Anode Rod Replacement
Preventive Service · No Trip Charge
The anode rod is the sacrificial component that keeps your tank from rusting from the inside out. Most homeowners don't know it exists - until the tank fails. Replace it every 4–6 years.
What's Included
- Rod inspection first - We check the existing rod before replacing. If it still has useful life, we'll tell you - we don't replace parts that don't need it.
- Correct rod selection - Anode rod material matters. Magnesium rods are standard; aluminum/zinc rods are better for homes with soft water or water that smells of sulfur. We select the right type for your water chemistry.
- Full reinstall and seal - We torque the new rod to spec and seal the port correctly so there's no leaking. A common DIY mistake is under-torquing, which leads to slow weeping around the fitting.
Signs your anode rod needs replacement
- Water heater is 4–6 years old and the rod has never been checked
- Rotten egg or sulfur smell coming from the hot water
- Slightly rusty or discolored hot water
- Tank is making more noise than usual
- You want to extend your tank's life proactively
- Water softener installed - accelerates anode rod depletion
- Previous owner never serviced the unit
- Water heater warranty maintenance requires rod inspection
Frequently Asked Questions
- What does an anode rod do?
- The anode rod is a metal rod - usually magnesium or aluminum - inserted into the top of your water heater tank. It corrodes sacrificially, meaning it attracts the corrosive elements in the water so the steel tank walls don't. Once the rod is depleted, the tank itself starts to corrode from the inside.
- How often does the anode rod need to be replaced?
- Every 4–6 years under normal conditions. Homes with water softeners or very aggressive water chemistry may need replacement every 2–3 years. We inspect the rod during every maintenance visit.
- Can a depleted anode rod cause the rotten egg smell?
- Yes - this is one of the most common causes of sulfur smell in hot water. When the magnesium rod depletes, the reaction between the remaining rod material and sulfate-reducing bacteria in the water produces hydrogen sulfide gas. Switching to an aluminum/zinc rod often eliminates the odor.
- Can I replace the anode rod myself?
- Technically yes, but it requires turning off the water supply, partially draining the tank and using a 1-1/16 inch socket with significant torque. The rod port is often seized on older units. We do it in about 30 minutes and make sure it's sealed correctly.
- Does replacing the anode rod extend my warranty?
- Many manufacturer warranties require documented maintenance including anode rod inspection. Keeping records of rod replacement can support a warranty claim if needed.
Related Services
Call us at (770) 334-4738 or book online.