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Carrier Factory Authorized Parts HH18HA199 OEM Limit Switch – Furnace Temperature Safety Control Replacement
Carrier Factory Authorized Parts HH18HA199 OEM Limit Switch – Furnace Temperature Safety Control Replacement
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Carrier HH18HA199 OEM Furnace Limit Switch
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Specifications
Specifications
description
description
The Carrier Factory Authorized Parts HH18HA199 is a genuine OEM limit switch designed for compatible Carrier heating equipment requiring this specific manufacturer part number.
The HH18HA199 Limit Switch is a temperature-sensitive electrical safety component used in approved furnace applications. Limit switches help protect heating equipment from excessive temperatures by changing the state of an electrical safety circuit when a specified temperature threshold is reached.
Designed as an equipment-specific replacement, the Carrier HH18HA199 helps maintain the manufacturer's intended furnace temperature protection and control operation when properly installed.
This OEM replacement component is suitable for professional HVAC service, furnace maintenance, and repair of compatible heating systems.
Key Features & Function
- Brand: Carrier Factory Authorized Parts
- Manufacturer Part Number: HH18HA199
- OEM Description: Limit Switch
- Genuine Carrier OEM replacement component
- Temperature-actuated electrical safety control
- Supports furnace overtemperature protection
- Designed for compatible Carrier heating equipment
- Equipment-specific electrical connections
- Factory replacement for approved applications
- Intended for professional HVAC maintenance and repair
Product Details & Specifications
|
Specification |
Details |
|
Manufacturer |
Carrier |
|
Brand |
Factory Authorized Parts |
|
Manufacturer Part Number |
HH18HA199 |
|
Item Number |
HH18HA199 |
|
OEM Description |
Limit Switch |
|
Product Type |
HVAC Temperature Limit Switch |
|
Component Category |
Furnace Temperature & Safety Controls |
|
Primary Function |
Temperature-Activated Safety Switching |
|
Equipment Application |
Compatible Heating Equipment |
|
Opening Temperature |
Verify manufacturer specifications |
|
Closing Temperature |
Verify manufacturer specifications |
|
Temperature Differential |
Verify manufacturer specifications |
|
Reset Type |
Verify manufacturer specifications |
|
Contact Configuration |
Verify manufacturer specifications |
|
Electrical Rating |
Verify manufacturer specifications |
|
Terminal Configuration |
Verify original component |
|
Mounting Configuration |
Equipment-specific |
|
Replacement Type |
OEM Factory Replacement |
|
Installation |
Qualified HVAC Technician Recommended |
Specification Note: The exact opening temperature, closing temperature, reset characteristics, and electrical ratings for HH18HA199 have not been independently verified. These specifications should be confirmed using Carrier's manufacturer documentation.
HVAC Depot Pro Tip
A furnace limit switch that repeatedly opens may indicate an overheating condition rather than a defective switch.
Before replacing the Carrier HH18HA199, inspect the furnace for airflow restrictions, blower problems, or other conditions that may cause excessive operating temperatures.
Recommended diagnostic checks:
- Confirm the furnace model and serial number.
- Verify the original limit switch part number is HH18HA199.
- Inspect the air filter for excessive dirt or restriction.
- Check supply and return airflow.
- Verify proper blower motor operation.
- Inspect the switch terminals and wiring connections.
- Test the switch according to manufacturer instructions.
- Confirm the replacement matches the original temperature ratings.
HVAC Depot Pro Tip: Never install a limit switch with a higher temperature rating to prevent repeated furnace shutdowns. The original safety temperature rating must be maintained.
Important: Never bypass or jumper a furnace limit switch. Disconnect electrical power before servicing, and correct the underlying cause of overheating before returning equipment to operation.
Equipment / Model Compatibility
The Carrier HH18HA199 is intended for select Carrier heating equipment requiring this specific OEM limit switch.
It may also be used in Bryant or Payne equipment where the manufacturer explicitly specifies HH18HA199.
Exact compatible equipment models have not been independently verified.
Before ordering, confirm:
- Complete equipment model number
- Equipment serial number
- Original limit switch part number
- Required opening and closing temperatures
- Reset type
- Electrical terminal configuration
- Mounting dimensions and design
Compatibility Notice: HH18HA199 is not a universal furnace limit switch. Manufacturer-approved compatibility must be verified before purchasing.
Specification
Specification
Refund policy
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:
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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Happy Shouts From Our Thrilled Customers
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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Riley Connolly
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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Linda Robinson
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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Paul Hamer
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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