773-186

This premium air pressure switch is a vital safety component designed for York heating systems and furnaces. Functioning as an air-proving switch, it monitors the pressure differential within the inducer motor housing to ensure proper ventilation and exhaust flow before allowing the ignition sequence to proceed. If your furnace is experiencing startup failures or displaying pressure-related error codes, this high-precision switch is a common replacement part. Calibrated to a 0.20" WC set point, it ensures that your HVAC system operates safely and efficiently, preventing the buildup of hazardous gases by verifying that the combustion blower is operating at the required capacity. Built for long-term reliability and precise sensing, this component is essential for maintaining the performance and safety of residential gas furnaces.
Type: Air Pressure Switch
Size: Standard HVAC component size
Application: Used in gas furnaces and HVAC heating units to monitor inducer motor draft and ensure safe combustion air flow.
Specifications: Pressure Setting: 0.20" Water Column (WC); Application: Air Proving; Function: Normally Open/Closed safety circuit integration.