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What is an anode rod?

April 26, 2017Anode Rod

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What is an anode rod?

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It is a magnesium or aluminum rod inserted in the heater, from the top, in an opening of its own or as part of the outlet nipple. The metal is self-sacrificing (corrodes); this protects the tank and elements from corroding. Replacement anode rods are available and easy to install.