York S1-025-35361-000 Limit Switch

The York S1-025-35361-000 Limit Switch is an essential safety component engineered for precise thermal monitoring within furnace heat exchangers. This 135-165F Auto Limit Switch features a 3-inch insertion depth, ensuring the bimetal sensor is positioned correctly in the airflow path for accurate temperature detection. Designed as a direct York furnace limit switch replacement, this part is compatible with a wide range of York, Coleman, and Luxaire gas furnaces. The high limit control functions as a normally closed SPST switch that opens the burner circuit if the plenum temperature exceeds the 165°F threshold, protecting the heat exchanger from structural damage. Once the temperature drops to the 135°F reset point, the HVAC safety control automatically resets to restore operation. For technicians troubleshooting frequent cycling or S1-025-35361-000 specifications, this OEM component ensures original equipment calibration and prevents nuisance tripping caused by inferior aftermarket tolerances.

Key Benefits for Contractors

• Precise Thermal Calibration: Fixed 135-165°F range ensures the system operates within manufacturer safety parameters.
• Optimized Insertion Depth: The 3-inch probe allows for accurate sensing in various plenum configurations without interference.
• OEM Reliability: Direct replacement eliminates mounting alignment issues and terminal mismatch during field service.
• Automatic Reset: Simplifies system recovery after temporary overheating events once airflow issues are resolved.

Common Technical Questions

What causes this limit switch to trip repeatedly?
Nuisance tripping is typically caused by restricted airflow, such as a dirty air filter, a failing blower motor, or an oversized furnace for the existing ductwork. Always verify static pressure before replacing the switch.

How do I test the York S1-025-35361-000 for failure?
Using a multimeter, check for continuity across the terminals when the switch is cold. If the circuit is open at room temperature, the internal bimetal disc has failed or the switch is stuck open and needs replacement.

Is this switch compatible with other HVAC brands?
While primarily used in York-produced equipment, it serves as a direct replacement for various Coleman and Luxaire models. Always match the part number and temperature rating on the existing switch's flange.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.