**Note: If your unit currently has no thermistor connected and is being used, understand that this is not optimal for your unit and one should use the hot water sparingly to not cause further damage to the heating elements or other parts in the unit. Once your new set arrives, you can replace the thermistors and use your unit as needed.
Description: Thermistors w/ O-ring
Model #: THRM QC MEDLRG
Compatible With: models 18kW, 24kW, 27kW & 36kW
Shipping Details: Any parts ordered after 4pm EST will be shipped next day