773-100

This professional-grade air pressure switch is a critical safety component for residential HVAC systems, specifically designed for use in furnaces and air handling units. Functioning as an air proving switch, it monitors the pressure generated by the draft inducer motor to ensure proper venting and airflow before the ignition sequence is allowed to proceed. Operating at 24 VAC with a 28 VA pilot duty rating, this switch prevents hazardous operation by detecting blockages or mechanical failures in the exhaust system. If your heating system is failing to ignite or cycling off prematurely, this reliable pressure sensor is a primary component for restoring safe and efficient furnace performance. It is engineered for precision sensing and long-term durability in high-demand heating applications.
Type: Air Pressure Switch
Size: Standard
Application: Commonly used in residential forced-air furnaces and HVAC systems to monitor inducer blower pressure and ensure safe combustion cycles.
Specifications: Voltage: 24 VAC; Power Rating: 28 VA Pilot Duty; Type: Air Proving / Differential Pressure