773-076

This premium 2-stage air pressure switch is an essential safety component designed for high-efficiency gas furnaces. As a critical air-proving sensor, it monitors the pressure levels within the inducer motor assembly to ensure flue gases are being properly vented before the ignition sequence begins. This dual-stage switch is specifically engineered to handle two distinct pressure setpoints, ensuring the heating system operates safely at both low and high fire stages. If your furnace is experiencing ignition failure, frequent cycling, or pressure switch lockout codes, this replacement part restores reliable performance and prevents hazardous operation. Built for precision and durability, it is a key component for maintaining the efficiency and safety of residential HVAC systems.
Type: Air Pressure Switch
Size: Small
Application: High-efficiency two-stage gas furnaces and residential HVAC heating systems requiring dual-stage air proving functionality.
Specifications: Dual-stage operation; Setpoints: -0.10" WC and -0.25" WC; Monitors inducer motor draft and venting pressure.