Ao Smith 100263932 Thermistor Replacement

Product Description

The AO SMITH 100263932 is a lower thermistor replacement designed for use in water heating systems. A thermistor is a temperature-sensing resistor that monitors water temperature and sends readings to the control board, allowing the unit to regulate heating cycles accurately. This part serves as a direct replacement for the original lower thermistor on compatible AO Smith water heaters. Installation is typically performed by licensed plumbers or water heater service technicians during routine maintenance or when a faulty thermistor causes erratic temperature control or error codes.

This thermistor is intended for the lower sensor position in applicable AO Smith water heater models. It is suited for residential water heating applications where the original lower thermistor has failed or is reading out of range. The part restores accurate temperature sensing at the lower element zone, which is critical for proper heating cycle control and energy efficiency.

Key Features

• Direct replacement for the original lower thermistor in compatible AO Smith water heaters
• Monitors lower-zone water temperature and communicates with the control board
• Restores accurate heating cycle regulation after sensor failure
• OEM-style fit designed to match original mounting and connection configuration

Compatibility

Designed as an OEM-style replacement lower thermistor for compatible AO Smith water heaters requiring part number 100263932.

Installation Notes

Installation should be performed by a qualified plumber or certified water heater technician. Before servicing, disconnect electrical power to the unit and shut off the cold water supply to prevent injury. Refer to the unit service manual for thermistor connector location and proper seating procedure. Follow all applicable local plumbing and electrical codes during service.

Technical Specifications

• Product Type: Thermistor
• Application: Replacement Part
• Position: Lower

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100263932