773-299

This professional-grade Air Pressure Switch is a critical safety component designed for residential gas furnaces and HVAC systems. As an air proving switch, its primary function is to monitor the negative pressure generated by the inducer fan motor, ensuring that combustion gases are being safely exhausted before the ignition cycle begins. If the system detects a vent blockage or fan failure, this switch prevents the furnace from firing, protecting your home from hazardous conditions. Featuring a precise -0.65" WC vacuum set point, this component is a reliable solution for fixing common furnace issues like ignition lockout or pressure switch error codes. It is built for long-lasting performance and high sensitivity to pressure changes within the heat exchanger.
Type: Air Pressure Switch
Size: Small
Application: Used in high-efficiency gas furnaces and HVAC heating units to verify proper inducer blower operation and venting safety.
Specifications: Pressure Setting: -0.65" WC (Water Column); Type: Vacuum/Air Proving Switch; Application: HVAC Safety Control