773-395

This high-performance Air Pressure Switch is a critical safety component designed for residential gas furnaces and HVAC heating systems. Calibrated to a -0.35" WC (Water Column) set point, this air proving switch monitors the negative pressure generated by the draft inducer motor to ensure proper venting and combustion airflow. If your furnace is failing to ignite or shuts off prematurely, a faulty pressure switch is often the cause. This replacement part ensures your heating equipment operates efficiently and safely by preventing the ignition sequence if hazardous venting conditions are detected. Built for durability and precise sensing, it is an essential component for maintaining reliable climate control and home safety.
Type: Air Pressure Switch
Size: Standard
Application: Residential gas furnaces, forced-air heating systems, and HVAC units requiring negative pressure air proving.
Specifications: -0.35" WC pressure rating, vacuum sensing operation, SPST normally open configuration.