An aluminum or magnesium rod placed inside a gas or electric water heater tank to help protect against corrosion. Often referred to as a sacrificial anode rod because, over time, it slowly dissolves, [..]

a rod inside of a water heater that protects the tank from corrosion; usually made of magnesium or aluminum; most manufacturer warranty lengths vary depending upon the quality of the anode rod of a wa [..]

An anode rod, when used in a water heater, attracts corrosion causing products in the water. These products attack the anode rod instead of the metal tank itself. The anode rod should be inspected yea [..]