773-229

This Rheem air pressure switch is a vital safety component designed for residential gas furnaces and HVAC systems. Functioning as an air proving switch, it monitors the pressure differential within the combustion inducer blower to ensure that exhaust gases are being safely vented before the ignition process begins. Calibrated to a specific -0.35" WC (Water Column) set point, this sensor prevents the heating system from operating under hazardous conditions such as a blocked flue, restricted vent, or failing inducer motor. If your furnace is cycling incorrectly or showing a pressure switch lockout error, this high-quality replacement part is essential for restoring reliable heating and ensuring the safety of your home's climate control system.
Type: Air Pressure Switch
Size: Compact
Application: Used in gas-fired furnaces and high-efficiency HVAC units to verify proper airflow and venting during the combustion cycle.
Specifications: Pressure Rating: -0.35" WC; Type: Air Proving/Differential Pressure Switch; Application: Furnace Safety and Ignition Control.