120-425

This high-quality air pressure switch is a vital safety component for residential gas furnaces and HVAC systems. Often referred to as an air proving switch, this part monitors the pressure differential generated by the draft inducer motor to ensure that combustion gases are being correctly vented before the furnace ignites. A faulty pressure switch can lead to ignition failure or intermittent heating issues. This dual-rated switch features specific set points of 0.45" WC and 1.00" WC (Water Column), providing the precise monitoring required for safe and efficient heating. Engineered for reliability, it is an ideal replacement for maintaining the integrity of your home's heating equipment.
Type: Air Pressure Switch
Size: Standard
Application: Residential gas furnaces, HVAC heating systems, and air proving applications.
Specifications: Dual Pressure Set Points: 0.45" WC and 1.00" WC; compatible with various forced-air heating systems.