773-218

This premium Rheem Pressure Switch is a critical safety component designed for high-efficiency gas furnaces and HVAC systems. As an air proving switch, its primary function is to monitor the negative pressure generated by the draft inducer motor, ensuring the venting system is clear and operational before allowing the ignition process to begin. Operating at a precise -0.70" WC (Water Column) set point, this vacuum switch detects potential blockages in the flue or failures in the combustion fan, protecting your home and equipment from hazardous conditions. This durable replacement part is essential for restoring reliable heating performance and maintaining the strict safety standards of your residential heating unit.
Type: Air Pressure Switch
Size: Standard HVAC Component
Application: Primarily used in high-efficiency residential gas furnaces and HVAC air handlers to verify proper venting and inducer motor operation.
Specifications: Pressure Set Point: -0.70" WC; Function: Air Proving/Safety Limit; Sensing Type: Vacuum/Negative Pressure.