773-370

This high-performance air pressure switch is a vital safety component for residential gas furnaces and HVAC heating systems. Designed as an air proving sensor, it monitors the negative pressure generated by the inducer fan to ensure the venting system is clear and operating safely before allowing the burner to ignite. With a precise 0.20" WC (Water Column) set point, this switch helps prevent the buildup of hazardous gases and ensures efficient combustion. If your furnace is failing to start or cycling off prematurely, a faulty pressure switch is often the cause. This reliable replacement part is engineered to restore proper system communication and safety protocols within your heating equipment.
Type: Air Pressure Switch
Size: Compact
Application: Commonly used in residential gas-fired furnaces, air handlers, and HVAC induction systems to verify proper airflow and venting draft.
Specifications: Pressure Set Point: 0.20" WC (Water Column); Function: Air Proving/Safety Cut-off; Compatibility: Standard furnace inducer motor assemblies.