York S1-025-29041-006 Limit Switch and T921 series

and T921 series

This eliminates the risk of dropping small components into the thermostat assembly or onto the floor during a pneumatic control repair

This precision-machined OEM replacement part replaces obsolete part number B4089345

and Janitrol furnace models

this updated component ensures a pressurized

York S1-025-29041-006 Limit Switch and T921 seriesThe York S1 025 29041 006 Limit Switch is a critical OEM field service component engineered for precise thermal protection in York gas furnaces and air handlers. This automatic temperature limit switch operates within a fixed 170F to 200F range, serving as a primary safety control to prevent heat exchanger damage or unsafe plenum temperatures. Featuring a 3 inch insert probe, it provides accurate sensing of internal airflow temperatures, ensuring the