Description
The York S1-02425006703 Air Pressure Switch is a sensing and safety control part that monitors airflow pressure to regulate system operation . It operates at a calibrated setting of 0.90″ water column, responding to pressure changes by opening or closing an electrical circuit to confirm proper airflow conditions within HVAC systems. It connects to the pressure tubing and the control circuit. Its operation helps verify safe airflow, prevents improper combustion conditions, and supports stable heating performance during system operation.
