How to Inspect and Maintain Your Water Heater Anode Rod to Extend Tank Life
Editorial Team Published: April 2026 ▲ Regular inspection of the anode rod can prevent premature water heater tank failure. (Source: Editorial Archive) In This Article What is a Water Heater Anode Rod? Step-by-Step Inspection Guide When to Replace Your Anode Rod Long-Term Maintenance Best Practices Frequently Asked Questions The anode rod—often called the "sacrificial rod"—is the single most important component protecting your water heater tank from rust and corrosion. Inspecting and replacing this rod when necessary can easily double the lifespan of your water heater, saving you thousands of dollars in premature replacement costs. What is a Water Heater Anode Rod? An anode rod is a steel core wire surrounded by a layer of metal (typically aluminum, magnesium, or zinc) that hangs inside your water heater tank. Because of electrochemical properties, corrosive minerals in the water attack the soft metal of the anode rod...