The Hayward Thermistor is built to keep your pool equipment running the way it should.

The Hayward IDXLTER1930 Thermistor is a genuine OEM temperature sensing component designed for use in compatible Hayward pool and spa heaters. Thermistors are precision temperature sensors that provide accurate measurements of water and system temperatures to the heater’s control board. These readings help the system regulate burner cycles, maintain set temperatures, manage defrost sequences, and ensure safe operation.

Over time, exposure to heat, water, and system cycling can cause thermistors to drift or fail, leading to inaccurate readings, poor temperature control, or heater fault codes. Replacing a worn or failed thermistor with the IDXLTER1930 restores accurate temperature feedback, improves system efficiency, and enhances overall heater performance.

In stock and ready to ship — order your Hayward Thermistor today.