it provides that extra room for thermal expansion when your blowers or pumps are running at high RPMs

preventing the operation of the burner under unsafe draft conditions

ensuring a plug-and-play fit for multi-zone HVAC renovations

this grille provides the durability and precise fitment required by veteran contractors

What are the symptoms of a failing discharge thermistor

York S1-025-43293-000 Temp Control it provides that extra roomThe 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