York S1-025-26366-001 Limit Switch OEM Compatibility: Specifically engineered for

OEM Compatibility: Specifically engineered for the Johnson Controls FD-1300 Series to ensure exact fit and finish

Is a vent limiter required when using this high-pressure spring

maintaining consistent motor control under heavy electrical loads

the 221729A is for units without a display

you must use the 320-degree rated York furnace replacement part specified by the manufacturer to ensure the system shuts down at the correct thermal threshold

York S1-025-26366-001 Limit Switch OEM Compatibility: Specifically engineered forThe York S1 025 26366 001 is a high precision HVAC furnace limit switch engineered for critical temperature regulation within commercial and residential gas fired units. This OEM York replacement part features a standardized SPDT configuration designed to disrupt the burner circuit if heat exchanger temperatures exceed safe operating parameters. Operating on an auto reset thermal disk mechanism, the unit is calibrated for an operating temperature