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Trane Limit Switch SWT3031, OEM Replacement, Open-190F, Close-160F

Name: Trane Limit Switch SWT3031, OEM Replacement, Open-190F, Close-160F
Brand: Trane / American Standard
SKU: SWT03031
Price: 58.35 USD
Availability: InStock

Low stock: 5 left

$58.35 USD

Sale Sold out

Shipping calculated at checkout.

Why Choose the SWT03031?

Genuine Trane OEM Replacement
190°F Cut-Off / 160°F Reset
Critical Thermal Overload Protection
Quick-Connect Terminals for Easy Install
Replaces C340366P15 & L190-30F

Please visit our store for pick up.

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Fast & Tracked Delivery

30 Day money back guarantee

Specifications

Brand: Trane/American Standard
Current Rating: 5.8 FLA, 34.8 LRA at 120V AC;
Voltage: 200 MA at 24V AC
Amps: Minimum 1.5 A at 24V AC Max
Number of Poles: 1
Shipping Weight: 1.0
Terminal Type: Quick Connect
Type: Thermal Limit Switch
Cut OFF: Opens at: 190 F
Cut IN: Closes at: 160 F

description

Trane SWT03031 High Limit Thermal Switch – Genuine OEM (190°F / 160°F)

The Trane SWT03031 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 190°F, the switch automatically "opens" to shut off the burners. Once the system cools to a safe 160°F, the switch "closes," allowing the furnace to reset and resume operation.

As a genuine OEM part, the SWT03031 ensures your furnace maintains its factory safety ratings and operates exactly as engineered.

Key Features & Benefits

Thermal Protection: Acts as a fail-safe to prevent heat exchanger damage and fire hazards by stopping the system during an overheat event.
Automatic Reset: Self-resetting design (160°F Close) means no manual intervention is required once the system cools.
Genuine OEM Quality: Replaces common manufacturer numbers like C340366P15 and L190-30F with factory-level precision.
Universal Quick-Connect: Features standard terminal types for a fast, secure DIY or professional installation.

Product Specifications

Brand: Trane / American Standard
Part Number: SWT03031 (SWT3031)
Cut OFF (Opens): 190°F
Cut IN (Closes): 160°F
Electrical Rating: 5.8 FLA / 34.8 LRA @ 120V AC
Low Voltage Rating: 200 MA @ 24V AC (1.5A Max)
Number of Poles: 1 (Single Pole)
Shipping Weight: 1.5 lbs
Terminal Type: Quick Connect
Type: Thermal Limit Switch

🛠️ HVAC DEPOT Pro Tip: Is Your Limit Switch "Tripping"?

If 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.

Cross-Reference & Part Numbers

This limit switch is a direct replacement for the following P/N, Drawing Numbers, and X Numbers:

C340366P15
X13540827150
389696
L190-30F (Commonly found on the side of the original part)

Extensive Model Compatibility List

Note: This is a partial list. Use 'CTRL+F' to find your specific model below.

The SWT03031 is commonly found in the following American Standard and Trane furnace model numbers:

American Standard Models:

ADC1B080A9421AC, ADC1B080A9421AD, ADC1B080A9421AE, ADC1B080A9421AF, ADC1B080A9421AG
ADX080R942W7, ADX1B080A9421AC, ADX1B080A9421AD, ADX1B080A9H31BB
ADX2B080A9422AA, ADX2B080A9422AB

Trane Models:

CDX1B080A9421AC
TDC1B080A9421AC, TDC1B080A9421AD, TDC1B080A9421AE, TDC1B080A9421AF, TDC1B080A9421AG
TDX080R942W7, TDX1B080A9421AC, TDX1B080A9421AD, TDX1B080A9H31BB
TDX2B080A9422AA, TDX2B080A9422AB

SWT03031 is often found in the following furnace model numbers:

American Standard furnace model numbers:

ADC1B080A9421AC
ADC1B080A9421AD
ADC1B080A9421AE
ADC1B080A9421AF
ADC1B080A9421AG
ADX080R942W7
ADX1B080A9421AC
ADX1B080A9421AD
ADX1B080A9H31BB
ADX2B080A9422AA
ADX2B080A9422AB

Trane Furnace model numbers:

CDX1B080A9421AC
TDC1B080A9421AC
TDC1B080A9421AD
TDC1B080A9421AE
TDC1B080A9421AF
TDC1B080A9421AG
TDX080R942W7
TDX1B080A9421AC
TDX1B080A9421AD
TDX1B080A9H31BB
TDX2B080A9422AA
TDX2B080A9422AB

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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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!

Verified Buyer

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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Fuzzy Wuzzy

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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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.

Trane Limit Switch SWT3031, OEM Replacement, Open-190F, Close-160F