773-348

This high-performance dual-port air pressure switch is a vital safety component for residential gas furnaces and HVAC systems. Designed to monitor the draft created by the inducer motor, this air-proving switch ensures that the combustion blower is operating at the correct pressure before allowing the heating cycle to proceed. Featuring a precise 3.00" WC (Water Column) setpoint and a Single Pole Single Throw (SPST) configuration, it provides reliable switching to prevent hazardous conditions caused by venting failures or blockages. If your furnace is failing to ignite or throwing pressure switch error codes, this replacement part is essential for restoring safe and efficient heating performance. Its dual-port design allows for accurate differential pressure sensing, making it a critical upgrade for maintaining optimal airflow and combustion safety.
Type: Air Pressure Switch
Size: Standard HVAC Component
Application: Used in forced-air gas furnaces and heating systems to verify proper venting and inducer motor operation.
Specifications: Dual port connection; 3.00" WC setpoint; Single Pole Single Throw (SPST) switch action; Air-proving functionality.