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and Series 27 units
refer to the specific valve body material and trim requirements
Common Questions How many spacers are needed for a complete valve service
Tasked with ensuring airtight integrity
Reduced Downtime: Simplifies troubleshooting and restores operation quickly after safety protocols are triggered
York S1-025-35397-000 Limit Control and Series 27 unitsThe York S1 025 35397 000 is an essential manual reset limit control engineered for precision thermal monitoring within high efficiency furnace heat exchangers and air handling units. As a genuine OEM York replacement part, this HVAC safety switch is calibrated to provide high limit protection by breaking the electrical circuit to the gas valve or ignition control if internal temperatures exceed factory safety thresholds. Unlike automatic switches,