773-008

This high-performance air pressure switch is an essential safety sensor for modern gas furnaces and HVAC systems. As a critical air proving component, it monitors the pressure differential generated by the inducer fan to ensure the exhaust vent is unobstructed and the system is safe to ignite. With calibrated set points of 0.25" WC and 1.22" WC, this dual-stage switch prevents the furnace from operating under unsafe conditions, such as a blocked flue or a failing inducer motor. If your heating system is showing pressure-related fault codes or failing to stay lit, this reliable replacement part is designed to restore proper furnace functionality and safety. It is engineered for precision and durability in demanding residential heating applications.
Type: Air Pressure Switch
Size: Standard HVAC Component
Application: High-efficiency gas furnaces, air proving systems, and residential heating equipment.
Specifications: Dual set points at 0.25" WC and 1.22" WC; designed for inducer motor pressure monitoring and safety cutoff.