120-898

This high-performance pressure transducer is an essential safety and monitoring component designed for modern HVAC systems, including furnaces, air handlers, and heat pumps. Also known as an air proving switch, this part accurately detects changes in air pressure to ensure the inducer motor or blower is creating the necessary airflow for safe operation. If your heating and cooling system is experiencing ignition failure, short-cycling, or displaying error codes related to pressure differentials, replacing the transducer can restore peak efficiency. Engineered for precision and reliability, this sensor sends critical feedback to the system control board to prevent operation during unsafe venting conditions, making it a vital replacement part for residential and commercial climate control maintenance.
Type: Air Pressure Transducer / Air Proving Switch
Size: Small
Application: Used in forced-air furnaces, central air conditioning systems, and heat pump units to monitor static pressure and verify proper ventilation before combustion or system activation.
Specifications: Electronic pressure sensing, high-sensitivity air differential monitoring, integrated electrical terminal connections, and durable housing for heat-intensive environments.