773-418

This premium air pressure switch is a vital safety component for HVAC systems and furnaces. Designed as an air-proving switch, it ensures that the draft inducer motor is functioning correctly by sensing the pressure differential within the heating system. With a precise 1.50" WC (Water Column) calibration, this switch prevents the ignition sequence if proper airflow is not detected, protecting your equipment and home. If your furnace is failing to ignite or experiencing intermittent cycling, a replacement pressure switch may be necessary to restore reliable heating performance. This part is engineered for durability and high-sensitivity sensing in residential and light commercial heating applications.
Type: Air Pressure Switch
Size: Standard HVAC Component
Application: Used in gas-fired furnaces, air handlers, and HVAC units to monitor inducer motor draft and ensure safe ignition conditions.
Specifications: Pressure Setting: 1.50" WC; Function: Air proving and safety interlock; Compatibility: York and similar heating systems.