773-258

This premium two-stage air pressure switch is a vital safety component designed for high-efficiency gas furnaces. Functioning as an air proving switch, it monitors the draft created by the inducer motor to ensure combustion gases are being safely exhausted through the vent pipe. If proper pressure is not maintained, the switch prevents the furnace from igniting, protecting your home from potential hazards like carbon monoxide buildup. Specifically engineered for two-stage heating systems, this component features dual vacuum set points to manage airflow requirements at different firing rates. Whether you are troubleshooting a furnace that will not stay lit or replacing a failed sensor, this reliable vacuum switch ensures your HVAC system operates at peak safety and performance.
Type: Air Pressure Switch
Size: Small
Application: Specifically designed for two-stage gas furnaces and HVAC heating systems to monitor venting pressure and verify safe combustion airflow before ignition.
Specifications: Dual-stage operation; Pressure set points: -0.20" WC and -0.55" WC; Air proving functionality; Vacuum-actuated safety sensor.