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Goodman B1370188 – Genuine OEM Primary Limit Switch (L170-40F)

Name: Goodman B1370188 – Genuine OEM Primary Limit Switch (L170-40F)
Brand: Goodman
SKU: 193031151947
Price: 19.99 USD
Availability: InStock

Low stock: 2 left

$19.99 USD

Sale Sold out

Shipping calculated at checkout.

Key Features & Specifications

Genuine OEM Goodman/Amana Primary Limit Switch
L170-40F Rating (Opens at 170°F, Closes at 130°F)
Automatic Reset for Reliable Safety Circuit Recovery
Durable Bimetal Construction for Accurate Sensing
Verified Replacement for B13701-88 and 11114701

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Specifications

Product Details and Key Specifications:

Part Number: B1370188 (Replaces B13701-88, 11114701)
Manufacturer: Goodman / Amana (Genuine OEM)
Part Type: Primary High Limit Switch
Temperature Rating: Opens @ 170°F / Closes @ 130°F (L170-40)
Voltage: 24V / 60Hz Control Circuit
Mounting: 2-Hole Flange Mount
Reset Type: Automatic
Shipping Weight: 0.1 lbs

description

Goodman B1370188 – Genuine OEM Primary Limit Switch (L170-40F)

The Goodman B1370188 is a critical Genuine OEM Primary Limit Switch 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.

Technical Performance:

Factory-calibrated with an L170-40F rating, this switch is designed to open at 170°F and automatically reset (close) once the temperature drops by 40°F (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.

Key Features and Function:

Feature 1: Precision Thermal Protection: Engineered to trip at exactly 170°F to protect the structural integrity of the heat exchanger.
Feature 2: Automatic Reset Logic: The switch restores the electrical circuit automatically once the system cools, allowing the furnace to resume normal operation after the fault is cleared.
Feature 3: High-Grade Bimetal Actuator: Features a rapid-response bimetal disc that ensures accurate temperature sensing over thousands of heating cycles.
Feature 4: Direct-Fit Mounting: Features a standard two-hole mounting flange for a secure, airtight seal against the furnace plenum or blower deck.

Product Details and Key Specifications:

Part Number: B1370188 (Replaces B13701-88, 11114701)
Manufacturer: Goodman / Amana (Genuine OEM)
Part Type: Primary High Limit Switch
Temperature Rating: Opens @ 170°F / Closes @ 130°F (L170-40)
Voltage: 24V / 60Hz Control Circuit
Mounting: 2-Hole Flange Mount
Reset Type: Automatic
Shipping Weight: 0.1 lbs

🛠️ HVAC Depot Pro Tip: The "Static Pressure" Check

If 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.

Cross-Reference & Compatibility:

The B1370188 is a direct OEM replacement for the following part numbers:

OEM Numbers: B13701-88, B1370188, 11114701, L170-40
Industry Refs: L170, 36TX11, 20162904 (compatible setpoints)

Extensive Model Compatibility List:

Goodman GMS8 Series: GMS80403AN, GMS80603AN, GMS80804BN, GMS81005CN
Goodman GDS8 Series: GDS80403AN, GDS80603AN, GDS80804BN
Amana AMH8 Series: AMH80403AN, AMH80603AN, AMH80804BN
Packaged Units: GPG, APG, GPC Series

Specification

Refund policy

Refund & Return Policy

Last Updated: June 2026

At HVAC Parts & Equipment Depot, customer satisfaction is important to us. This Refund & Return Policy explains how returns, exchanges, and refunds are handled for purchases made through TopHVACParts.com.

Return Eligibility

We accept returns within 30 days of delivery.

To qualify for a return:

The item must be unused, uninstalled, and in its original condition.
The item must be returned in its original packaging.
Model numbers and serial numbers must match the original purchase records.
Proof of purchase or order confirmation is required.

Non-Returnable Items

The following items are not eligible for return or refund:

Installed or used parts.
Products showing signs of installation, modification, or damage caused after delivery.
Items missing original packaging.
Sale or clearance items.
Special-order or custom-order products.
Returns requested more than 30 days after delivery.

Restocking Fee

Approved returns may be subject to a 20% restocking fee.

The restocking fee will be deducted from the refund amount after the returned item has been inspected and approved.

Damaged, Defective, or Incorrect Items

If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery.

Email: support@tophvacparts.com
Phone: (214) 734-5222

We may request photographs and additional information to help process your claim.

If the claim is approved, we will provide a replacement, exchange, or refund at no additional cost to you.

Exchanges

We replace items only if they are defective, damaged upon arrival, or incorrectly shipped.

To request an exchange, contact us at:

support@tophvacparts.com

Refund Process

Once your return is received and inspected, we will notify you by email regarding approval or rejection of your refund request.

If approved:

Refunds will be issued to the original payment method.
Processing typically takes 7–14 business days after approval.
Your financial institution may require additional time before the refund appears in your account.

Return Shipping

Customers are responsible for return shipping costs unless the return is the result of:

Our shipping error,
A defective product,
A damaged product received upon delivery.

Original shipping charges are non-refundable.

We recommend using a trackable shipping service and purchasing shipping insurance for higher-value items.

Return Address

HVAC Parts & Equipment Depot
1135 E Plano Parkway, Suite 8
Plano, TX 75074
United States

Professional Installation Notice

Many HVAC products require installation by a licensed HVAC professional.

HVAC Parts & Equipment Depot is not responsible for damages resulting from improper installation, misuse, unauthorized modifications, or failure to follow manufacturer instructions.

Special Orders

Special-order products must be picked up within 30 days of purchase unless other arrangements have been approved.

Unclaimed special-order products may be returned to the manufacturer and may be subject to applicable restocking fees.

Contact Us

If you have questions regarding returns, refunds, or exchanges, please contact us:

HVAC Parts & Equipment Depot

Phone: (214) 734-5222
Email: support@tophvacparts.com

Refund & Return Policy

Last Updated: June 2026

Return Eligibility

We accept returns within 30 days of delivery.

To qualify for a return:

The item must be unused, uninstalled, and in its original condition.
The item must be returned in its original packaging.
Model numbers and serial numbers must match the original purchase records.
Proof of purchase or order confirmation is required.

Non-Returnable Items

The following items are not eligible for return or refund:

Installed or used parts.
Products showing signs of installation, modification, or damage caused after delivery.
Items missing original packaging.
Sale or clearance items.
Special-order or custom-order products.
Returns requested more than 30 days after delivery.

Restocking Fee

Approved returns may be subject to a 20% restocking fee.

The restocking fee will be deducted from the refund amount after the returned item has been inspected and approved.

Damaged, Defective, or Incorrect Items

If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery.

Email: support@tophvacparts.com
Phone: (214) 734-5222

We may request photographs and additional information to help process your claim.

If the claim is approved, we will provide a replacement, exchange, or refund at no additional cost to you.

Exchanges

We replace items only if they are defective, damaged upon arrival, or incorrectly shipped.

To request an exchange, contact us at:

support@tophvacparts.com

Refund Process

Once your return is received and inspected, we will notify you by email regarding approval or rejection of your refund request.

If approved:

Refunds will be issued to the original payment method.
Processing typically takes 7–14 business days after approval.
Your financial institution may require additional time before the refund appears in your account.

Return Shipping

Customers are responsible for return shipping costs unless the return is the result of:

Our shipping error,
A defective product,
A damaged product received upon delivery.

Original shipping charges are non-refundable.

We recommend using a trackable shipping service and purchasing shipping insurance for higher-value items.

Return Address

HVAC Parts & Equipment Depot
1135 E Plano Parkway, Suite 8
Plano, TX 75074
United States

Professional Installation Notice

Many HVAC products require installation by a licensed HVAC professional.

HVAC Parts & Equipment Depot is not responsible for damages resulting from improper installation, misuse, unauthorized modifications, or failure to follow manufacturer instructions.

Special Orders

Special-order products must be picked up within 30 days of purchase unless other arrangements have been approved.

Unclaimed special-order products may be returned to the manufacturer and may be subject to applicable restocking fees.

Contact Us

If you have questions regarding returns, refunds, or exchanges, please contact us:

HVAC Parts & Equipment Depot

Phone: (214) 734-5222
Email: support@tophvacparts.com

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William Bartlett

Cecil really saved me with troubleshooting tips over the phone. Thought I was going to have to replace the blower motor and ended up only needing a motor run capcitor. Thank you and God bless!

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Cecil and Fidel were absolutely amazing and so helpful. We were happy they were open on Sunday, but was impressed with their knowledge and willingness to make sure we had everything we needed. If you need parts or service or install, I would recommend.

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Cole Meger

Our AC went out during the hottest stretch of summer, and with a one-year-old at home, we were desperate for a quick fix. These guys came through big time — not only did they source the part faster than anyone else in the area, they also walked me through DIY troubleshooting while I waited. Trustworthy, knowledgeable, and run by a solid local family. As someone who owns rental properties nearby, I’ll be sourcing all my HVAC parts from them moving forward. Highly recommend!

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Carl T. Droste

Had a power outage last night and during the 100 degree heat today noticed that the AC was not blowing any cold air. Pulled the capacitors to have them checked and also took video of the relay making noise even with the breaker was off. The proprietor and her staff were very friendly and helpful. She had the video analyzed and confirmed something was wrong. She checked one of the capacitors was a little low. Capacitor replacement is the biggest ticket item for HVAC repair. It is hundreds of dollars with the a capacitor only about $20.

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Cecil and his family have been a life saver. I walked in with very little knowledge on parts let alone how to repair my unit. All I had was my brother in FL who knows more than I do and Cecil at HVAC Depot. With 2 young kids at home I couldn't afford to wait for a HVAC tech. Cecil walked me through what I needed to know, even after hours when the shop closed. I successfully repaired the fan motor and replaced the capacitor. Thank you HVAC team for being totally awesome. Prices were amazing and I'm forever going to support this small family business. You and your family are what Texas is all about!!!

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I called HVAC Depot and was absolutely blown away by the fast, courteous and exceptional service. They were very knowledgeable about explaining what they were doing and what had happened to the ac system. If you ever need a HVAC team they are best and they won’t hesitate by coming out and they won’t leave until you are happy with the service. Thank you so much for your excellent service. Kudos to you Michelle for your amazing customer service.

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My AC went out in our home on Friday night. I went out and got the capacitor details and took them here first thing Saturday morning. Lady at the counter was friendly and had the capacitor I needed! When I got home, I installed the capacitor and AC is all good!!

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Jeff Ledesma

Awesome support and had everything I needed for an older unit! Then helped me out with the DIY!! Air conditioning back up and running at 100%!!
Thanks for everything

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Frequently Asked Questions

Questions? We’ve got you covered

Can anyone buy from your store, or do I need to be a licensed contractor?

We are open to the public! Homeowners, landlords, and DIYers are all welcome—no license required.

What kinds of HVAC parts do you sell?

We carry blower motors, fan motors, capacitors, control boards, contactors, thermostats, filters, copper lines, refrigerants, and more.

Do you sell parts for specific brands like Trane, Goodman, or Lennox?

Yes, we stock OEM and compatible replacement parts for major brands including Trane, Goodman, Lennox, Carrier, Rheem, and others.

Can you help me find the right part for my system?

Absolutely! Bring in the part, model number, or a picture, and our team will help match you with the correct replacement.

Do you offer returns or exchanges on parts?

Yes, we accept returns or exchanges within a set time period—just make sure the item is unused and in original packaging. Ask for specific terms at the counter.

Do you provide technical support or installation services?

While we don't install, we can answer basic questions and refer you to trusted local HVAC technicians if needed.

Do you sell refrigerants to the public?

We sell certain refrigerants, but EPA regulations require certification for purchase of products like R-410A or R-22.

Do you ship parts, or is it in-store only?

We offer both! You can shop in person or call to arrange shipping if you're out of town.

Goodman B1370188 – Genuine OEM Primary Limit Switch (L170-40F)