773-170

This ICP Pressure Switch is a critical safety component designed for residential gas furnaces and HVAC systems. Functioning as an air-proving switch, it monitors the vacuum pressure created by the inducer blower motor to ensure proper venting of exhaust gases before the ignition sequence begins. With a precise set point of -0.70" WC, this switch prevents the heating cycle from proceeding if an airflow restriction or venting failure is detected, protecting your equipment and ensuring safe operation. It is an essential replacement part for troubleshooting furnace start-up issues and maintaining the reliability of your home heating system.
Type: Air Pressure Switch
Size: Standard Replacement Part
Application: Forced-air gas furnaces, HVAC induction systems, and ventilation safety circuits.
Specifications: Pressure Set Point: -0.70" WC (Water Column); Function: Air Proving; Switch Type: Normally Open (Closes on pressure rise/vacuum drop).