773-013

This premium furnace air pressure switch is a vital safety component designed for high-efficiency residential heating systems. Acting as an air-proving switch, it monitors the negative pressure generated by the draft inducer motor to ensure the combustion process has adequate airflow and that the venting system is clear of obstructions. Calibrated to a precise 1.95" WC set point, this switch protects your HVAC system by preventing the ignition cycle if safe operating conditions are not met. It is an essential replacement part for restoring furnace reliability, solving common ignition failures, and ensuring the safe operation of your home's heating equipment.
Type: Air Pressure Switch
Size: Standard HVAC Component
Application: Commonly used in forced-air gas furnaces to monitor inducer motor performance and flue pipe integrity. Suitable for high-efficiency heating units requiring a specific water column pressure threshold for combustion safety.
Specifications: Pressure Setting: 1.95" WC (Water Column); Function: Air Proving/Safety Interlock; Type: Diaphragm-actuated sensing switch.