York S1-025-31814-000 Limit Switch

Expertly engineered for high-demand HVAC applications, the York S1-025-31814-000 Limit Switch is a critical safety component designed to maintain peak system integrity. This furnace high limit switch features a 3-inch insertion length, allowing for precise temperature sensing within the primary heat exchanger airflow. As an OEM York replacement part, it provides a reliable 150°F opening temperature and a 120°F closing temperature, preventing thermal overloads while ensuring efficient cycling. The auto-reset functionality eliminates manual intervention after a temporary overheat condition, restoring normal furnace operation automatically once safe thresholds are reached. Built for durability in residental and light commercial York HVAC systems, this component is essential for troubleshooting short-cycling or blower-run issues. Integrating this genuine York limit control ensures full compatibility with factory specifications, preventing the safety lockouts common with generic alternatives.

• Precision Safety: Calibrated for 150°F (Open) / 120°F (Close) to prevent heat exchanger damage.
• Direct Fit: 3-inch probe length ensures accurate air temperature monitoring in OEM housings.
• Automatic Reset: Self-correcting design restores system power without requiring a manual service call.
• OEM Reliability: Manufactured to exact York and Source 1 engineering standards for long-term field stability.

• How do I know if my limit switch is faulty? If your furnace blower runs continuously or the burners shut off shortly after ignition, the switch may be stuck or triggering prematurely.
• Can this be used in 13 SEER York packaged units? Yes, the S1-025-31814-000 is a standard replacement for various DCYZ series and related gas/electric air conditioners.
• Is the 3-inch insert length required? Yes, using the correct insertion depth is critical to ensure the bimetal element sits in the proper thermal path.

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.