Honeywell T678A1437 Controller 30067439-890 The York S1-7681-3301 is a

The York S1-7681-3301 is a professional-grade HVAC rocker switch engineered to restore precise circuit control in a wide range of York heating and cooling systems

Designed with NBR (Buna-N) seals

this 100108291 element provides the rapid recovery rates and reliable wattage output required by modern plumbing systems

the EP-313-020 uses poppet-style solenoid valves that only cycle when a pressure change is requested

this CW (clockwise) rotation blade ensures the blower assembly moves air efficiently from the top intake through the floor-level discharge

Honeywell T678A1437 Controller 30067439-890 The York S1-7681-3301 is aThe Honeywell T678A1437 is a heavy duty remote bulb controller designed for precise two stage temperature control in commercial HVACR applications. As a veteran grade mechanical thermostat, it excels in regulating temperatures within ducts, pipes, tanks, and boilers. This model features dual SPDT switch outputs that operate in sequence, making it the standard choice for staging dampers, valves, or multi stage heating and cooling equipment. With a 0