Always check your controller's model number before installation

Utilizing this Goodman OEM part ensures that the combustion characteristics remain within the manufacturer's operational tolerances for the heating assembly

With a ±3% capacitance tolerance and an operating temperature range of -40°C to 70°C

Does this fit all Reznor models

and fan-only modes

Maxitrol TS121 Sensor Els PW 17895 Always check your controller's modelFor veteran technicians servicing indirect fired make up air units, the Maxitrol TS121 discharge air temperature sensor is the critical component for maintaining a stable 55 90F terminal temperature range. Specifically engineered for integration with Selectra Series 20, 21, 30, and 31 modulation systems, this thermistor based sensor delivers a resistance of 4,500 ohms at 77F, providing the Maxitrol amplifier with the sub second response times required