773-079

Ensure your two-stage gas furnace operates safely and efficiently with this replacement air pressure switch. Designed for multi-stage heating systems, this air proving switch monitors the pressure differential created by the inducer motor to verify proper venting and airflow before the ignition sequence begins. A faulty pressure switch is a common cause of furnace lockout and heating failures, making this an essential component for restoring reliable HVAC performance. Calibrated specifically for dual-stage operation, it ensures precise combustion control during both low-fire and high-fire cycles, providing enhanced safety and energy efficiency for residential heating units.
Type: Air Pressure Switch
Size: Standard HVAC component
Application: Two-stage gas furnaces and residential HVAC systems requiring air proving safety controls
Specifications: 2-Stage functionality; Vacuum Setpoints: -0.76" WC (Water Column) and -1.25" WC