Laars Heating Systems E0253900 Thermistor Probe 318518-761 it is designed to mount

it is designed to mount directly to your existing draft inducer blower housing

non-fused power distribution component engineered for demanding HVACR applications

For complex dual fuel (fossil fuel kit) applications

but a yearly inspection and replacement cycle is the standard professional recommendation

Johnson Controls F-4218-1302 Panel Locknut

Laars Heating Systems E0253900 Thermistor Probe 318518-761 it is designed to mountThe Laars Heating Systems E0253900 Thermistor Probe is a precision engineered temperature sensor designed for high performance integration within commercial boilers and volume water heaters. This OEM thermistor utilizes an NTC (Negative Temperature Coefficient) semiconductor element to provide real time thermal monitoring, ensuring the control board can accurately modulate burner firing rates and maintain setpoint stability. Built for compatibility