York S1-025-41321-000 Limit Switch

Designed for professional field installation, the York S1-025-41321-000 Limit Switch is a critical safety component for maintaining thermal integrity in high-efficiency furnaces and packaged HVAC units. This genuine OEM replacement part features a precision-calibrated thermal disc engineered to open the control circuit at 150°F if internal temperatures rise above safe operating parameters, preventing equipment damage and hazardous conditions. Once the plenum temperature drops to a stable 110°F, the automatic reset function restores continuity to the heating circuit, ensuring system uptime without requiring manual intervention.

As a veteran technician knows, maintaining the correct furnace limit control specifications is vital for system-wide HVAC performance and safety. This L150-40F equivalent switch is built for high-duty cycles and long-term reliability in varying airflow environments. It is compatible with a wide range of York, Coleman, and Luxaire residential heating systems, making it a staple for any service truck. The compact design and standard mounting flange allow for rapid integration into existing control strings, providing an exact physical and electrical match for the original York limit switch.

Key Benefits

• OEM Compatibility: Direct fit for York, Coleman, and Luxaire gas furnaces, ensuring exact electrical trip points and mounting alignment.
• Auto-Reset Logic: Eliminates nuisance lockouts by automatically re-engaging the circuit once temperatures return to the 110°F threshold.
• Thermal Protection: Prevents heat exchanger fatigue and component overheating by maintaining strict 150°F maximum limits.
• High-Quality Construction: Manufactured to rigorous factory standards for dependable operation in demanding thermal environments.

Common Questions

• What are the specific trip temperatures for this limit? This switch is designed to open (trip) at 150°F and automatically close (reset) at 110°F.
• Is this a manual or automatic reset switch? This is an auto-reset limit switch, meaning it will restore the circuit once the temperature falls without needing a button press.
• Will this work in my Coleman furnace? Yes, as York and Coleman often share part numbers, the S1-025-41321-000 is frequently used across both brands; verify your specific model's parts manual for 100% confirmation.

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.