10/20/2026
Rusty and decrepit may be perfect for Halloween decorations. But on the inside of your water tank? Not so much.
Have you ever wondered why the anode rod in a tank storage water heater is so important? This protective component is typically made from magnesium, aluminum, or a zinc-aluminum alloy. These metals corrode more readily than the steel tank itself, taking the brunt of corrosion first.
However, over time, the rod gradually deteriorates, and once depleted, the corrosion could start attacking the tank. This could lead to an irreversible, irreparable leak. How quickly an anode rod wears out depends on factors such as water chemistry and quality, hot water use, whether the home has a water softener installed, and the anode rod material.
The good news is that during tank water heater maintenance, Bradley Mechanical’s certified plumbers inspect the rod and recommend a replacement when needed.