120-661

This high-quality air pressure transducer is a critical safety component designed for modern HVAC and furnace systems. Also known as an air proving switch, this part accurately monitors the air pressure within the inducer motor or blower assembly to ensure proper ventilation and exhaust flow. If your heating system fails to ignite, shuts off prematurely, or displays airflow-related error codes, a faulty pressure sensor may be the cause. This replacement part ensures your appliance operates efficiently and safely by confirming that the correct airflow is maintained throughout the heating cycle. Engineered for durability and precise atmospheric sensing, it is an essential component for maintaining reliable indoor climate control and system longevity.
Type: Air Pressure Switch / Transducer
Size: Small
Application: Commonly used in residential gas-fired furnaces, air handlers, and HVAC systems to provide air proving safety signals to the control board.
Specifications: Electronic differential pressure monitoring, air proving safety functionality, standard electrical terminal connections.