773-238

This Rheem Air Pressure Switch is a critical safety component designed for high-efficiency gas furnaces and HVAC systems. As an essential air-proving switch, it monitors the pressure within the inducer motor assembly to ensure proper venting of combustion gases. If the furnace detects insufficient airflow or a blocked vent, this switch prevents the ignition sequence, protecting your home and equipment. Replacing a faulty pressure switch is a common fix for furnaces that fail to ignite, inducer motors that run without the burner lighting, or systems that shut down mid-cycle due to airflow errors. This precision-calibrated switch ensures your heating system operates reliably and safely during the cold weather months.
Type: Air Pressure Switch / Air Proving Switch
Size: Standard HVAC component
Dimensions: Not specified × Not specified × Not specified
Application: Used in gas-fired furnaces and heating equipment to monitor combustion blower pressure and ensure safe exhaust venting.
Specifications: Dual-point pressure ratings: -1.15" WC (Water Column) / -0.98" WC.