773-338

Enhance the safety and efficiency of your multi-stage gas furnace with this high-quality 2-stage air pressure switch. Designed as a critical safety mechanism, this air-proving switch monitors the pressure produced by the inducer motor to ensure flue gases are properly vented before the ignition process begins. With dual-stage setpoints of 0.65" WC and 1.15" WC, this component is specifically engineered for high-efficiency HVAC systems that operate at variable speeds. If your heating system is experiencing ignition lockouts or pressure switch error codes, this reliable sensor is an essential replacement part to restore consistent climate control and safe operation to your residential heating unit.
Type: Air Pressure Switch
Size: Standard
Application: High-efficiency 2-stage gas furnaces and residential HVAC systems
Specifications: Dual-stage pressure sensing; Low-stage setpoint: 0.65" WC; High-stage setpoint: 1.15" WC; Air-proving safety functionality