773-202

This premium Rheem / Ruud compatible air pressure switch is a critical safety component designed for residential gas furnaces and HVAC systems. Often referred to as an air proving switch, its primary function is to monitor the pressure differential created by the draft inducer motor. By ensuring that exhaust gases are being properly vented out of the heat exchanger, it allows the ignition sequence to proceed safely. This switch features a precise 0.55" WC (Water Column) set point, making it an essential replacement part for heating systems experiencing ignition failure, venting issues, or pressure switch lockout codes. Durable and reliable, this sensor helps maintain the efficiency and safety of your home heating equipment by preventing operation under hazardous venting conditions.
Type: Air Pressure Switch
Size: Compact
Application: Used in residential gas furnaces and HVAC units to monitor inducer motor performance and flue venting safety.
Specifications: Pressure Setting: 0.55" WC (Water Column); Function: Air Proving / Safety Interlock