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The AO SMITH 100110266 is an aluminum anode rod designed to protect the inner lining of residential and light-commercial water heaters from electrochemical corrosion. At 52 inches in length with a 3/4 inch NPT hex-end connection, this rod fits into the anode port of the water heater tank and acts as a sacrificial metal, corroding preferentially so the tank lining does not. Plumbers and water heater service technicians install this rod as a direct replacement when the existing anode rod is depleted, typically during routine maintenance or at the time of a water heater service call. Aluminum construction makes it suitable for areas with softer water chemistry.
This anode rod is used in storage-tank water heater applications where a 3/4 inch NPT anode port is present. It is installed as a replacement part during scheduled maintenance intervals or when inspection reveals that the existing sacrificial rod has degraded beyond serviceable condition. The 52-inch length accommodates taller tank configurations common in residential and light-commercial installations. Routine anode rod replacement is a recognized practice for extending tank service life and reducing the risk of premature tank failure due to internal corrosion.
Designed as an OEM-style replacement anode rod for storage-tank water heaters equipped with a 3/4 inch NPT anode port.
Anode rod replacement is typically performed by a licensed plumber. Before servicing, shut off the cold water supply and disconnect power to the water heater or turn off the gas supply as applicable. Allow the tank to cool and relieve pressure before removing the existing rod. A socket wrench and breaker bar are commonly required due to the torque needed to break loose a seated anode rod; consult applicable local plumbing codes for any jurisdiction-specific requirements.
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