Ao Smith 100111302 Upper Thermostat Kit with Eco

Product Description

The AO SMITH 100111302 is an upper thermostat kit with an integrated energy cutoff (ECO) device, designed for residential electric water heaters. The kit is built on the Apcom WH10C thermostat platform and mounts in the upper element position of the tank assembly. It regulates water temperature by cycling the heating element on and off, while the ECO acts as a high-limit safety device that cuts power if water temperature exceeds a safe threshold. Licensed plumbers and water heater service technicians perform this replacement as part of routine diagnostic and repair work on electric storage tank units.

This upper thermostat kit fits electric water heater configurations that use the Apcom WH10C thermostat design. It is intended for the upper thermostat position in dual-element electric water heater systems, where the upper thermostat controls priority heating and houses the ECO safety device. Typical installations are found in residential settings, though this thermostat style also appears in light commercial electric water heater applications. Always verify the thermostat configuration and element wiring arrangement before ordering.

Key Features

• Integrated ECO (energy cutoff) high-limit safety device shuts power on over-temperature condition
• Upper position thermostat controls priority heating in dual-element systems
• Built on Apcom WH10C thermostat platform for consistent fit and function
• Kit format includes thermostat and associated components for a complete replacement
• Designed for electric storage tank water heater applications

Compatibility

Designed as an OEM-style upper thermostat replacement for electric storage tank water heaters using the Apcom WH10C thermostat configuration.

Installation Notes

Installation should be performed by a licensed plumber or qualified water heater technician. Disconnect electrical power at the breaker before removing the access panel or touching any internal components. Drain pressure from the tank if required by local code before servicing the element or thermostat assembly. Follow applicable local plumbing and electrical codes throughout the repair procedure.

Technical Specifications

• Position: Upper
• Thermostat Platform: Apcom WH10C
• ECO Included: Yes
• Application: Electric Storage Tank Water Heater

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100111302