773-084

Ensure your high-efficiency heating system operates safely and reliably with this premium two-stage air pressure switch. Designed as a critical safety component for dual-stage gas furnaces, this air-proving switch monitors the vacuum pressure generated by the draft inducer motor. It serves as a fail-safe, preventing the furnace from igniting unless proper airflow and venting are confirmed at both low and high-fire operation levels. If your HVAC system is experiencing ignition failure, intermittent heating cycles, or pressure-related error codes, this precision-calibrated switch is the ideal solution to restore optimal performance. Built for long-lasting durability, it ensures your furnace meets strict safety standards for combustion venting.
Type: Air Pressure Switch
Size: Standard HVAC component
Application: High-efficiency two-stage gas furnaces and HVAC heating systems. Used to monitor draft inducer airflow and ensure proper venting before combustion ignition.
Specifications: Two-stage operation; Low-stage set point: -0.17" WC; High-stage set point: -0.86" WC; Air-proving safety functionality.