773-376

This premium 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 differential pressure generated by the draft inducer motor to ensure proper venting and combustion airflow. If the pressure falls below the precisely calibrated 1.90" WC threshold, the switch prevents the furnace from igniting, protecting your home from hazards like improper venting or mechanical failure. Engineered for durability and precision, this pressure sensor is the ideal replacement for restoring reliable operation to your heating system. Common signs that this part needs replacement include furnace ignition failure, 'pressure switch stuck open' error codes, or intermittent heating cycles.
Type: Furnace Air Pressure Switch
Size: Standard compact HVAC switch
Application: Designed for use in residential gas furnaces and draft-induced heating equipment to verify airflow before allowing the ignition sequence to begin.
Specifications: Pressure Rating: 1.90" WC (Water Column); Type: Single-pole pressure switch; Function: Air proving and safety shut-off.