York S1-025-37344-000 Limit Switch Maintenance-Free: Eliminates the requirement for

Maintenance-Free: Eliminates the requirement for grease or consistent monitoring

the "D" suffix indicates that this specific model must be mounted horizontally for the poppet to function within specified pressure tolerances

check across the terminals while the system is cool

Always verify your specific sensor model before installation

York S1-025-37344-000 Limit Switch Maintenance-Free: Eliminates the requirement forThe York S1 025 37344 000 Limit Switch is a critical safety component engineered for precise thermal regulation within York, Luxaire, and Coleman gas furnaces. This OEM replacement part operates as a normally closed switch that opens the electrical circuit when the internal plenum temperature reaches its 215 degree Fahrenheit trip point. Designed with a 30 degree differential, the automatic reset furnace limit re closes at 185 degrees Fahrenheit,