773-297

Ensure your HVAC system operates safely and efficiently with this high-quality Air Pressure Switch. Designed for use in gas furnaces and heating units, this vacuum-actuated switch serves as a critical safety component by proving the operation of the draft inducer motor. It is calibrated to a precise -1.20" WC (Water Column) set point, detecting the necessary pressure drop to confirm that the exhaust venting is clear and the combustion blower is functioning correctly before allowing the heating cycle to proceed. A faulty or failing pressure switch can cause furnace ignition failure or short-cycling, making this part an essential replacement for restoring reliable climate control. Built for durability and precise response, it helps maintain the safety protocols required for residential heating applications.
Type: Air Pressure Switch
Size: Standard
Application: Used in gas-fired furnaces and HVAC units to monitor inducer motor performance and verify proper exhaust airflow for combustion safety.
Specifications: Pressure Rating: -1.20" WC (Water Column); Function: Air Proving/Vacuum Sensing; Compatible with residential heating systems requiring a negative pressure safety cutoff.