773-321

This high-quality replacement air pressure switch is a critical safety component designed for HVAC systems, specifically gas-fired furnaces. Functioning as an air proving switch, it monitors the pressure generated by the inducer motor to ensure proper airflow and venting before allowing the ignition process to begin. If your heating system is failing to start or experiences intermittent shutdowns, a faulty pressure sensor is often the cause. This dual-rated switch is engineered to precise tolerances, featuring set points of 1.50" WC and 0.80" WC to ensure optimal combustion efficiency and household safety. Durable and reliable, it is an essential component for restoring heat and maintaining the performance of your residential or commercial furnace.
Type: Air Pressure Switch
Size: Standard HVAC Component
Application: Commonly used in furnaces and heating units to verify proper inducer motor draft and combustion venting.
Specifications: Dual set points: 1.50" WC (Water Column) and 0.80" WC; designed for air proving and draft verification.