York S1-025-37481-000 Temp Control

The York S1-025-37481-000 Temp Control is a critical safety component engineered for high-limit temperature regulation in residential and commercial HVAC systems. This Single Pole Single Throw (SPST) snap-action switch is designed to monitor and respond to thermal extremes, providing reliable limit control for York furnaces, air handlers, and cooling units. Featuring a fixed setpoint, this temperature control switch automatically opens the circuit when the ambient or internal temperature reaches 255 degrees Fahrenheit and resets (closes) once the temperature drops to 215 degrees Fahrenheit.

As a genuine OEM replacement part, the S1-025-37481-000 ensures exact electrical characteristics and physical fitment for compatible equipment like models EF-10C00AWAAA1A and EA090C00A2AAA1A. For field technicians, the SPST 255Op 215CL configuration serves as a vital safeguard against heat exchanger overheating or blower motor failure. Built with a robust housing and high-conductivity terminals, this limit switch maintains consistent calibration under heavy cycling to prevent system downtime. Always verify the limit setpoints and terminal orientation against your existing field-installed part to ensure proper thermal response and system protection.

• Precise Thermal Limits: Operates with a specific 255°F open and 215°F close range to protect heat exchangers from structural damage.
• OEM Compatibility: Replaces factory-installed York limit controls without the need for mounting modifications or terminal splicing.
• Reliable Circuit Interruption: Features a high-quality SPST snap-action mechanism to prevent electrical arcing and ensure clean switching.
• Durable Construction: Engineered to withstand the rigors of high-temperature furnace environments, ensuring long-term setpoint stability.

Is this limit switch a manual or automatic reset?
The S1-025-37481-000 is an automatic reset control, meaning it will re-close the circuit once the temperature falls back to the 215°F threshold.

What causes this high limit switch to trip frequently?
Frequent tripping usually indicates restricted airflow, which can be caused by a clogged air filter, restricted ductwork, or a failing blower motor.

Can I use this as a universal replacement for other temperature ranges?
No, limit controls must match the exact OEM temperature specifications (255Op/215CL) to ensure the safety protocols of the specific unit are maintained.

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.