773-291

This high-quality replacement air pressure switch is a critical safety component designed for use in gas furnaces and packaged HVAC units. Engineered to monitor the airflow and vacuum pressure generated by the draft inducer motor, this air-proving switch ensures that flue gases are being properly vented before the ignition process begins. If your heating system is experiencing ignition failure or shutting down shortly after startup, a faulty pressure switch may be the cause. This component features a precise -1.40" WC (Water Column) set point, providing reliable performance and ensuring your heating equipment operates safely and efficiently. Designed for durability and consistent sensing, it is an essential part for HVAC maintenance and professional furnace repair.
Type: HVAC Air Pressure Switch
Size: Small
Application: Used in residential and commercial gas furnaces, packaged heating systems, and forced-air HVAC units to verify proper combustion airflow and venting.
Specifications: Pressure Set Point: -1.40" WC (Water Column); Function: Air Proving and Combustion Safety; Type: Normally Open