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Trane Limit Switch SWT01635, OEM Replacement, Open-180F, Close-150F

Name: Trane Limit Switch SWT01635, OEM Replacement, Open-180F, Close-150F
Brand: Trane / American Standard
SKU: SWT01635
Price: 17.45 USD
Availability: InStock

Low stock: 5 left

$17.45 USD

Sale Sold out

Shipping calculated at checkout.

Quick Feature Highlights

Genuine OEM Replacement for Trane & American Standard.
180°F High-Limit trip point for critical safety.
3-Inch Probe for deep-reach thermal sensing.
Automatic Reset at 150°F for system recovery.
Replaces old part numbers C340366P06 and SWT1257

Please visit our store for pick up.

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Specifications

Product Details & Specification

Brand: Trane / American Standard
Part Number: SWT01635
Insert Length: 3.0 Inches
Electrical: 24V / 120V (5.8 FLA @ 120V)
Product: Thermal limit switch / Thermostat assembly
Current Rating: 5.8 FLA, 34.8 LRA at 120V AC
Number of Poles: 1
Shipping Weight: 1.5 LB
Terminal Type: Quick Connect
Terminal Type: Thermal Limit Switch
Cut Out Temp: Open Temperature: 180F
Cut In Temp: Close Temperature: 150F

description

Trane / American Standard SWT01635 Genuine OEM Furnace Limit Switch (180°F / 3" Insert)

The Trane / American Standard SWT01635 is a high-limit safety device engineered for specific gas furnace configurations. As a Genuine OEM 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 3-inch probe is designed to penetrate deeper into the airflow to provide a more accurate reading in high-capacity furnaces.

Key Features

High-Limit Thermal Protection: Specifically calibrated to "Open" at 180°F, providing a higher safety ceiling for specific high-efficiency or large-BTU furnace models.
Automatic Reset Logic: The switch is designed to "Close" and restore system operation once the temperature drops to 150°F, allowing for a 30°F cooling differential.
Extended 3" Probe Depth: Features a 3-inch insert length (Standard L180-30), ensuring the sensor is positioned correctly within the heat exchanger's discharge air stream.
System Integrity: Being 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.

Product Details & Specification

Brand: Trane / American Standard
Part Number: SWT01635
Insert Length: 3.0 Inches
Electrical: 24V / 120V (5.8 FLA @ 120V)
Product: Thermal limit switch / Thermostat assembly
Current Rating: 5.8 FLA, 34.8 LRA at 120V AC
Number of Poles: 1
Shipping Weight: 1.5 LB
Terminal Type: Quick Connect
Terminal Type: Thermal Limit Switch
Cut Out Temp: Open Temperature: 180F
Cut In Temp: Close Temperature: 150F

🛠️ HVAC Depot Pro Tip

A 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.

Cross-Reference

Supersedes / Legacy / Drawing Numbers:
SWT1635 (Current shorthand)
L180-30F (Thermal Spec)
C340366P06 (Original Drawing #)
C340056P01
SWT01257 / SWT1257

Model Compatibility

SWT01635 is a direct replacement in the following Trane and American Standard model numbers:

Trane Models:

TDC (TDC120C960B4, TDC1B080A9421AD)
TDD (Standard 80% and 90%+ models)
TUC (TUC080C942B3, TUC100C948B6)
TUD (TUD100, TUD120 series)
TUH (TUH1D100A9601CB, TUH2C100A9V4VBA)

American Standard Models:

ADC (ADC120C960B4, ADC080C942B8)
ADD (Legacy 80% Upflow/Downflow)
AUC (AUC120C960B4, AUC080C942B7)
AUD (AUD100, AUD120 series)
AUH (AUH2B060A9V3VAA, AUH2C100A9V4VAB)

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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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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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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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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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 SWT01635, OEM Replacement, Open-180F, Close-150F