Pentair Heater Thermistor Service Kit | 42001-0053S Jack's Magic Order today and elevate your

Order today and elevate your pool and spa experience with the TecMark Air Button White 3428 Series

Intended for OEM replacement use only

reliable flame startup without a standing pilot

it supports changing operating modes by directing flow toward spa jets or pool returns as needed

For Commercial 48 VGF RPM systems

Pentair Heater Thermistor Service Kit | 42001-0053S Jack's Magic Order today and elevate yourWhat This Part Is Used For Pentair 42001 0053S Heater Thermistor Service Kit is a replacement temperature sensor kit for compatible Pentair heaters. It monitors water temperature and communicates with the control system. Why This Part Matters A faulty thermistor can cause incorrect temperature readings or heater shutdown. Replacing the kit restores accurate sensing and stable heater control. Reliable temperature feedback supports consistent heating