AO Smith 100288279 Thermistor Kit

The AO Smith 100288279 thermistor kit is a reliable replacement temperature-sensing component for AO Smith electric tankless water heaters. The kit includes the thermistor and an O-ring for a proper, leak-free seal. The thermistor monitors water temperature so the control can regulate heating output accurately. Using the correct OEM kit restores precise temperature control and dependable operation.