This genuine S1-025-39887-000 replacement part ensures the system meets original manufacturer delta-T and combustion efficiency specifications

Is this compatible with older part numbers

High-Temp Composition: Designed to resist degradation from high-temperature exhaust and acidic condensate

The Bunn 22300

The Johnson Controls T-4000-630 Conversion Kit is a field-proven solution for transitioning existing field-installed pneumatic thermostats to the T-4000 series

Lennox 18K44 Limit Switch Els PW 17895 This genuine S1-025-39887-000 replacement partThe Lennox 18K44 Limit Switch is a high reliability OEM replacement normally closed safety control designed for precise thermal management in residential gas furnaces and air handlers. This auto reset limit switch is engineered to maintain system integrity by monitoring internal plenum temperatures. It is calibrated to an open on rise (cut out) setpoint of 280F to prevent thermal overload and a close on fall (cut in) setpoint of 250F for automatic