York S1-025-43293-000 Temp Control It is standard procedure to

It is standard procedure to replace the O-ring every time the filter element is changed

facilitating the monitoring of branch and main line pressures without disrupting system operation

The nylon reinforcement prevents "ballooning" under pressure

The most frequent symptom is a heat pump stuck in one mode (cooling or heating) despite thermostat calls

York S1-025-43293-000 Temp Control It is standard procedure toThe York S1 025 43293 000 is an OEM grade SPST temperature control switch engineered specifically for high demand HVACR environments. Built for precision in residential and light commercial equipment, this single pole single throw (SPST) thermal switch operates with a specified 80F open and 31F close threshold. This specific temperature range makes it an essential component for system protection and cycling within York heat pumps and air conditioning