773-135

Ensure your heating system operates safely and efficiently with this premium Air Pressure Switch Assembly. Designed as a critical safety component for residential gas furnaces, this air-proving sensor monitors the pressure differential within the draft inducer system. It is calibrated to detect 0.86" WC and 0.17" WC pressure levels, ensuring that the exhaust fan is moving air correctly before the ignition process begins. This assembly is essential for preventing the furnace from operating under unsafe venting conditions. If your HVAC system is failing to ignite or showing pressure-related error codes, replacing a worn or faulty pressure switch can restore reliable performance and improve home safety.
Type: Air Pressure Switch
Size: Small
Application: Primarily used in residential gas furnaces and HVAC heating systems to monitor combustion air flow and vent pressure.
Specifications: Dual-pressure calibration: 0.86" WC (Water Column) and 0.17" WC; safety-interlock functionality for furnace ignition sequences.