773-058

This premium air pressure switch is a critical safety component designed for high-efficiency gas furnaces and HVAC heating systems. As an essential air-proving sensor, it monitors the negative pressure generated by the inducer blower motor to ensure the exhaust flue is clear and the system is venting properly before ignition. By detecting the precise pressure required for safe operation, this switch prevents the furnace from heating under hazardous conditions, such as a blocked vent or a failing motor. If your heating system is failing to ignite or throwing a pressure switch error code, this reliable replacement part is key to restoring safe, consistent warmth to your home. Engineered for durability and precision, it ensures your HVAC unit meets rigorous safety standards and operates at peak performance throughout the heating season.
Type: Air Pressure Switch
Size: Standard
Application: Commonly used in residential gas furnaces and forced-air heating systems to monitor venting and inducer motor draft performance.
Specifications: Pressure Rating: 0.43" WC (Water Column); Function: Air Proving/Safety Interlock