773-407

Ensure the safe and efficient operation of your high-efficiency gas furnace with this dual-stage air pressure switch. Designed as a critical safety component for HVAC systems, this air proving switch monitors the draft produced by the inducer motor to verify proper airflow before allowing ignition. By detecting potential venting obstructions or mechanical failures, it prevents hazardous conditions and protects your heating equipment. Specifically engineered for two-stage heating cycles, this differential pressure sensor maintains precise system performance and is a vital replacement part for restoring reliable furnace operation during the heating season.
Type: Air Pressure Switch
Size: Standard
Application: Used in residential high-efficiency two-stage gas furnaces to monitor inducer motor draft and ensure proper venting safety.
Specifications: Two-stage sensing; Trip points: -0.30" WC (Water Column) and -0.40" WC; Differential pressure type; Air proving safety functionality