York S1-024-35979-000 Pressure Switch Installing an orifice larger than

Installing an orifice larger than #35 for a system rated for this part will lead to overfiring

making it a versatile staple for any service truck

preventing upstream component failure

Internal Safety Protection: Protects the heat exchanger from thermal stress and potential cracks caused by restricted airflow or over-firing

Repeated tripping typically indicates restricted airflow

York S1-024-35979-000 Pressure Switch Installing an orifice larger thanThe York S1 024 35979 000 Pressure Switch is a critical safety component engineered for York, Coleman, and Luxaire residential and commercial furnaces. This OEM furnace pressure switch is calibrated to a specific set point of 0. 15" WC (Water Column), featuring a Single Pole Normally Open (SPNO) configuration that is designed to close on a fall in pressure. As a veteran technician knows, this switch monitors the negative pressure generated by the