Aftermarket Replacement for Hayward® H-Series® LowNox Thermistor

Save $30
Optimum Pool TechnologiesSKU: THERM-H-HSER

Sale price$19.99 Regular price$49.99


If the temperature on your Hayward® H-Series® control panel's display is showing an incorrect temperature, your thermistor may need to be replaced. Thermistors often display a temperature that is much too high when they reach the end of their lifespan. Fix this issue easily by replacing your worn-out thermistor temperature sensor with this Optimum Pool Technologies replacement thermistor. This thermistor is a high-quality alternative to the original Hayward® thermistor, designed specifically for use with H-Series® Electronic ED2 Style, Low Nox Induced Draft Heaters.


  • Compatibility: H-Series® Electronic ED2 Style, Low Nox Induced Draft Heaters, H250IDL2/H350IDL2/H400IDL2 Pool and Spa/Hot Tub Heaters, Electronic Ignition H150/H200/H210/H250/H300/H350/H400 Pool and Spa/Hot Tub Heaters


  • Replaces: IDXLTER1930
  • Manufacturer: Optimum Pool Technologies, Inc
  • Model: THERM-H-HSER
Statements of compatibility here are 100% guaranteed by Pool Guy Supply, Inc. and are not attributable to or made by Hayward® or any other original equipment manufacturer (OEM) of products sold on this website.

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