 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🛠️ \u003cstrong\u003eHVAC Depot Pro Tip: The \"Static Pressure\" Check\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eIf this 170°F limit switch is tripping, your furnace is likely \"panting\" for air. Before replacing the switch, check your air filter and ensure all supply registers are open. A high-efficiency furnace with a high-MERV 1-inch filter often creates enough static pressure to trip a 170-degree limit. Consider switching to a lower-resistance filter if you experience nuisance trips after installation.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference \u0026amp; Compatibility:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eB1370188\u003c\/strong\u003e is a direct OEM replacement for the following part numbers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Numbers:\u003c\/strong\u003e B13701-88, B1370188, 11114701, L170-40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Refs:\u003c\/strong\u003e L170, 36TX11, 20162904 (compatible setpoints)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eExtensive Model Compatibility List:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGoodman GMS8 Series:\u003c\/strong\u003e GMS80403AN, GMS80603AN, GMS80804BN, GMS81005CN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGoodman GDS8 Series:\u003c\/strong\u003e GDS80403AN, GDS80603AN, GDS80804BN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmana AMH8 Series:\u003c\/strong\u003e AMH80403AN, AMH80603AN, AMH80804BN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaged Units:\u003c\/strong\u003e GPG, APG, GPC Series\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":52572383969643,"sku":"193031151947","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/B1370188.jpg?v=1768668248"},{"product_id":"goodman-amana-b1370200-manual-reset-flame-rollout-limit-switch-genuine-oem-350-f-green","title":"Goodman Amana B1370200 Manual Reset Flame Rollout Limit Switch – Genuine OEM 350°F Green","description":"\u003cdiv width=\"50%,33%,20%,,16.6%\" class=\"Box-sc-1z9git-0 Flex-sc-1qhr4qe-0 hgmMGM lmqYFk\"\u003e\n\u003ch1\u003eGoodman Amana B1370200 Manual Reset Flame Rollout Limit Switch – Genuine OEM 350°F Green\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eGoodman Amana B1370200 Flame Rollout Switch\u003c\/strong\u003e is the ultimate safety \"brain\" for your furnace’s burner compartment. Distinguished by its \u003cstrong\u003eGreen\u003c\/strong\u003e circular dot, this manual reset limit is designed to detect \"flame rollout\"—a hazardous condition where flames spill out of the heat exchanger toward the gas valve and wiring. Specifically engineered for \u003cstrong\u003eGoodman, Amana, and Janitrol\u003c\/strong\u003e furnace series, this sensor acts as a permanent circuit breaker; if temperatures hit 350°F, it \"trips\" and stays open, requiring a manual intervention to restore power. As a genuine OEM component, it ensures your heating system stays locked out until a technician can verify that the heat exchanger is intact and the venting is clear.\u003c\/p\u003e\n\u003ch2\u003eKey Features and Function:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCritical Safety Integration:\u003c\/strong\u003e Monitors the burner vestibule for excessive heat caused by cracked heat exchangers, clogged flues, or insufficient combustion air.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual Reset Logic:\u003c\/strong\u003e Unlike auto-reset switches, this model features a red center button that must be physically pressed to restore furnace operation, forcing a safety check of the system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Reliability\/Fitment:\u003c\/strong\u003e Features the exact small-footprint mounting bracket and high-temperature porcelain insulator required for Goodman burner boxes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor-Coded for Accuracy:\u003c\/strong\u003e The Green dot signifies a specific 350°F trip point, ensuring you don't accidentally install a lower-rated switch that would cause nuisance tripping.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Details and Key Specifications:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1370200 (Replaces B13702-00, 101235-33)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Goodman \/ Amana (Genuine OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Manual Reset Flame Rollout Limit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e 350°F (Open) | Manual Reset (Close)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentification:\u003c\/strong\u003e Green Dot \/ Green Marking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 24 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e 1\/4\" Male Quick-Connect Terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 0.1 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🛠️ HVAC Depot Pro Tip: The \"Don't Just Reset\" Rule\u003c\/h2\u003e\n\u003cp\u003eIf you find your furnace is dead and the \u003cstrong\u003eB1370200 switch\u003c\/strong\u003e has tripped (button is popped up), \u003cstrong\u003edo not simply press it and walk away.\u003c\/strong\u003e A tripped rollout switch is a major red flag for a blocked exhaust vent or a cracked heat exchanger. During your \u003cstrong\u003eDiagnostic Check\u003c\/strong\u003e, inspect the burner area for soot or scorched wiring. If the switch trips again shortly after resetting, shut off the gas immediately and have the heat exchanger professionally inspected for safety.\u003c\/p\u003e\n\u003ch2\u003eCross-Reference \u0026amp; Compatibility:\u003c\/h2\u003e\n\u003cp\u003eThe B1370200 is a direct OEM replacement for the following part numbers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Numbers:\u003c\/strong\u003e B1370200, B13702-00, 101235-33, 10123533\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTherm-O-Disc:\u003c\/strong\u003e 60TX11, L350F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAftermarket Cross:\u003c\/strong\u003e ClimaTek B13702-00, Mars 39100\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eExtensive Model Compatibility List:\u003c\/h2\u003e\n\u003cp\u003eNote: Use 'CTRL+F' to search for your specific model:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGoodman GMS8 Series:\u003c\/strong\u003e GMS80403AN, GMS80603AN, GMS80804BN, GMS81005CN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGoodman GDS8 Series:\u003c\/strong\u003e GDS80403AX, GDS80603AX, GDS80804BX, GDS81005CX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGoodman GMH95 Series:\u003c\/strong\u003e GMH950453BX, GMH950703BX, GMH950904CX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmana AMES8 Series:\u003c\/strong\u003e AMES80403AN, AMES80603AN, AMES80804BN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJanitrol GMP Series:\u003c\/strong\u003e GMP050-3, GMP075-3, GMP100-3, GMP125-4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Units:\u003c\/strong\u003e GPG, GPH, APG series (Typically located near the burner orifice)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":52572406350187,"sku":"193031221848","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/10123529SP.jpg?v=1765993881"},{"product_id":"goodman-20162904s-genuine-oem-service-limit-switch-brown-7-probe","title":"Goodman 20162904S – Genuine OEM Service Limit Switch (Brown, 7\" Probe)","description":"\u003ch1\u003eGoodman 20162904S – Genuine OEM Service Limit Switch (Brown, 7\" Probe)\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eGoodman 20162904S\u003c\/strong\u003e is a high-precision \u003cstrong\u003eGenuine OEM Service Limit Switch\u003c\/strong\u003e designed for Goodman, Amana, and Janitrol gas furnaces. Easily identified by its distinct \u003cstrong\u003ebrown color code\u003c\/strong\u003e, this critical safety component monitors the heat exchanger’s internal temperature, automatically interrupting the heating cycle if temperatures exceed safe factory limits to prevent system damage. \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical Performance:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis switch features an extended \u003cstrong\u003e7-inch immersion probe\u003c\/strong\u003e, allowing it to reach deep into the furnace cabinet for accurate thermal sensing in high-capacity heat exchangers. As a \"normally closed\" safety device, it is engineered to open the 24V control circuit upon reaching its specific high-limit setpoint and utilizes an \u003cstrong\u003eautomatic reset\u003c\/strong\u003e function to restore furnace operation once the system has cooled to a safe temperature. \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features and Function:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 1: Precision High-Limit Monitoring:\u003c\/strong\u003e Calibrated to protect the heat exchanger from cracks and overheating by breaking the ignition circuit instantly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 2: Extended 7-Inch Reach:\u003c\/strong\u003e The long probe design ensures the sensor is positioned in the \"hottest\" zone of the airflow for rapid response times.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 3: Brown Color-Coded Housing:\u003c\/strong\u003e Specifically coded to ensure technicians install the correct temperature-rated switch for the furnace's BTU output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature 4: Automatic Reset Logic:\u003c\/strong\u003e Once the blower cools the heat exchanger, the switch automatically closes, allowing the furnace to attempt a new heating cycle. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details and Key Specifications:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 20162904S (Replaces 20162904, B13701-54)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Goodman \/ Amana (Genuine OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Service Limit Switch (High Limit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor Code:\u003c\/strong\u003e Brown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsertion Length:\u003c\/strong\u003e 7.0 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Flat Flange Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Automatic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 0.2 lbs \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🛠️ \u003cstrong\u003eHVAC Depot Pro Tip: The \"Why Did It Trip?\" Investigation\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eA limit switch rarely fails on its own; it usually trips because of an airflow issue. If you are replacing this switch, always check for a dirty air filter, a clogged secondary heat exchanger, or a failing blower motor capacitor. Replacing the switch without fixing the underlying airflow restriction will likely result in the new switch \"cycling\" and eventually failing as well. \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference \u0026amp; Compatibility:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e20162904S\u003c\/strong\u003e is a direct OEM replacement for the following part numbers: \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Numbers:\u003c\/strong\u003e 20162904, B13701-54, B1370154, 10123534\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Refs:\u003c\/strong\u003e L170-40F (Commonly used in 170-degree configurations) \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eExtensive Model Compatibility List:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGoodman GMS8 Series:\u003c\/strong\u003e GMS80403AN, GMS80603AN, GMS80804BN, GMS81005CN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGoodman GDS8 Series:\u003c\/strong\u003e GDS80403AN, GDS80603AN, GDS80804BN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmana AMES8 Series:\u003c\/strong\u003e AMES80403AN, AMES80603AN, AMES80804BN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaged Units:\u003c\/strong\u003e GPG13, GPG14, APG13, APG14 Series\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":52572418900331,"sku":"193031468885","price":45.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/20162904S-2.jpg?v=1765993286"},{"product_id":"goodman-amana-auto-limit-switch-120f-130f-0130f00038-0130f00038s","title":"OEM Goodman-Amana Auto Limit Switch (120F - 130F) 0130F00038","description":"\u003cp\u003eThe code 0130F00038S identifies a specific Amana-Goodman automatic limit switch, a crucial safety component in HVAC systems that monitors internal temperatures, typically shutting off the heat if it exceeds the 120°F to 130°F range to prevent overheating and maintain safe operation. It's a genuine OEM replacement part, often light blue, designed for various Goodman, Amana, and compatible furnaces, ensuring efficient and safe heating. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Characteristics:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Acts as a safety device to prevent furnace overheating by cutting power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Rating: \u003c\/strong\u003eAuto-opens between 120°F and 130°F.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Used in Goodman, Amana, and other HVAC systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAppearance:\u003c\/strong\u003e Often identified as light blue. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it does in your system:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen your furnace gets too hot, this switch detects the excess temperature and automatically cuts the fuel supply or shuts down the heating element, then resets once the system cools, protecting your equipment and ensuring safe indoor comfort. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e0130F00038S is a genuine OEM automatic reset primary limit switch (not a pressure switch as with previous parts). It functions as a safety device in Goodman, Amana, Janitrol, and Daikin HVAC systems to prevent overheating.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical and Temperature Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating: \u003c\/strong\u003eThis switch operates on 120 VAC (Volts AC).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e The specific amperage is not universally listed but is designed for standard control circuit loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation Type:\u003c\/strong\u003e It is an \"auto-reset\" type switch. When the temperature drops below the operating range, it automatically resets and closes the circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e The switch is a \"Limit Open On Rise\" type:\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpens: \u003c\/strong\u003e(shuts off the furnace) at 130°F (degrees Fahrenheit).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCloses: \u003c\/strong\u003e(resets) at 120°F.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe 0130F00038S limit switch replaces or is affiliated with the following part numbers:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e0130F00038\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eG0130F00038S\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e42AL51\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eL45-224\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e93358\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eP349572\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThis limit switch is used in many series of 80% and 90%+ AFUE furnaces across several brands. Below is a partial list of compatible series and examples:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAmana:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eACEC\u003c\/li\u003e\n\u003cli\u003eACES\u003c\/li\u003e\n\u003cli\u003eACSH\u003c\/li\u003e\n\u003cli\u003eACSS\u003c\/li\u003e\n\u003cli\u003eACVC\u003c\/li\u003e\n\u003cli\u003eACVM\u003c\/li\u003e\n\u003cli\u003eADSH\u003c\/li\u003e\n\u003cli\u003eADSS\u003c\/li\u003e\n\u003cli\u003eADVC\u003c\/li\u003e\n\u003cli\u003eAMEC\u003c\/li\u003e\n\u003cli\u003eAMEH\u003c\/li\u003e\n\u003cli\u003eAMES\u003c\/li\u003e\n\u003cli\u003eAMH\u003c\/li\u003e\n\u003cli\u003eAMS\u003c\/li\u003e\n\u003cli\u003eAMSS\u003c\/li\u003e\n\u003cli\u003eAMVC\u003c\/li\u003e\n\u003cli\u003eAMVM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGoodman:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGCEC\u003c\/li\u003e\n\u003cli\u003eGCES\u003c\/li\u003e\n\u003cli\u003eGCH\u003c\/li\u003e\n\u003cli\u003eGCSS\u003c\/li\u003e\n\u003cli\u003eGCVC\u003c\/li\u003e\n\u003cli\u003eGCVM\u003c\/li\u003e\n\u003cli\u003eGDH\u003c\/li\u003e\n\u003cli\u003eGDS\u003c\/li\u003e\n\u003cli\u003eGHS\u003c\/li\u003e\n\u003cli\u003eGME\u003c\/li\u003e\n\u003cli\u003eGMEC\u003c\/li\u003e\n\u003cli\u003eGMES\u003c\/li\u003e\n\u003cli\u003eGMH\u003c\/li\u003e\n\u003cli\u003eGMS\u003c\/li\u003e\n\u003cli\u003eGMSS\u003c\/li\u003e\n\u003cli\u003eGMVC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGMVM Series: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGCEC800403AXAA\u003c\/li\u003e\n\u003cli\u003eGCVC800805CXAA\u003c\/li\u003e\n\u003cli\u003eGMEC800403ANAA\u003c\/li\u003e\n\u003cli\u003eGMVC800805CNAA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDaikin DC, DD, DM Series: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDC80SE0403AXAA\u003c\/li\u003e\n\u003cli\u003eDM80HS0403AXAA\u003c\/li\u003e\n\u003cli\u003eDM96HS0402BNAA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis switch is generally compatible with any Goodman, Amana, Janitrol, or Daikin model requiring a primary limit switch that opens at 130°F and automatically resets.\u003c\/p\u003e","brand":"HVAC Parts and Equipment Depot","offers":[{"title":"Default Title","offer_id":52572748120427,"sku":"0130F00038","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/0130F00038S-2.jpg?v=1763486374"},{"product_id":"lennox-50l98-lb-95368a-high-limit-switch-kit-primary-safety","title":"Lennox 50L98 LB-95368A High Limit Switch Kit Primary Safety","description":"\u003ch1\u003eLennox 50L98 LB-95368A High Limit Switch Kit Primary Safety\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eLennox 50L98 Limit Kit\u003c\/strong\u003e serves as the critical \"safety brain\" for your furnace’s heat exchanger, constantly monitoring internal temperatures to prevent catastrophic overheating. This primary limit switch is a normally-closed safety device that automatically breaks the electrical circuit to the gas valve if temperatures exceed factory safety thresholds—usually due to a failed blower motor or a severely clogged air filter. Engineered specifically for \u003cstrong\u003eLennox G24, G32, and G40\u003c\/strong\u003e series furnaces, this kit ensures that your heating system fails safely rather than allowing the heat exchanger to crack or pose a fire hazard.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision OEM Part Number:\u003c\/strong\u003e A direct factory-authorized replacement for \u003cstrong\u003e50L98\u003c\/strong\u003e (LB-95368A), ensuring the temperature trip point and insertion depth match your furnace's original safety specifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Reset Technology:\u003c\/strong\u003e Features a bimetal disc that opens on temperature rise and automatically resets once the heat exchanger cools to a safe operating level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCritical Safety Monitoring:\u003c\/strong\u003e Provides 24\/7 thermal protection, acting as the final line of defense against \"rollout\" conditions and heat exchanger stress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixed \"No Heat\" Issues:\u003c\/strong\u003e Resolves common \"Primary Limit Open\" fault codes (often a 4-flash or steady light depending on the board) that prevent the burners from igniting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-Resistant Terminals:\u003c\/strong\u003e Equipped with high-conductivity 1\/4\" spade terminals designed to maintain a solid electrical connection in high-vibration environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Lennox \/ Allied Air\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Lennox Industries \/ Therm-O-Disc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart #:\u003c\/strong\u003e LB-95368A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCat #:\u003c\/strong\u003e 50L98\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC\/SKU:\u003c\/strong\u003e 662551356775 \/ 50L98\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.10 Pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 24 VAC Control Circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Temperature:\u003c\/strong\u003e Factory Set (Specific to LB-95368A Specs)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Compatible with HSI, Spark, and Standing Pilot Systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🛠️ HVAC Depot Pro Tip\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eTake a Picture First!\u003c\/strong\u003e Before removing the two mounting screws, photograph the orientation of the switch and the color of the two wires connected to it. Limit switches are \"position sensitive\" within the airflow stream; installing it upside down can lead to \"nuisance tripping\" where the furnace shuts off before the house is actually warm. \u003cstrong\u003eDiagnostic Check:\u003c\/strong\u003e If you are replacing this switch because it is \"open,\" check your air filter and indoor blower wheel first. 90% of limit switch failures are caused by restricted airflow making the switch work too hard—replacing the switch without fixing the airflow will lead to another failure within weeks.\u003c\/p\u003e\n\u003ch2\u003eCross-Reference\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperseded \/ Legacy:\u003c\/strong\u003e 50L9801, 100072-01, 100072-03\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawing Numbers:\u003c\/strong\u003e LB-95368A, 603411-01\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTherm-O-Disc Equivalent:\u003c\/strong\u003e 60T11-311545\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOther Identifiers:\u003c\/strong\u003e L150-30, L170-40 (Verify Temp Code on Face)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eModel Compatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eG24 Series\u003c\/strong\u003e (Suffixes: UH, DF)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eG32 Series\u003c\/strong\u003e (Suffixes: V, UH)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eG40 Series\u003c\/strong\u003e (Suffixes: UH, DF)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eG41 Series\u003c\/strong\u003e (Suffixes: UF)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eG51 Series\u003c\/strong\u003e (Suffixes: MPV)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eML180 Series\u003c\/strong\u003e (Suffixes: 045, 070, 090)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":52572915728747,"sku":"50L98","price":183.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/LB-95368A.jpg?v=1763487750"},{"product_id":"oem-trane-flame-rollout-switch-swt02649-opens-at-240f-manual-reset","title":"Trane SWT02649 Flame Rollout Switch | 240°F Manual Reset | Replaces 3L12-240, SRL240","description":"\u003ch1\u003eTrane SWT02649 Flame Rollout Switch | 240°F Manual Reset | Replaces 3L12-240 \u0026amp; SRL240\u003c\/h1\u003e\n\u003cp\u003eTrane SWT02649 is a flame rollout switch, a safety component for HVAC systems that manually resets and is designed to protect against overheating inside the cabinet. It's a Single Pole Single Throw (SPST) switch that opens (shuts the system off) if it detects a flame rollout, which can happen in a furnace. This specific model operates at 240°F and is compatible with various Trane and American Standard HVAC systems. This as a safety device by monitoring for flame rollout in the burner area and inside the cabinet. When a flame issues from the burner area, it triggers a safety shutdown. It has a manual reset, meaning a person must manually reset it to restart the system after the issue is fixed. It is a Single Pole Single Throw (SPST) switch that opens at 240°F and is rated for 240 volts and 25 amps. The flame rollout switch is a crucial safety component that prevents overheating and potential hazards associated with a flame rollout, protecting both the equipment and occupants.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey  Electrical Specifications:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand: \u003c\/strong\u003eTrane\/ American Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Rating: \u003c\/strong\u003e25A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles: \u003c\/strong\u003e1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight: \u003c\/strong\u003e0.186\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type: \u003c\/strong\u003eQuick Connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType: \u003c\/strong\u003eManual Reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage: \u003c\/strong\u003e208-230\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmps: \u003c\/strong\u003e25 Max\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlame Rollout MAX Temp: \u003c\/strong\u003eOpens and needs to be reset at 240F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDescription: \u003c\/strong\u003eSWITCH; FLAME ROLLOUT, 240F, OPENS ON TEMP RISE, MANUAL RESET, SPST, 25A\/240V QC TERMINAL\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eThe SWT02649 directly replaces the following Trane and American Standard part numbers: \u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSWT2649 (older version of the same part number)\u003c\/li\u003e\n\u003cli\u003eX13100426010\u003c\/li\u003e\n\u003cli\u003eX13541189-01\u003c\/li\u003e\n\u003cli\u003e389683\u003c\/li\u003e\n\u003cli\u003eService First SSWT02649\u003c\/li\u003e\n\u003cli\u003eAll Points 8110614 \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite-Rodgers:\u003c\/strong\u003e 3L12-240\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupco: \u003c\/strong\u003eSRL240:\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackard: \u003c\/strong\u003ePRL240:\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eICP \/ Heil Quaker: \u003c\/strong\u003e512532:\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNordyne\/Maytag:\u003c\/strong\u003e 626605 or 626355\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReznor: \u003c\/strong\u003e210855\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMARS: \u003c\/strong\u003e39042\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eStop Furnace Overheating with the Trane SWT02649\u003c\/h2\u003e\n\u003cp\u003eIf your package unit or furnace has completely shut down and won't respond to the thermostat, your flame rollout switch likely tripped. The SWT02649 is a Single Pole Single Throw (SPST) safety device that monitors the burner cabinet.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePro-Tip for Techs:\u003c\/strong\u003e Because this is a\u003cstrong\u003e Manual Reset\u003c\/strong\u003e switch, a trip usually indicates a serious issue like a clogged burner or a cracked heat exchanger. Do not just reset it—inspect the combustion area! This switch is the \"gold standard\" replacement for\u003cstrong\u003e Service First SSWT02649\u003c\/strong\u003e and \u003cstrong\u003eHoneywell\u003c\/strong\u003e equivalents found in major Trane and American Standard commercial and residential package units.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMost Commonly Found in the following Trane\/American Standard Package units:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGCC180A3EHA0907\u003c\/li\u003e\n\u003cli\u003eGCC180A3EHA0A07\u003c\/li\u003e\n\u003cli\u003eGCC180A3EHA0B07\u003c\/li\u003e\n\u003cli\u003eGCC180A3EHA0BC7\u003c\/li\u003e\n\u003cli\u003eGCC180A3EHA0BD7\u003c\/li\u003e\n\u003cli\u003eGCC180A3EHA0BN70B\u003c\/li\u003e\n\u003cli\u003eGCC180A3EHA0C07\u003c\/li\u003e\n\u003cli\u003eGCC180A3EHA0CC7\u003c\/li\u003e\n\u003cli\u003eGCC180A3EHA0CD7\u003c\/li\u003e\n\u003cli\u003eGCC180A3EHA0D07\u003c\/li\u003e\n\u003cli\u003eGCC180A3EHA0D09\u003c\/li\u003e\n\u003cli\u003eGCC180A3EHA0DD7\u003c\/li\u003e\n\u003cli\u003eGCC180A3ELA0907\u003c\/li\u003e\n\u003cli\u003eGCC180A3ELA0A07\u003c\/li\u003e\n\u003cli\u003eGCC180A3ELA0B07\u003c\/li\u003e\n\u003cli\u003eGCC180A3ELA0C07\u003c\/li\u003e\n\u003cli\u003eGCC180A3ELA0D07\u003c\/li\u003e\n\u003cli\u003eGCC180A3EMA0C07\u003c\/li\u003e\n\u003cli\u003eGCC180A4EHA0A07\u003c\/li\u003e\n\u003cli\u003eGCC180A4EHA0B07\u003c\/li\u003e\n\u003cli\u003eGCC180A4EHA0C07\u003c\/li\u003e\n\u003cli\u003eGCC180A4EHA0D07\u003c\/li\u003e\n\u003cli\u003eGCC180A4ELA0A07\u003c\/li\u003e\n\u003cli\u003eGCC180A4ELA0B07\u003c\/li\u003e\n\u003cli\u003eGCC180A4ELA0C07\u003c\/li\u003e\n\u003cli\u003eGCC180A4ELA0D07\u003c\/li\u003e\n\u003cli\u003eGCC180A4EMA0C07\u003c\/li\u003e\n\u003cli\u003eGCC180AWEHA0A07\u003c\/li\u003e\n\u003cli\u003eGCC180AWEHA0B07\u003c\/li\u003e\n\u003cli\u003eGCC180AWEHA0BD7\u003c\/li\u003e\n\u003cli\u003eGCC180AWEHA0C07\u003c\/li\u003e\n\u003cli\u003eGCC180AWEHA0DC7\u003c\/li\u003e\n\u003cli\u003eGCC180AWEHA0DD7\u003c\/li\u003e\n\u003cli\u003eGCC210A3EHA0A07\u003c\/li\u003e\n\u003cli\u003eGCC210A3EHA0B07\u003c\/li\u003e\n\u003cli\u003eGCC210A3EHA0D07\u003c\/li\u003e\n\u003cli\u003eGCC210A3ELA0907\u003c\/li\u003e\n\u003cli\u003eGCC210A3ELA0A07\u003c\/li\u003e\n\u003cli\u003eGCC210A3ELA0B07\u003c\/li\u003e\n\u003cli\u003eGCC210A3ELA0C07\u003c\/li\u003e\n\u003cli\u003eGCC210A3ELA0D07\u003c\/li\u003e\n\u003cli\u003eGCC210A3EMA0A07\u003c\/li\u003e\n\u003cli\u003eGCC210A4EHA0A07\u003c\/li\u003e\n\u003cli\u003eGCC210A4EHA0D07\u003c\/li\u003e\n\u003cli\u003eGCC210A4ELA0A07\u003c\/li\u003e\n\u003cli\u003eGCC210A4ELA0B07\u003c\/li\u003e\n\u003cli\u003eGCC210A4ELA0D07\u003c\/li\u003e\n\u003cli\u003eGCC210AWEHA0D07\u003c\/li\u003e\n\u003cli\u003eGCC210AWELA0C07\u003c\/li\u003e\n\u003cli\u003eGCC210AWELA0D07\u003c\/li\u003e\n\u003cli\u003eGCC240A3EHA0A07\u003c\/li\u003e\n\u003cli\u003eGCC240A3EHA0B07\u003c\/li\u003e\n\u003cli\u003eGCC240A3EHA0BD7\u003c\/li\u003e\n\u003cli\u003eGCC240A3EHA0C07\u003c\/li\u003e\n\u003cli\u003eGCC240A3EHA0C09\u003c\/li\u003e\n\u003cli\u003eGCC240A3EHA0D07\u003c\/li\u003e\n\u003cli\u003eGCC240A3ELA0A07\u003c\/li\u003e\n\u003cli\u003eGCC240A3ELA0B07\u003c\/li\u003e\n\u003cli\u003eGCC240A3ELA0C07\u003c\/li\u003e\n\u003cli\u003eGCC240A3ELA0D07\u003c\/li\u003e\n\u003cli\u003eGCC240A3EMA0D07\u003c\/li\u003e\n\u003cli\u003eGCC240A4EHA0907\u003c\/li\u003e\n\u003cli\u003eGCC240A4EHA0A07\u003c\/li\u003e\n\u003cli\u003eGCC240A4EHA0AJ7\u003c\/li\u003e\n\u003cli\u003eGCC240A4EHA0B07\u003c\/li\u003e\n\u003cli\u003eGCC240A4EHA0C07\u003c\/li\u003e\n\u003cli\u003eGCC240A4EHA0CD7\u003c\/li\u003e\n\u003cli\u003eGCC240A4EHA0D07\u003c\/li\u003e\n\u003cli\u003eGCC240A4EHA0D09\u003c\/li\u003e\n\u003cli\u003eGCC240A4ELA0907\u003c\/li\u003e\n\u003cli\u003eGCC240A4ELA0A07\u003c\/li\u003e\n\u003cli\u003eGCC240A4ELA0AD7\u003c\/li\u003e\n\u003cli\u003eGCC240A4ELA0B07\u003c\/li\u003e\n\u003cli\u003eGCC240A4ELA0C07\u003c\/li\u003e\n\u003cli\u003eGCC240A4ELA0D07\u003c\/li\u003e\n\u003cli\u003eGCC240A4ELA0D09\u003c\/li\u003e\n\u003cli\u003eGCC240AWEHA0A07\u003c\/li\u003e\n\u003cli\u003eGCC240AWEHA0BD7\u003c\/li\u003e\n\u003cli\u003eGCC240AWEHA0D07\u003c\/li\u003e\n\u003cli\u003eGCC240AWEHA0DC7\u003c\/li\u003e\n\u003cli\u003eGCC240AWELA0D07\u003c\/li\u003e\n\u003cli\u003eGCC300A3EHA0B07\u003c\/li\u003e\n\u003cli\u003eGCC300A3EHA0C07\u003c\/li\u003e\n\u003cli\u003eGCC300A3EHA0D07\u003c\/li\u003e\n\u003cli\u003eGCC300A3EHA0D09\u003c\/li\u003e\n\u003cli\u003eGCC300A3ELA0B07\u003c\/li\u003e\n\u003cli\u003eGCC300A3ELA0BD7\u003c\/li\u003e\n\u003cli\u003eGCC300A3ELA0C07\u003c\/li\u003e\n\u003cli\u003eGCC300A3ELA0D07\u003c\/li\u003e\n\u003cli\u003eGCC300A3EMA0BC7\u003c\/li\u003e\n\u003cli\u003eGCC300A3EMA0D07\u003c\/li\u003e\n\u003cli\u003eGCC300A4EHA0B07\u003c\/li\u003e\n\u003cli\u003eGCC300A4EHA0D07\u003c\/li\u003e\n\u003cli\u003eGCC300A4EHA0D09\u003c\/li\u003e\n\u003cli\u003eGCC300A4ELA0B07\u003c\/li\u003e\n\u003cli\u003eGCC300A4ELA0D07\u003c\/li\u003e\n\u003cli\u003eGCC300A4ELA0D09\u003c\/li\u003e\n\u003cli\u003eGCC300AWEHA0907\u003c\/li\u003e\n\u003cli\u003eGCC300AWEHA0A07\u003c\/li\u003e\n\u003cli\u003eGCC300AWEHA0C07\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Trane \/ American Standard","offers":[{"title":"Default Title","offer_id":52576829145451,"sku":"SWT02649","price":68.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/SWT02649-1.jpg?v=1765310798"},{"product_id":"swt01280-trane-thermal-limit-switch-cut-out-155-f-direct-replacement","title":"SWT01280 Trane Thermal Limit Switch CUT OUT 155°F Direct Replacement","description":"\u003ch1\u003e\u003cstrong\u003eTrane \/ American Standard SWT01280 Genuine OEM Furnace Limit Switch (155°F \/ L155-30F Rating)\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Trane \/ American Standard \u003cstrong\u003eSWT01280\u003c\/strong\u003e is a \u003cstrong\u003ehigh-limit thermal safety device\u003c\/strong\u003e engineered for HVAC furnaces and other heating equipment. This is a Genuine OEM part designed to prevent system overheating by functioning as a critical safety shut-off. The switch continuously monitors the heat exchanger temperature and is precisely calibrated to \"\u003cstrong\u003eopen\u003c\/strong\u003e\" the electrical circuit at \u003cstrong\u003e155°F\u003c\/strong\u003e. This action cuts power to the heating element (gas valve) to prevent damage. Once the temperature decreases to \u003cstrong\u003e125°F\u003c\/strong\u003e, the switch automatically \u003cstrong\u003e\"closes\"\u003c\/strong\u003e the circuit, allowing the system to operate normally and safely.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Thermal Safety:\u003c\/strong\u003e Calibrated to \"Open\" the circuit at 155°F, providing immediate shutdown to protect critical furnace components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Reset:\u003c\/strong\u003e The switch automatically \"Closes\" at 125°F, allowing the heating system to restart automatically once safe temperatures are restored (30°F differential).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Amperage Rating:\u003c\/strong\u003e Rated for robust electrical loads (5.8 FLA @ 120V AC), ensuring reliability in various residential and light commercial applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Component:\u003c\/strong\u003e Ensures exact fitment and adherence to strict Trane and American Standard safety and performance specifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details \u0026amp; Specification\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Trane \/ American Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e SWT01280\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDescription: \u003c\/strong\u003e Thermal Limit Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Temperature (Cut Out):\u003c\/strong\u003e 155°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClose Temperature (Cut In):\u003c\/strong\u003e 125°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length:\u003c\/strong\u003e Surface\/Board Mount Design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Rating: \u003c\/strong\u003e 5.8 FLA \/ 34.8 LRA @ 120V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Quick Connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight: \u003c\/strong\u003e 1.5 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA limit switch with an L155-30F rating is a standard high-limit for many 80% and 90%+ efficiency furnaces. If this switch is consistently tripping, the most probable cause is insufficient airflow. Check for an excessively dirty air filter, blocked return air ducts, or a faulty blower motor capacitor that is preventing the fan from running at the correct speed. Do not attempt to bypass this switch; it is a critical safety device designed to prevent a potential fire hazard.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eSuperseded Part: \u003c\/strong\u003e\u003c\/h3\u003e\nSWT01280, SWT1280 (older, shortened version)\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eLegacy \/ Manufacturing Numbers: \u003c\/strong\u003e\u003c\/h3\u003e\nC340056P18, X13540649180, 270159795307\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eRating ID: \u003c\/strong\u003e\u003c\/h3\u003e\nL155-30F (engineering number indicating a 155°F limit switch with a 30°F differential).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eModel Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis limit switch is compatible with various Trane and American Standard high-efficiency furnaces and packaged units. \u003cstrong\u003eBelow are common compatible model prefixes; always verify the exact fit with your unit's data plate.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTrane Models:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTDD\u003c\/strong\u003e: TDD080C945A2, TDD080R9V3A1, TDD120C960C4, TDD1B080A9451BA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTDE\u003c\/strong\u003e: TDE080A945B0, TDE120A960K1, TDE1B080A9451AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTUD\u003c\/strong\u003e: TUD120C960J0, TUD1D120A9601AB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCDB\u003c\/strong\u003e\/CDE: CDB080A945A0, CDB1B080A9451AB, CDE120A960C1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOther\u003c\/strong\u003e: FCAB080A40A0 (Downflow), FCAD120A50E0\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eAmerican Standard Models:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eADD\u003c\/strong\u003e: ADD080C945A2, ADD080R9V3B0, ADD120C960B1, ADD1B080A9451AA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADE\u003c\/strong\u003e: ADE1B060A9361AA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAUD\u003c\/strong\u003e: AUD120C960J1, AUD1D120A9601BA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Trane \/ American Standard","offers":[{"title":"Default Title","offer_id":52580461281643,"sku":"SWT01280","price":73.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/SWT01273-3_7f07fa67-9fd9-4383-b238-3c1a72acd2d9.jpg?v=1764100520"},{"product_id":"limit-switch-swt01274-opens-125-close-95-trane-oem-replacement","title":"Limit Switch SWT01274, Opens @ 125 Close@ 95 Trane OEM Replacement","description":"\u003ch1\u003e\u003cstrong\u003eTrane \/ American Standard SWT01274 Genuine OEM Furnace Limit Switch (125°F \/ 3\" Insert)\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Trane \/ American Standard \u003cstrong\u003eSWT01274\u003c\/strong\u003e is an original equipment manufacturer (OEM) safety component designed to prevent furnace overheating. This thermal limit switch is specifically calibrated to monitor the internal temperature of the plenum. It acts as a critical safety shut-off, designed to \u003cstrong\u003eopen\u003c\/strong\u003e the electrical circuit at \u003cstrong\u003e125°F\u003c\/strong\u003e, which safely shuts down the heating unit. Once the switch \u003cstrong\u003ecools down to 95°\u003c\/strong\u003eF, it automatically closes the circuit, allowing the furnace to resume normal operation. This switch ensures the furnace remains within safe thermal parameters, protecting vital components like the heat exchanger.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-Temperature Safety Limit:\u003c\/strong\u003e Calibrated to \"Open\" at 125°F, providing immediate shutdown in specific commercial or packaged units that operate at lower airflow temperatures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Reset Function: \u003c\/strong\u003eThe switch \"Closes\" the circuit at 95°F, ensuring the system can automatically recover after a temporary overheat condition is resolved.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Electrical Rating:\u003c\/strong\u003e Handles substantial electrical loads (5.8 FLA @ 120V AC), compatible with a wide range of residential and commercial units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Reliability:\u003c\/strong\u003e This is an authentic Trane\/American Standard part, built to precise factory standards, ensuring perfect fitment and safety compliance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details Specification\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Trane \/ American Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e SWT01274\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDescription: \u003c\/strong\u003e Thermal Limit Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Temperature (Cut Out): \u003c\/strong\u003e 125°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClose Temperature (Cut In): \u003c\/strong\u003e 95°F (30°F Differential)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length:\u003c\/strong\u003e Surface\/Board Mount (Typically 3\" overall size, not probe)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Rating: \u003c\/strong\u003e 5.8 FLA \/ 34.8 LRA @ 120V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Quick Connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight: \u003c\/strong\u003e 1.5 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA limit switch with a 125°F set point is usually a secondary or auxiliary limit in high-BTU downflow furnaces or specific packaged commercial units. It's often monitoring a different zone than the main limit. If this limit trips, ensure the ductwork configuration matches the manufacturer's specification (e.g., minimum duct length or required elbows). Low-temperature tripping often points to excessive airflow, which is rare, or more likely a misapplication of the limit switch location or a non-OEM replacement issue.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eSuperseded Part: \u003c\/strong\u003e\u003c\/h3\u003e\nSWT01274, SWT1274, 389649, 349020\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eLegacy \/ Manufacturing Numbers: \u003c\/strong\u003e\u003c\/h3\u003e\nC340056P12, X13540649120, 270159794707\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eRating ID:\u003c\/strong\u003e\u003c\/h3\u003e\nL125-30F (Indicating 125°F trip and 30°F differential).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eModel Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThis limit switch is compatible with various Trane and American Standard high-efficiency furnaces and packaged units. Below are common compatible model prefixes; always verify the exact fit with your unit's data plate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTrane Models:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTDD\u003c\/strong\u003e: TDD120R9V5A1, TDD120R9V5B0, TDD140C960A0, TDD140C960C1, TDD2C100ACV52AB, TDD2D120A9V5VAA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTUD\u003c\/strong\u003e: TUD1C080A9H41AA, TUD1C080A9H41BA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eAmerican Standard Models:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eADD\u003c\/strong\u003e: ADD120R9V5A1, ADD120R9V5C4, ADD140C960A1, ADD140R960C0, ADD2C100ACV52AC, ADD2D120A9V5VAB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAUD\u003c\/strong\u003e: AUD1C080A9H41BA, AUD1C080G9H41AA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCommercial Packaged Units:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4YCC\/4YCY\/4YCZ: \u003c\/strong\u003e4YCC4042A1090AA, 4YCC4060E1115AA, 4YCY5036A1090AD, 4YCZ5036E1090AA, 4YCZ6036C1090AB\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Trane \/ American Standard","offers":[{"title":"Default Title","offer_id":52580488773995,"sku":"SWT01274","price":83.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/SWT01274.jpg?v=1764095929"},{"product_id":"swt01273-trane-oem-replacement-furnace-high-limit-switch-220-f-open","title":"SWT01273 Trane OEM Replacement Furnace High Limit Switch 220°F Open","description":"\u003ch1\u003e\u003cstrong\u003eTrane \/ American Standard SWT01273 Genuine OEM Furnace Limit Switch (220°F \/ 3\" Insert)\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Trane \/ American Standard \u003cstrong\u003eSWT01273\u003c\/strong\u003e is a \u003cstrong\u003ehigh-limit safety switch\u003c\/strong\u003e designed for use in heavy-duty HVAC furnaces and commercial units. As a Genuine \u003cstrong\u003eOEM\u003c\/strong\u003e component, it acts as a crucial safety shut-off mechanism that protects the system from overheating. This switch monitors operational temperatures and is calibrated to instantly break the electrical circuit to the gas valve if temperatures exceed \u003cstrong\u003e220°F\u003c\/strong\u003e. This action prevents heat exchanger damage and potential fire hazards. The \u003cstrong\u003e3-inch probe\u003c\/strong\u003e ensures accurate sensing within the plenum of high-BTU equipment. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtreme Temperature Protection:\u003c\/strong\u003e Engineered to safely \"Open\" the circuit at 220°F, providing essential protection for the furnace heat exchanger.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Reset Function:\u003c\/strong\u003e The switch automatically \"Closes\" and allows the heating operation to restart once the internal temperature decreases to 190°F.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable OEM Construction:\u003c\/strong\u003e Built to rigorous Trane and American Standard specifications with a robust 5.8 FLA current rating at 120V AC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep-Reach 3\" Probe:\u003c\/strong\u003e Features a 3-inch insertion length for accurate, board- or surface-mounted temperature monitoring. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details Specification\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Trane \/ American Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e SWT01273\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDescription: \u003c\/strong\u003e Thermal Limit Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Temperature (Cut Out):\u003c\/strong\u003e 220°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClose Temperature (Cut In):\u003c\/strong\u003e 190°F (30°F Differential)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length:\u003c\/strong\u003e 3.0 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Rating:\u003c\/strong\u003e 5.8 FLA \/ 34.8 LRA @ 120V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Quick Connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 1.50 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResettable: \u003c\/strong\u003e Automatically resets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA limit switch operating at such a high range (L220-30F) is typically found in older or specific commercial-grade units where internal temperatures naturally run hotter. If your SWT01273 is tripping frequently, ensure there are no physical obstructions blocking the airflow immediately downstream of the heat exchanger, such as closed dampers or crushed ductwork. High static pressure is the most common cause of this high-limit tripping\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eSuperseded Part:\u003c\/strong\u003e\u003c\/h3\u003e\nSWT01273, SWT1273\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eLegacy \/ Manufacturing Numbers:\u003c\/strong\u003e\u003c\/h3\u003e\nC340056P10, X13540649100, 270159845007\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eDrawing Number:\u003c\/strong\u003e\u003c\/h3\u003e\nX13541189-01\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eRating ID: \u003c\/strong\u003e\u003c\/h3\u003e\nL220-30F (Indicating 220°F trip and 30°F differential). \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eModel Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis limit switch is compatible with various Trane and American Standard high-efficiency furnaces and packaged units. \u003cstrong\u003eBelow are common compatible model prefixes; always verify the exact fit with your unit's data plate. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eTrane Models:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTUD\u003c\/strong\u003e: TUD060C936K1, TUD080C924B1, TUD1A060A9361AA, TUD1B080A9241AA, TUD2A060A9362AA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTUE\u003c\/strong\u003e: TUE060A936L1, TUE1A060A9361AA, TUE1A060A9361AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTDD\u003c\/strong\u003e: Check data plate for specific TDD models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCUB\u003c\/strong\u003e: CUB060A936C3, CUB1A060A9361AA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eAmerican Standard Models:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAUD\u003c\/strong\u003e: AUD060C936K1, AUD080C924B1, AUD080R936K5, AUD1A060A9361AA, AUD1B080A9241BA, AUD2A060A9362AB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAUE\u003c\/strong\u003e: AUE1A060A9361AA, AUE1A060A9361AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADD\u003c\/strong\u003e: Check data plate for specific ADD models. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eAmeristar \/ RunTru Models:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eM801P060AU36AAA, M801P060AU36AAB\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Trane \/ American Standard","offers":[{"title":"Default Title","offer_id":52580508926315,"sku":"SWT01273","price":73.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/SWT01273-1.jpg?v=1764095804"},{"product_id":"swt01277trane-oem-replacement-limit-switch-open-at-145-f-close-at-115-f","title":"SWT01277 Trane OEM Replacement Limit Switch Open at 145°F, Close at 115°F","description":"\u003ch1\u003e\u003cstrong\u003eTrane \/ American Standard SWT01277 Genuine OEM Furnace Limit Switch (145°F \/ 3\" Insert)\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Trane \/ American Standard \u003cstrong\u003eSWT01277\u003c\/strong\u003e is an official Genuine \u003cstrong\u003eOEM thermal limit switch \u003c\/strong\u003edesigned for vital safety functions within HVAC equipment. This safety device constantly monitors internal system temperatures. The switch functions by \u003cstrong\u003eopening \u003c\/strong\u003ethe electrical circuit at \u003cstrong\u003e145\u003c\/strong\u003e°F and \u003cstrong\u003eclosing \u003c\/strong\u003eit at \u003cstrong\u003e115\u003c\/strong\u003e°F, acting as a rapid safety shut-off for the equipment if the temperature exceeds the set limit. It is a robust 3-inch insertion limit switch commonly found in various Trane and American Standard furnaces and packaged units.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Thermal Operation:\u003c\/strong\u003e Calibrated to safely \"Open\" the electrical circuit at 145°F, immediately cutting power to the gas valve during an overheat event.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic System Reset:\u003c\/strong\u003e The switch automatically \"Closes\" at 115°F, allowing the system to resume normal operation once safe temperatures are restored.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimal Sensing Depth: \u003c\/strong\u003eFeatures a 3-inch insertion size (probe length), ensuring the sensor reaches the critical airflow stream for accurate temperature monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Reliability \u0026amp; Safety: \u003c\/strong\u003eManufactured to rigorous Trane\/American Standard specifications, handling electrical loads up to 5.8 FLA at 120V AC with quick connect terminals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details \u0026amp; Specification\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Trane \/ American Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e SWT01277\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDescription\u003c\/strong\u003e: Thermal Limit Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Temperature:\u003c\/strong\u003e 145°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClose Temperature:\u003c\/strong\u003e 115°F (30°F Differential)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length: \u003c\/strong\u003e 3.0 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Rating:\u003c\/strong\u003e 5.8 FLA \/ 34.8 LRA @ 120V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Quick Connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 1.5 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA lower temperature trip point like 145°F is typical for smaller-BTU or packaged rooftop units (RTUs) which have different internal airflow dynamics than standard upflow furnaces. If this limit switch consistently trips, do not bypass it. Instead, check the evaporator coil for being frozen solid, a severely blocked intake vent, or a weak blower capacitor, as these restrict necessary airflow.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eSuperseded Part: \u003c\/strong\u003e\u003c\/h3\u003e\nSWT01277, SWT1277\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eLegacy \/ Manufacturing Numbers: \u003c\/strong\u003e\u003c\/h3\u003e\nC340056P15, X13540649150, 270159795007, X13541189-01\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eRating ID: \u003c\/strong\u003e\u003c\/h3\u003e\nL145-30F (Indicates 145°F trip and 30°F differential).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote: L180-30F may appear on drawing lists but the active part is L145-30F.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eModel Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis limit switch is compatible with various Trane and American Standard high-efficiency furnaces and packaged units.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eBelow are common compatible model prefixes; always verify the exact fit with your unit's data plate.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTrane \u0026amp; American Standard Packaged\/Furnace Models (GBC Series):\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGBC036 Series:\u003c\/strong\u003e GBC036A3ELA, GBC036A3ELB01, GBC036A3ELB020, GBC036A3ELB03A, GBC036A4ELA, GBC036A4ELB04A1, GBC036A4ELB08C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGBC048 Series:\u003c\/strong\u003e GBC048A3ELA, GBC048A3ELB02, GBC048A3ELB04, GBC048A4ELA0, GBC048A4ELB030, GBC048A4ELB07B000A1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGBC060 Series:\u003c\/strong\u003e GBC060A3ELA, GBC060A3ELB01C0, GBC060A3ELB02C004, GBC060A4ELA, GBC060A4ELB03A, GBC060A4ELB09C100A1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Trane \/ American Standard","offers":[{"title":"Default Title","offer_id":52580521902443,"sku":"SWT01277","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/SWT01277.jpg?v=1764095489"},{"product_id":"trane-american-standard-swt01275-thermal-limit-switch-135-f","title":"Trane \/ American Standard SWT01275 Thermal Limit Switch - 135°F","description":"\u003ch1\u003e\u003cstrong\u003eTrane \/ American Standard SWT01275 Thermal Limit Switch - 135°F Open \/ 105°F Close (3\" Insert) \u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003eThe Trane and American Standard SWT01275 is a genuine OEM high-temperature thermal limit switch designed as a critical safety component for residential and light commercial gas furnaces. This automatic-reset switch monitors the internal temperature of the heat exchanger or blower compartment, providing a \"Normally Closed\" (N\/C) circuit that breaks upon reaching its 135°F threshold. This safety interlock prevents system overheating and potential damage by interrupting the ignition sequence or blower operation if temperatures exceed factory-safe limits. \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Reset Safety: \u003c\/strong\u003eDesigned to automatically reset the circuit once temperatures drop below the closing threshold (105°F), restoring normal system operation without manual intervention.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Calibration:\u003c\/strong\u003e Factory-set to open at 135°F and close at 105°F (L135-30F rating), ensuring accurate thermal protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Fit \u0026amp; Finish: \u003c\/strong\u003eFeatures a standard 3-inch insert length for precise placement within the airflow path of Trane and American Standard units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Life Cycle: \u003c\/strong\u003eRated for up to 100,000 switching cycles, providing long-term reliability in demanding HVAC environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSPST Configuration: \u003c\/strong\u003eSingle-Pole, Single-Throw (SPST) normally closed logic for seamless integration with modern furnace control boards. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details \u0026amp; Specification\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Thermal Limit Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand: \u003c\/strong\u003e Trane \/ American Standard (Therm-O-Disc)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpening Temp: \u003c\/strong\u003e 135°F (Open on Temperature Rise)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosing Temp: \u003c\/strong\u003e 105°F (Close on Temperature Drop)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircuit: \u003c\/strong\u003e Normally Closed (N\/C), SPST\u003c\/li\u003e\n\u003cli\u003eI\u003cstrong\u003ensert Length: \u003c\/strong\u003e 3 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage\/Current: \u003c\/strong\u003e 120V AC (5.8 FLA \/ 34.8 LRA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type: \u003c\/strong\u003e 1\/4\" Quick Connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Automatic\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA tripped SWT01275 limit switch is almost always a symptom of a larger airflow issue rather than a faulty part. Before replacing, check for a dirty air filter, blocked return grilles, or a failing blower motor. If the switch \"pops\" frequently, it can weaken over time; however, replacing it without fixing the underlying airflow restriction will likely result in the new part tripping immediately.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eSuperseded Part:\u003c\/strong\u003e\u003c\/h3\u003e\nThere are no older Trane part numbers for this specific switch, though it is often searched as SWT1275.\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eLegacy \/ Manufacturing Numbers: \u003c\/strong\u003e\u003c\/h3\u003e\nC340056P13, 36T01B3, 42283, A1730, P13\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eRating ID:\u003c\/strong\u003e\u003c\/h3\u003e\nL135-30F (indicating 135°F trip and 30°F differential). \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eModel Compatibility \u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis limit switch is compatible with various Trane and American Standard high-efficiency furnaces and packaged units. Below are common compatible model prefixes; always verify the exact fit with your unit's data plate.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTrane Models:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eADD Models:\u003c\/strong\u003e ADD060C936F0, ADD100R9V5F1, ADD100R9V5F2, ADD100R9V5F3, ADD1D120A9H51BA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCDB Models\u003c\/strong\u003e: CDB060A936D0, CDB060A936D1, CDB060A936D3, CDB1A060A9361AA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADE Models: \u003c\/strong\u003eADE1A060A9361AA, ADE1A060A9361AB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4YCC\/4YCY Models:\u003c\/strong\u003e 4YCC4036A1090AA, 4YCY4048C1115AA, 4YCZ6048C1115AA \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eAmerican Standard Models:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eADC Models\u003c\/strong\u003e: ADC060C936C1, ADC100C960A1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAUD Models\u003c\/strong\u003e: AUD2B080ACV32AA, AUD2D120B9V5VAA, AUD2D120H9V5VAA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADD Models\u003c\/strong\u003e: ADD1A060A9361AA, ADD1A060A9361AB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFCAC Models: \u003c\/strong\u003eFCAC100A50A0, FCAC100A50D1 \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Trane \/ American Standard","offers":[{"title":"Default Title","offer_id":52582810124651,"sku":"SWT01275","price":50.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/SWT01275.jpg?v=1764094519"},{"product_id":"trane-oem-replacement-swt01263-limit-switch-opens-210f-closes-180f","title":"Trane OEM Replacement SWT01263 Limit Switch Opens-210F,Closes-180F","description":"\u003ch1\u003e\u003cstrong\u003eTrane \/ American Standard SWT01263 Genuine OEM Furnace Limit Switch (210°F \/ 3\" Insert)\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003eThe Trane \/ American Standard \u003cstrong\u003eSWT01263\u003c\/strong\u003e is a \u003cstrong\u003ehigh-limit thermal\u003c\/strong\u003e safety switch engineered to protect your HVAC equipment from severe overheating. As a Genuine\u003cstrong\u003e OEM\u003c\/strong\u003e component, this switch acts as a critical fail-safe by monitoring the internal plenum temperature. If the temperature reaches the factory-set threshold of \u003cstrong\u003e210°F\u003c\/strong\u003e, the switch immediately opens the electrical circuit to shut down the heating process, preventing potential damage to the heat exchanger and ensuring house-wide safety. Designed for board or surface mounting, its\u003cstrong\u003e 3-inch probe\u003c\/strong\u003e provides deep-reach thermal sensing for high-capacity furnace models.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCritical Overheat Protection:\u003c\/strong\u003e Calibrated to \"Open\" at 210°F, providing a high-limit safety ceiling for specific high-output gas furnaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Auto-Reset:\u003c\/strong\u003e The switch automatically \"Closes\" at 180°F to allow the system to resume operation once safe thermal levels are restored.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-Inch Deep Sensing:\u003c\/strong\u003e The extended 3\" insertion length ensures the sensor is properly positioned in the airflow stream for the most accurate temperature detection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Build Quality:\u003c\/strong\u003e Rated for 5.8 FLA at 120V, this switch is built to handle the electrical demands of residential and light commercial Trane and American Standard units.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details \u0026amp; Specification\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Trane \/ American Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e SWT01263\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDescription:\u003c\/strong\u003e Thermal Limit Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Temperature\u003c\/strong\u003e: 210°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClose Temperature:\u003c\/strong\u003e 180°F (30°F Differential)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length:\u003c\/strong\u003e 3.0 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Rating:\u003c\/strong\u003e 5.8 FLA \/ 34.8 LRA @ 120V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Quick Connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight: \u003c\/strong\u003e1.5 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA limit switch with a 210°F trip point is often found in units with higher BTU ratings or specific downflow configurations. If this switch trips, it is vital to inspect your blower wheel for dust accumulation and ensure your secondary heat exchanger isn't restricted. Constant \"limit tripping\" at these high temperatures can lead to metal fatigue in your heat exchanger. Always verify that the limit you are replacing matches the temperature stamped on the side of the original part.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eSuperseded Part:\u003c\/strong\u003e\u003c\/h3\u003e\nSWT01263, SWT1263\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eLegacy \/ Manufacturing Numbers: \u003c\/strong\u003e\u003c\/h3\u003e\nC340056P09, X13540649090, 270159672807\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eRating ID: \u003c\/strong\u003e\u003c\/h3\u003e\nL210-30F (Indicates 210°F trip and 30°F differential).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eModel Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis limit switch is compatible with various Trane and American Standard high-efficiency furnaces and packaged units. Below are common compatible model prefixes; always verify the exact fit with your unit's data plate.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTrane Models:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTDD\u003c\/strong\u003e: TDD060C924C3, TDD060C924D0, TDD060C924E0, TDD1A060A9241AA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTUD\u003c\/strong\u003e: TUD080C948A0, TUD080R948A0, TUD100C945H3, TUD100C960A0, TUD1B080A9481BA, TUD2D100A9602AB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTUE\u003c\/strong\u003e: TUE080A948A1, TUE080A948B0, TUE1B080A9481AA, TUE1B080A9481AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCUB\u003c\/strong\u003e\/CUE: CUB080A948A0, CUB1B080A9481AA, CUE080A948H1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOther\u003c\/strong\u003e: TUJ080A948A0, FUAB100A40A0, FUAB100A40B0, FUAB100A40E0\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eAmerican Standard Models:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eADD\u003c\/strong\u003e: ADD060C924C3, ADD060C924E0, ADD060C924F0, ADD060C924F1, ADD1A060A9241BA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAUD\u003c\/strong\u003e: AUD080C948A1, AUD080R948A2, AUD100C945H1, AUD100C960A1, AUD100R961H5, AUD2D100A9602AB\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRunTru Models:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eM801P060AD24AAB, M801P060AD36AAB, M801P080BU48AAC\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Trane \/ American Standard","offers":[{"title":"Default Title","offer_id":52582946603371,"sku":"SWT01263","price":73.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/SWT01263.jpg?v=1764023332"},{"product_id":"trane-oem-replacement-swt01259-limit-switch-opens-190-f-closes-160f","title":"Trane OEM Replacement SWT01259 Limit Switch Opens-190-F,Closes-160F","description":"\u003ch2\u003e\u003cstrong\u003eTrane \/ American Standard SWT01259 Genuine OEM Furnace Limit Switch (190°F \/ 3\" Insert)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e      The Trane \/ American Standard \u003cstrong\u003eSWT01259\u003c\/strong\u003e is a high-temperature primary safety limit designed for heavy-duty \u003cstrong\u003egas furnace\u003c\/strong\u003e applications. As a Genuine\u003cstrong\u003e OEM component\u003c\/strong\u003e, it serves as the critical \"fail-safe\" for your heating system. Calibrated to monitor the heat exchanger's internal plenum temperature, this switch is engineered to \"open\" the circuit at 190°F, immediately shutting off the \u003cstrong\u003egas valve\u003c\/strong\u003e if the system begins to overheat. This prevents structural damage to the heat exchanger and ensures the furnace remains within manufacturer-specified safety parameters. Its extended 3-inch probe allows for precise temperature detection deep within the airflow.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Threshold Thermal Protection: \u003c\/strong\u003eSafely \"Opens\" at 190°F to protect the furnace from catastrophic heat damage due to airflow failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Reset Technology: \u003c\/strong\u003eDesigned to automatically \"Close\" and restore power to the gas valve once the temperature cools to 160°F (30°F differential).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDeep-Reach 3\" Probe:\u003c\/strong\u003e The 3-inch insert length ensures the sensing element is positioned accurately in the hottest part of the plenum for high-BTU units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Performance Standard:\u003c\/strong\u003e Built to exact factory specifications for Trane and American Standard, maintaining the original UL\/CSA safety certification of the furnace.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details \u0026amp; Specification\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand: \u003c\/strong\u003e Trane \/ American Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e SWT01259\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent Type:\u003c\/strong\u003e Primary Limit Switch (L190-30)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Temperature:\u003c\/strong\u003e 190°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClose Temperature: \u003c\/strong\u003e 160°F (30°F Differential)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length:\u003c\/strong\u003e 3.0 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical (FLA):\u003c\/strong\u003e 5.8 Amps @ 120V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical (LRA):\u003c\/strong\u003e 34.8 Amps @ 120V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Quick Connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 1.5 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA limit switch tripping at 190°F is a serious warning sign. While the switch itself may fail over time, it often \"pops\" because of a significant airflow restriction. Before installing your new SWT01259, check for a dirty secondary heat exchanger or a failing capacitor on the blower motor. If the internal temperature regularly hits 190°F, it can cause the heat exchanger to crack, which is a major safety hazard. Always test for gas leaks around the manifold after any service.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSupersedes \/ Legacy \/ Drawing Numbers:\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eSWT1259 (Current shorthand)\u003c\/li\u003e\n\u003cli\u003eL190-30F (Thermal Specification)\u003c\/li\u003e\n\u003cli\u003eC340056P04 (Factory Drawing #)\u003c\/li\u003e\n\u003cli\u003eX13540649040\u003c\/li\u003e\n\u003cli\u003e270159672407\u003c\/li\u003e\n\u003cli\u003eA2143\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eModel Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis limit switch is compatible with various Trane and American Standard high-efficiency furnaces and packaged units. Below are common compatible model prefixes; always verify the exact fit with your unit's data plate. \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTrane Models:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTDC \u003c\/strong\u003e(TDC100, TDC120 series)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTDD \u003c\/strong\u003e(TDD040C924F1, TDD040C924F2, TDD040C924C4)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTUC \u003c\/strong\u003e(TUC080C942B3, TUC100C948B6)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTUD \u003c\/strong\u003e(TUD040, TUD060, TUD080, TUD100, TUD120)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTUE \u003c\/strong\u003e(TUE1B080, TUE1C100, TUE080A936L2)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eAmerican Standard Models:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eADC \u003c\/strong\u003e(ADC120C960B4, ADC080C942B8)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADD \u003c\/strong\u003e(ADD100, ADD120 series)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAUC \u003c\/strong\u003e(AUC120C960B4, AUC080C942B7)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAUD \u003c\/strong\u003e(AUD040, AUD060, AUD080, AUD100, AUD120)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAUE \u003c\/strong\u003e(AUE1B080, AUE1C100 series)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Trane \/ American Standard","offers":[{"title":"Default Title","offer_id":52582988349803,"sku":"SWT01259","price":39.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/SWT01259.jpg?v=1764022977"},{"product_id":"trane-limit-switch-swt3031-oem-replacement-open-190f-close-160f","title":"Trane Limit Switch SWT3031, OEM Replacement, Open-190F, Close-160F","description":"\u003ch1\u003e\u003cstrong\u003eTrane SWT03031 High Limit Thermal Switch – Genuine OEM (190°F \/ 160°F)\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003eThe Trane \u003cstrong\u003eSWT03031\u003c\/strong\u003e is a critical thermal safety limit switch designed for Trane and American Standard HVAC systems. Its primary job is to protect your home and equipment by monitoring the furnace temperature. If the system reaches a dangerous \u003cstrong\u003e190°F\u003c\/strong\u003e, the switch automatically \"opens\" to shut off the burners. Once the system cools to a safe \u003cstrong\u003e160°F\u003c\/strong\u003e, the switch \"closes,\" allowing the furnace to reset and resume operation.\u003c\/p\u003e\n\u003cp\u003eAs a genuine OEM part, the \u003cstrong\u003eSWT03031\u003c\/strong\u003e ensures your furnace maintains its factory safety ratings and operates exactly as engineered.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Protection:\u003c\/strong\u003e Acts as a fail-safe to prevent heat exchanger damage and fire hazards by stopping the system during an overheat event.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Reset: \u003c\/strong\u003eSelf-resetting design (160°F Close) means no manual intervention is required once the system cools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Quality: \u003c\/strong\u003eReplaces common manufacturer numbers like C340366P15 and L190-30F with factory-level precision.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Quick-Connect: \u003c\/strong\u003eFeatures standard terminal types for a fast, secure DIY or professional installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Trane \/ American Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e SWT03031 (SWT3031)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCut OFF (Opens):\u003c\/strong\u003e 190°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCut IN (Closes):\u003c\/strong\u003e 160°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Rating:\u003c\/strong\u003e 5.8 FLA \/ 34.8 LRA @ 120V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Voltage Rating:\u003c\/strong\u003e 200 MA @ 24V AC (1.5A Max)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 1 (Single Pole)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 1.5 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Quick Connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType: \u003c\/strong\u003eThermal Limit Switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC DEPOT Pro Tip: Is Your Limit Switch \"Tripping\"?\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eIf your furnace is short-cycling (turning off before reaching the thermostat setting), your SWT03031 is likely doing its job. Before replacing it, check your air filter. 90% of limit switch \"trips\" are caused by restricted airflow from a dirty filter or blocked vents. If the filter is clean and the furnace still shuts down, the switch may be \"weak\" or failed and requires immediate replacement.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference \u0026amp; Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis limit switch is a direct replacement for the following P\/N, Drawing Numbers, and X Numbers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eC340366P15\u003c\/li\u003e\n\u003cli\u003eX13540827150\u003c\/li\u003e\n\u003cli\u003e389696\u003c\/li\u003e\n\u003cli\u003eL190-30F (Commonly found on the side of the original part)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eExtensive Model Compatibility List\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNote: This is a partial list. Use 'CTRL+F' to find your specific model below.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe SWT03031 is commonly found in the following American Standard and Trane furnace model numbers:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eAmerican Standard Models:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eADC1B080A9421AC, ADC1B080A9421AD, ADC1B080A9421AE, ADC1B080A9421AF, ADC1B080A9421AG\u003c\/li\u003e\n\u003cli\u003eADX080R942W7, ADX1B080A9421AC, ADX1B080A9421AD, ADX1B080A9H31BB\u003c\/li\u003e\n\u003cli\u003eADX2B080A9422AA, ADX2B080A9422AB\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTrane Models:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCDX1B080A9421AC\u003c\/li\u003e\n\u003cli\u003eTDC1B080A9421AC, TDC1B080A9421AD, TDC1B080A9421AE, TDC1B080A9421AF, TDC1B080A9421AG\u003c\/li\u003e\n\u003cli\u003eTDX080R942W7, TDX1B080A9421AC, TDX1B080A9421AD, TDX1B080A9H31BB\u003c\/li\u003e\n\u003cli\u003eTDX2B080A9422AA, TDX2B080A9422AB\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003ch2\u003e\u003cstrong\u003eSWT03031 is often found in the following furnace model numbers:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eAmerican Standard furnace model numbers:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eADC1B080A9421AC\u003c\/li\u003e\n\u003cli\u003eADC1B080A9421AD\u003c\/li\u003e\n\u003cli\u003eADC1B080A9421AE\u003c\/li\u003e\n\u003cli\u003eADC1B080A9421AF\u003c\/li\u003e\n\u003cli\u003eADC1B080A9421AG\u003c\/li\u003e\n\u003cli\u003eADX080R942W7\u003c\/li\u003e\n\u003cli\u003eADX1B080A9421AC\u003c\/li\u003e\n\u003cli\u003eADX1B080A9421AD\u003c\/li\u003e\n\u003cli\u003eADX1B080A9H31BB\u003c\/li\u003e\n\u003cli\u003eADX2B080A9422AA\u003c\/li\u003e\n\u003cli\u003eADX2B080A9422AB\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTrane Furnace model numbers:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCDX1B080A9421AC\u003c\/li\u003e\n\u003cli\u003eTDC1B080A9421AC\u003c\/li\u003e\n\u003cli\u003eTDC1B080A9421AD\u003c\/li\u003e\n\u003cli\u003eTDC1B080A9421AE\u003c\/li\u003e\n\u003cli\u003eTDC1B080A9421AF\u003c\/li\u003e\n\u003cli\u003eTDC1B080A9421AG\u003c\/li\u003e\n\u003cli\u003eTDX080R942W7\u003c\/li\u003e\n\u003cli\u003eTDX1B080A9421AC\u003c\/li\u003e\n\u003cli\u003eTDX1B080A9421AD\u003c\/li\u003e\n\u003cli\u003eTDX1B080A9H31BB\u003c\/li\u003e\n\u003cli\u003eTDX2B080A9422AA\u003c\/li\u003e\n\u003cli\u003eTDX2B080A9422AB\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Trane \/ American Standard","offers":[{"title":"Default Title","offer_id":52590941208939,"sku":"SWT03031","price":58.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/SWT03031.jpg?v=1764023135"},{"product_id":"trane-limit-switch-swt01635-oem-replacement-open-180f-close-150f","title":"Trane Limit Switch SWT01635, OEM Replacement, Open-180F, Close-150F","description":"\u003ch1\u003e\u003cstrong\u003eTrane \/ American Standard SWT01635 Genuine OEM Furnace Limit Switch (180°F \/ 3\" Insert) \u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Trane \/ American Standard \u003cstrong\u003eSWT01635\u003c\/strong\u003e is a \u003cstrong\u003ehigh-limit safety\u003c\/strong\u003e \u003cstrong\u003edevice\u003c\/strong\u003e engineered for specific \u003cstrong\u003egas furnace\u003c\/strong\u003e configurations. As a Genuine \u003cstrong\u003eOEM\u003c\/strong\u003e component, it serves as the primary \"watchdog\" for your heat exchanger's temperature. If the internal plenum temperature reaches the critical threshold of 180°F, the switch breaks the electrical circuit to the gas valve, instantly halting combustion to prevent catastrophic heat exchanger failure or fire hazards. Its \u003cstrong\u003e3-inch probe\u003c\/strong\u003e is designed to penetrate deeper into the airflow to provide a more accurate reading in high-capacity furnaces. \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Limit Thermal Protection: \u003c\/strong\u003eSpecifically calibrated to \"Open\" at 180°F, providing a higher safety ceiling for specific high-efficiency or large-BTU furnace models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Reset Logic:\u003c\/strong\u003e The switch is designed to \"Close\" and restore system operation once the temperature drops to 150°F, allowing for a 30°F cooling differential.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended 3\" Probe Depth:\u003c\/strong\u003e Features a 3-inch insert length (Standard L180-30), ensuring the sensor is positioned correctly within the heat exchanger's discharge air stream.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Integrity: \u003c\/strong\u003eBeing a Genuine OEM part, it maintains the UL\/CSA safety ratings of your original equipment, which can be voided by using generic \"will-fit\" alternatives. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details \u0026amp; Specification\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Trane \/ American Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number: \u003c\/strong\u003e SWT01635\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length:\u003c\/strong\u003e 3.0 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical: \u003c\/strong\u003e24V \/ 120V (5.8 FLA @ 120V)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct: \u003c\/strong\u003e Thermal limit switch \/ Thermostat assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Rating: \u003c\/strong\u003e 5.8 FLA, 34.8 LRA at 120V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles: \u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 1.5 LB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Quick Connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Thermal Limit Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCut Out Temp: \u003c\/strong\u003eOpen Temperature: 180F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCut In Temp: \u003c\/strong\u003eClose Temperature: 150F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA limit switch that trips at 180°F often indicates a significant airflow blockage or an oversized furnace for the ductwork. Before replacing SWT01635, verify that all supply registers are open and that the secondary heat exchanger (if applicable) is not plugged with debris. If the switch continues to trip after replacement, use a dual-port manometer to check your Total External Static Pressure to ensure your blower can move enough air to keep the heat exchanger cool. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSupersedes \/ Legacy \/ Drawing Numbers:\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSWT1635\u003c\/strong\u003e (Current shorthand)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eL180-30F\u003c\/strong\u003e (Thermal Spec)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eC340366P06\u003c\/strong\u003e (Original Drawing #)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eC340056P01\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSWT01257 \/ SWT1257\u003c\/strong\u003e \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eModel Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSWT01635 is a direct replacement in the following Trane and American Standard model numbers:\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTrane Models:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTDC \u003c\/strong\u003e(TDC120C960B4, TDC1B080A9421AD)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTDD \u003c\/strong\u003e(Standard 80% and 90%+ models)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTUC \u003c\/strong\u003e(TUC080C942B3, TUC100C948B6)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTUD \u003c\/strong\u003e(TUD100, TUD120 series)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTUH \u003c\/strong\u003e(TUH1D100A9601CB, TUH2C100A9V4VBA) \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eAmerican Standard Models:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eADC\u003c\/strong\u003e (ADC120C960B4, ADC080C942B8)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADD\u003c\/strong\u003e (Legacy 80% Upflow\/Downflow)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAUC\u003c\/strong\u003e (AUC120C960B4, AUC080C942B7)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAUD\u003c\/strong\u003e (AUD100, AUD120 series)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAUH \u003c\/strong\u003e(AUH2B060A9V3VAA, AUH2C100A9V4VAB) \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Trane \/ American Standard","offers":[{"title":"Default Title","offer_id":52591088042347,"sku":"SWT01635","price":17.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/SWT01635.jpg?v=1764022636"},{"product_id":"trane-limit-switch-180-open-150-close-swt01271","title":"Trane Limit Switch (180° Open, 150° Close), SWT01271","description":"\u003ch1 class=\"MsoNormal\"\u003eTrane Limit Switch (180° Open, 150° Close), SWT01271\u003c\/h1\u003e\n\u003cp class=\"MsoNormal\"\u003eThe \u003cb\u003eTrane SWT01271\u003c\/b\u003e is a mission-critical, genuine OEM safety component designed to serve as the \"thermal watchdog\" for your gas furnace. This high-limit switch functions as a normally closed circuit that monitors the temperature of the heat exchanger; if internal heat exceeds the safe threshold of 180°F, the switch snaps open to cut power to the gas valve, preventing catastrophic equipment failure or fire. Engineered specifically for Trane and American Standard furnaces, this \"brain\" of the safety circuit ensures that airflow remains within designed thermal parameters, automatically resetting once temperatures drop back to 150°F to resume normal heating cycles. \u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003eKey Features:\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cbr\u003e• \u003cb\u003ePrecision Thermal Airflow Management:\u003c\/b\u003e Factory-calibrated to snap open at exactly 180°F, ensuring the furnace never operates at temperatures that could crack the heat exchanger.\u003cbr\u003e• \u003cb\u003eGenuine OEM Fitment:\u003c\/b\u003e Engineered with the exact mounting flange and terminal orientation of part number \u003cb\u003eSWT01271\u003c\/b\u003e, providing a \"plug-and-play\" replacement for legacy sensors.\u003cbr\u003e• \u003cb\u003eRapid Reset Technology:\u003c\/b\u003e Features a bimetal disc designed to close the circuit at 150°F, fixing \"short-cycling\" issues caused by worn or drifted aftermarket limit switches.\u003cbr\u003e• \u003cb\u003eNoise \u0026amp; Vibration Resistant:\u003c\/b\u003e Built with high-grade ceramic and metal housing to eliminate the \"rattling\" or intermittent connectivity issues found in lower-quality universal switches.\u003cbr\u003e• \u003cb\u003eIntegrated Safety Logic:\u003c\/b\u003e Designed to communicate directly with the furnace control board to trigger specific diagnostic fault codes if an over-temperature event occurs.\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003eProduct Details:\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cbr\u003e• \u003cb\u003ePart Number:\u003c\/b\u003e SWT01271\u003cbr\u003e• \u003cb\u003eManufacturer:\u003c\/b\u003e Trane \/ American Standard (Genuine OEM)\u003cbr\u003e• \u003cb\u003ePart Type:\u003c\/b\u003e Fixed Temperature High Limit Switch\u003cbr\u003e• \u003cb\u003eTemperature Open:\u003c\/b\u003e 180°F (82°C)\u003cbr\u003e• \u003cb\u003eTemperature Close:\u003c\/b\u003e 150°F (66°C)\u003cbr\u003e• \u003cb\u003eVoltage:\u003c\/b\u003e 24V \/ 120V Compatible\u003cbr\u003e• \u003cb\u003eRotation\/Mounting:\u003c\/b\u003e Surface Mount Flange\u003cbr\u003e• \u003cb\u003eShipping Weight:\u003c\/b\u003e 0.15 lbs\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003e\n\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif; mso-bidi-font-family: 'Segoe UI Emoji';\"\u003e🛠️\u003c\/span\u003e HVAC Depot Pro Tip: Check the Air Filter First\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cbr\u003eIf your \u003cb\u003eSWT01271\u003c\/b\u003e is frequently \"tripping\" (opening), the switch is often doing its job correctly by reacting to a lack of airflow. Before replacing the limit, check for a dirty air filter, blocked return grilles, or a failing blower motor. A restricted system causes heat to build up rapidly, forcing the limit to open; repeatedly \"stressing\" a limit switch in this way will eventually cause the internal bimetal disc to fail in the open position.\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003eCross-Reference:\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cbr\u003e• \u003cb\u003eOEM Numbers:\u003c\/b\u003e SWT-1271, L180-30, B13701-52\u003cbr\u003e• \u003cb\u003eLegacy Numbers:\u003c\/b\u003e SWT00938, SWT01170, SWT01614\u003cbr\u003e• \u003cb\u003eDrawing Numbers:\u003c\/b\u003e D341103P12, 18-BA25D1-12\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003eModel Compatibility:\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cbr\u003e• \u003cb\u003eS9X1 Series:\u003c\/b\u003e S9X1B040, S9X1B060, S9X1C080, S9X1D120\u003cbr\u003e• \u003cb\u003eS9V2 Series:\u003c\/b\u003e S9V2B040, S9V2B060, S9V2C080, S9V2D120\u003cbr\u003e• \u003cb\u003eTUD\/TDD Series:\u003c\/b\u003e TUD1B040, TUD1B060, TUD1C080, TDD1B060\u003cbr\u003e• \u003cb\u003eAmerican Standard:\u003c\/b\u003e AUH1B040, AUH1B060, AUH1C080, ADH1B060\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e","brand":"Trane \/ American Standard","offers":[{"title":"Default Title","offer_id":52653152731499,"sku":"SWT01271","price":95.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/SWT01271_9b89316b-cefe-48b0-a5c9-eb107e8329d7.jpg?v=1775063138"},{"product_id":"goodman-1370908s-furnace-limit-switch-200-f-l200-40f-oem-hvac-safety-control-switch-24-volt","title":"Goodman 1370908S Furnace Limit Switch 200°F | L200-40F OEM HVAC Safety Control Switch | 24 Volt","description":"\u003ch1\u003e\u003cstrong\u003eGoodman 1370908S Furnace Limit Switch 200°F | L200-40F OEM HVAC Safety Control Switch | 24 Volt \u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Goodman \u003cstrong\u003e1370908S \u003c\/strong\u003eis a mission-critical genuine \u003cstrong\u003eOEM\u003c\/strong\u003e \u003cstrong\u003esafety limit switch \u003c\/strong\u003edesigned to serve as the \"brain\" for thermal protection within your gas furnace. This \u003cstrong\u003efixed\u003c\/strong\u003e-\u003cstrong\u003etemperature disc control \u003c\/strong\u003emonitors the heat exchanger's surface temperature, acting as a primary fail-safe to prevent catastrophic overheating. Specifically engineered for the \u003cstrong\u003eGMS8\u003c\/strong\u003e, \u003cstrong\u003eGDS8\u003c\/strong\u003e, and \u003cstrong\u003eGMP furnace series\u003c\/strong\u003e, this switch is a \"\u003cstrong\u003eNormally Closed\u003c\/strong\u003e\" component that opens the \u003cstrong\u003e24V safety loop \u003c\/strong\u003eif temperatures \u003cstrong\u003eexceed 200\u003c\/strong\u003e°F. Utilizing this factory-authorized replacement ensures that your system maintains its\u003cstrong\u003e UL safety certification\u003c\/strong\u003e and protects the heat exchanger from structural stress caused by restricted airflow.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue OEM Specification:\u003c\/strong\u003e Explicitly manufactured under part number 1370908S to match the original factory calibration for precise 200°F thermal interruption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Loop Integrity:\u003c\/strong\u003e Features a \"Normally Closed\" (NC) circuit design that provides 100% gas valve shutoff in the event of a blower failure or blocked internal filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Thermal Response:\u003c\/strong\u003e Engineered to fix specific \"limit tripping\" or \"short cycling\" issues by providing a reliable 40°F reset differential (L200-40F).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Temp Bimetal Disc:\u003c\/strong\u003e Constructed with a precision bimetal sensing element that resists \"welding\" or sticking, a common cause of failure in generic aftermarket safety switches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Mounting Flange:\u003c\/strong\u003e Designed for an exact fit in Goodman and Amana burner vestibules, ensuring the sensing probe is positioned at the optimal depth for accurate monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman-Amana \/ Janitrol\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Daikin Comfort Technologies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number: \u003c\/strong\u003e1370908S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 786710137090\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 1370908S-OEM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 0.05 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 24 VAC \/ 120 VAC Compatible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Temperature:\u003c\/strong\u003e 200°F (L200)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClose\/Reset Temperature:\u003c\/strong\u003e 160°F (40°F Differential)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Type:\u003c\/strong\u003e SPST (Normally Closed)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e 1\/4\" Male Spade Connectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Compatible with HSI and Spark Ignition Systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTake a Picture of the Mounting Flange First: Before removing the old switch, photograph its orientation and the wire colors attached to the terminals. If your furnace is tripping this limit, Diagnostic Check your air filter and evaporator coil for dirt buildup before installing the new 1370908S. A limit switch usually fails because it has been forced to \"cycle\" too many times due to restricted airflow; replacing the switch without fixing the airflow issue will lead to a repeat failure of the new part.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eSuperseded \/ Legacy Numbers:\u003c\/strong\u003e\u003c\/h3\u003e\n1370908, B1370908, B13709-08, 0130F00038, 0130F00038S\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eTexas Instruments \/ Klixon Equivalents:\u003c\/strong\u003e\u003c\/h3\u003e\n20500 Series L200-40\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eWhite-Rodgers \/ Emerson Equivalents:\u003c\/strong\u003e\u003c\/h3\u003e\n3L01-200\u003c\/li\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eDrawing Numbers:\u003c\/strong\u003e\u003c\/h3\u003e\nB13709 Series Safety Controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eModel Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMS8\u003c\/strong\u003e (Suffixes: 0403AX, 0603AX, 0804BX, 1005CX, 1205DX)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGDS8\u003c\/strong\u003e (Suffixes: 0403AX, 0603AX, 0804BX, 1005CX)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMP \u003c\/strong\u003e(Suffixes: 050-3, 075-3, 100-3, 100-4, 125-5)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMPN \u003c\/strong\u003e(Suffixes: 040-3, 060-3, 080-4, 100-4)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGHS8 \u003c\/strong\u003e(Suffixes: 0403AX, 0603AX, 0804BX)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMNT \u003c\/strong\u003e(Suffixes: 040-3, 060-3, 080-4, 100-4, 120-5)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":52759404151147,"sku":"1370908S","price":55.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/1370908S.jpg?v=1768512357"},{"product_id":"lennox-73w20-limit-switch-l175-30f-175-f-open-on-rise-5-oal","title":"Lennox 73W20 Limit Switch L175-30F 175°F Open-on-Rise 5\" OAL","description":"\u003ch1\u003e\u003cspan\u003e Lennox 73W20 Limit Switch L175-30F 175°F Open-on-Rise 5\" OAL\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003eThe Lennox 73W20 is a genuine OEM limit control switch (L175-30F) designed for use in Lennox, Armstrong, and Allied Air furnaces. This critical safety component monitors the temperature within the heating system and automatically interrupts the electrical circuit if the temperature exceeds a safe limit, preventing overheating and potential damage to the heat exchanger. \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Assurance:\u003c\/strong\u003e Designed to open the circuit precisely at 175°F to protect the furnace from dangerous overheating conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Operation:\u003c\/strong\u003e Features an automatic reset function, allowing the system to resume operation once the temperature drops to the safe threshold of 145°F.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Built with rugged metal materials to withstand the demanding thermal environment of a furnace.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect OEM Fit:\u003c\/strong\u003e Engineered for direct compatibility with numerous Lennox HVAC systems, simplifying installation and ensuring proper functionality. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature:\u003c\/strong\u003e Specification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e L175-30F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch Action:\u003c\/strong\u003e Open On Rise\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpening Temperature:\u003c\/strong\u003e 175°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Temperature:\u003c\/strong\u003e145°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length \u003c\/strong\u003e(OAL): 5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e   STILT (Surface Mount)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Automatic\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🛠️ \u003cstrong\u003eHVAC Depot Pro Tip:\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003eA faulty limit switch is a common cause of a furnace that cycles on and off repeatedly (\"short cycling\"). If your furnace is short cycling, use a multimeter to test continuity on this switch after the furnace has been running for a few minutes. If it opens prematurely (below 175°F), the switch is defective and requires replacement. \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Lennox \/ Armstrong \/ Allied Air\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawing\/X Numbers:\u003c\/strong\u003e 102857-07\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLegacy Numbers:\u003c\/strong\u003e 73W2001, 68J28, 68J2801, R102857-07 \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eModel Compatibility:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis safety switch fits numerous popular Lennox models, including: \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEL195UH045XE36B-01\u003c\/li\u003e\n\u003cli\u003eML193UH045XP36B-59\u003c\/li\u003e\n\u003cli\u003eLRP13GXK36-072-01\u003c\/li\u003e\n\u003cli\u003eVarious G-series and residential air handler units\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":52896738836843,"sku":"66255141841","price":65.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/73W20.jpg?v=1770747482"},{"product_id":"lennox-73w18-genuine-oem-auto-reset-limit-switch-120-150-f","title":"Lennox 73W18 – Genuine OEM Auto Reset Limit Switch (120-150°F)","description":"\u003ch1 class=\"MsoNormal\"\u003eLennox 73W18 – Genuine OEM Auto Reset Limit Switch (120-150°F)\u003c\/h1\u003e\n\u003cp class=\"MsoNormal\"\u003eThe \u003cb\u003eLennox 73W18\u003c\/b\u003e is a genuine OEM primary auto-reset limit switch designed for \u003cb\u003eLennox and Allied Air\u003c\/b\u003e furnaces. This critical safety component monitors the heat exchanger’s temperature to ensure the system operates within safe thermal parameters. If the furnace overheats due to restricted airflow or mechanical failure, this switch \"opens\" to shut down the burners, preventing equipment damage and potential fire hazards.\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003e\u003cb\u003eTechnical Performance\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cbr\u003eThis high-precision limit switch features a specific temperature range of \u003cb\u003e120°F to 150°F\u003c\/b\u003e, easily identified by its distinct \u003cb\u003epurple protective sleeve\u003c\/b\u003e. As an \"Auto Reset\" part, it is designed to close the circuit automatically once temperatures return to a safe level. Being a \"Genuine OEM\" part ensures the internal bimetal disc is calibrated to Lennox’s exact safety specifications, providing a more reliable response time and longer cycle life than generic alternatives.\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003e\u003cb\u003eKey Features and Function:\u003c\/b\u003e\u003c\/h2\u003e\n\u003cul style=\"margin-top: 0in;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l2 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eThermal Safety Integration:\u003c\/b\u003e Prevents furnace overheating by breaking the electrical circuit to the gas valve when the 150°F threshold is reached.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l2 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eAuto-Reset Logic:\u003c\/b\u003e Automatically restores furnace operation once the heat exchanger cools to 120°F, reducing unnecessary \"locked out\" service calls.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l2 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003ePurple Sleeve Identification:\u003c\/b\u003e Color-coded for easy field identification, ensuring the correct temperature-rated part is installed during repair.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l2 level1 lfo1; tab-stops: list .5in;\"\u003e\n\u003cb\u003eDirect-Fit Design:\u003c\/b\u003e Features standard 1\/4\" male spade terminals and a flat-mount flange for quick, plug-and-play replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"MsoNormal\"\u003e\u003cb\u003eProduct Details and Key Specifications:\u003c\/b\u003e\u003c\/h2\u003e\n\u003cul style=\"margin-top: 0in;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo2; tab-stops: list .5in;\"\u003e\n\u003cb\u003ePart Number:\u003c\/b\u003e 73W18\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo2; tab-stops: list .5in;\"\u003e\n\u003cb\u003eManufacturer:\u003c\/b\u003e Lennox \/ Allied Air (Genuine OEM)\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo2; tab-stops: list .5in;\"\u003e\n\u003cb\u003ePart Type:\u003c\/b\u003e Primary Auto-Limit Switch (L150-30)\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo2; tab-stops: list .5in;\"\u003e\n\u003cb\u003eOpen Temperature:\u003c\/b\u003e 150°F (30°F Differential)\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo2; tab-stops: list .5in;\"\u003e\n\u003cb\u003eClose Temperature:\u003c\/b\u003e 120°F\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo2; tab-stops: list .5in;\"\u003e\n\u003cb\u003eColor Code:\u003c\/b\u003e Purple Sleeve\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l1 level1 lfo2; tab-stops: list .5in;\"\u003e\n\u003cb\u003eShipping Weight:\u003c\/b\u003e 0.2 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"MsoNormal\"\u003e\n\u003cspan style=\"font-family: 'Segoe UI Emoji',sans-serif; mso-bidi-font-family: 'Segoe UI Emoji';\"\u003e🛠️\u003c\/span\u003e \u003cb\u003eHVAC Depot Pro Tip: Check Your Airflow\u003c\/b\u003e\n\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cbr\u003eIf you find this limit switch has tripped, investigate the cause rather than just swapping the part. A \"limit trip\" is almost always a symptom of an \u003cb\u003eairflow issue\u003c\/b\u003e. Before finishing the job, check for a dirty air filter, blocked return grilles, or a failing blower motor capacitor. Installing a new switch without fixing the airflow will likely lead to a repeat failure within hours.\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003e\u003cb\u003eCross-Reference \u0026amp; Compatibility:\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cbr\u003eThe 73W18 is a direct OEM replacement for the following part numbers:\u003c\/p\u003e\n\u003cul style=\"margin-top: 0in;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l3 level1 lfo3; tab-stops: list .5in;\"\u003e\n\u003cb\u003eOEM Numbers:\u003c\/b\u003e 73W1801, 100445-12, 36T01B3-30006, 49L59, 49L5901\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l3 level1 lfo3; tab-stops: list .5in;\"\u003e\n\u003cb\u003eAlternative Brands:\u003c\/b\u003e Fits Armstrong, Ducane, and Concord (Allied Air brands)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"MsoNormal\"\u003e\u003cb\u003eExtensive Model Compatibility List:\u003c\/b\u003e\u003c\/h2\u003e\n\u003cul style=\"margin-top: 0in;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo4; tab-stops: list .5in;\"\u003e\n\u003cb\u003eLennox Series:\u003c\/b\u003e Used extensively in \u003cb\u003eG40, G41, G50, G51, G60, and G61\u003c\/b\u003e gas furnace series.\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo4; tab-stops: list .5in;\"\u003e\n\u003cb\u003eAllied Air Series:\u003c\/b\u003e Fits various \u003cb\u003e90UGF and 80UHG\u003c\/b\u003e furnace models.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":53069695484267,"sku":"66255141842","price":72.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/73W18.jpg?v=1775519067"}],"url":"https:\/\/tophvacparts.com\/collections\/limit-switch.oembed?page=3","provider":"HVAC Parts and Equipment Depot Open To Homeowners and Contractors","version":"1.0","type":"link"}