An anode rod is a water heater component, typically made of magnesium, aluminum, or zinc, that corrodes in place of the steel tank. By sacrificing itself, it protects the tank from rust and extends the life of the heater.
/ˈæ.noʊd ˌrɑːd/
An anode rod is a water heater component, typically made of magnesium, aluminum, or zinc, that corrodes in place of the steel tank. By sacrificing itself, it protects the tank from rust and extends the life of the heater.
What does an anode rod do in a water heater?
It corrodes in place of the tank, preventing rust and extending the water heater’s lifespan.
Source: The Cooling Company
The anode rod corrodes first to protect the tank.
Homeowners who replace worn anode rods prevent tank corrosion and avoid premature water heater failure.
Inspect the anode rod regularly. If more than 6 inches of core steel wire is visible, replace it.
“Inspect the anode rod regularly. If more than 6 inches of core steel wire is visible, replace it.”
Anode rods are often called “sacrificial rods” because they corrode to protect the tank.
How do I know if my anode rod is bad?
If the rod is heavily pitted or more than 6 inches of steel core is visible, it should be replaced.
Does a water softener affect anode rods?
Yes. Softened water can speed up corrosion, so rods may need more frequent replacement.
Can I replace an anode rod myself?
It’s possible, but a professional can ensure safe removal and proper sealing to prevent leaks.
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