773-189

This high-quality Rheem/Ruud air pressure switch is a vital safety component for residential gas furnaces and HVAC heating systems. As an air proving switch, its primary function is to monitor the pressure generated by the draft inducer motor, ensuring that flue gases are being properly vented before the burner is allowed to ignite. If the switch detects insufficient airflow or a blockage in the exhaust system, it will prevent the heating cycle from starting, protecting your home from potential hazards. Rated at 1.30" WC (Water Column), this precision-calibrated switch is an essential replacement part for restoring reliable performance and safety to your heating equipment. Whether you are troubleshooting a furnace that won't kick on or addressing intermittent ignition failures, this pressure switch provides the durability and accuracy required for modern high-efficiency HVAC units.
Type: Air Pressure Switch
Size: Standard HVAC Component
Application: Used in gas furnaces and residential heating systems to monitor draft inducer airflow and ensure safe venting of combustion gases.
Specifications: Pressure Setting: 1.30" WC (Water Column); Function: Air Proving/Safety Interlock