020-144

This premium air pressure switch is an essential safety component designed for HVAC systems and gas-fired heating units. Functioning as an air proving switch, it monitors the pressure differential created by the inducer blower to ensure proper airflow and venting before the ignition process begins. If your heating system is failing to start, experiencing ignition lockout, or shutting down prematurely, a faulty pressure switch is often the cause. This switch provides reliable, precise performance, preventing the system from operating under unsafe conditions such as blocked exhaust vents or inducer motor failure. Engineered for durability, it is a key replacement part for maintaining the efficiency and safety of residential and light commercial climate control systems.
Type: Air Pressure Switch / Air Proving Switch
Size: Standard HVAC component
Application: Used in forced-air furnaces, gas-fired heaters, and HVAC units to verify vacuum or pressure levels for safe operation.
Specifications: Pressure-actuated safety mechanism, air proving functionality, high-reliability contact points.