Posts Tagged: water heater anode rods

How a Water Heater Anode Rod Works

Why Every Water Heater Needs an Anode Rod (And What Happens When It’s Gone) Quick Summary All tank-style water heaters contain at least one anode rod. The anode rod is designed to prevent corrosion from damaging the water heater’s steel tank. The metals most commonly used in anode rods are magnesium, aluminium, or an aluminum-zinc alloy. These metals are used because they corrode more easily than steel, so they corrode rather than the steel tank. Well, until the anode rod is gone, then the tank corrodes. In other words, anode … Read More