773-132

This premium two-stage furnace air pressure switch is a vital safety component designed for high-efficiency gas heating systems. As an essential air-proving device, it monitors the pressure levels within the combustion chamber to ensure the inducer motor is creating the necessary draft for safe operation. By verifying proper airflow, it allows the ignition sequence to proceed, preventing the buildup of dangerous combustion gases. This dual-stage switch is specifically calibrated to handle multiple heating cycles, making it a reliable solution for residential HVAC units that utilize variable-stage firing. If your furnace is experiencing ignition failure or cycling issues, this pressure switch is a key replacement part to restore efficient and safe heating performance.
Type: Air Pressure Switch
Size: Standard HVAC Component
Dimensions: unknown × unknown × unknown
Application: Used in two-stage gas furnaces and HVAC systems to monitor combustion air pressure and ensure proper drafting before ignition.
Specifications: Dual-stage calibration; Low stage: 0.35" WC (Water Column); High stage: 0.60" WC (Water Column); Function: Air Proving/Safety Interlock.