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The A.O. SMITH 100288310 is a genuine OEM water heater heating element with gasket, rated at 240 volts and 7000 watts. It is designed to replace a failed or degraded heating element inside a residential or light-commercial electric water heater tank. The element converts electrical energy into heat, raising water temperature to the setpoint controlled by the thermostat. Because this is a factory-original part shipped in A.O. Smith factory packaging, it matches the original specifications of the unit it was designed for. Licensed plumbers and water heater service technicians are the primary installers of this component.
This element is intended for use in electric storage-tank water heaters where the original 240-volt, 7000-watt element has failed due to scale buildup, burnout, or physical damage. It is not a universal or generic replacement. Correct fitment depends on the specific model number and serial number of the water heater being serviced. Consult factory production records or A.O. Smith technical resources to confirm this part is correct for the unit before ordering.
This part is model- and serial-number specific to certain A.O. Smith electric water heater units. No universal fitment is implied. Verify the exact model number and serial number of the water heater before installation to confirm this element is the correct replacement.
Installation should be performed by a licensed plumber or qualified water heater technician in accordance with local plumbing codes and the manufacturer service documentation. Before beginning work, shut off the electrical supply at the breaker and close the cold-water inlet valve, then drain sufficient water from the tank to expose the element. Inspect the threads and mating surface before installing the new element and gasket, and torque only to the specification listed in the A.O. Smith service manual for this unit. Do not energize the element until the tank is fully refilled to prevent dry-fire damage.
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