How much does it cost to replace an anode rod in a water heater?

Author: Benny Carter IV  |  Last update: Thursday, February 12, 2026

Anode Rod Replacement: While an anode rod costs between $20 and $50, a plumber can replace it for $50 to $150. The job typically takes about an hour. The anode rod protects the tank from corrosive materials and needs to be changed every few years. Water Heater Tank Flush: A water heater flush kit can cost around $150.

Is it worth replacing anode rod in water heater?

The anode rod is a very important factor in tank life and should only be removed for inspection or draining. Replacement of the anode rod is recommended when consumption or weight loss is greater than 75%. With regular inspection and replacement of anode rod, tank life can be greatly extended.

How often should I replace the anode rod on my water heater?

When to Replace Your Anode Rod
  1. Timeframe. Anode rods require routine inspection and replacement, approximately every three to five years. ...
  2. Visual inspection. Check your water heater and water anode rod for corrosion and rust at least once per year. ...
  3. Tank age and condition. ...
  4. Performance problems. ...
  5. Manufacturer recommendations.

How much does a water heater anode rod cost?

While you might be inclined to let a local water heater repair professional handle replacing an anode rod, this is a relatively easy job you can complete in about an hour with basic hand tools and little to no plumbing experience. You'll spend between $20 and $50 on the rod.

What happens if you don't replace anode rod?

Over time, the metal in the anode rod will corrode away itself, leaving only a protective coating around the metal walls and bottom of your hot water tank.

How to Replace ANODE ROD on WATER HEATER: 2-Minute Tutorial Ep.11

How much does a plumber charge to replace an anode rod?

An important part of your water heater, it moves cold replacement water to the bottom of the tank when you use hot water; otherwise, both will mix and reduce the water temperature. Anode Rod Replacement: While an anode rod costs between $20 and $50, a plumber can replace it for $50 to $150.

What are the symptoms of a bad anode rod?

Top 3 Signs of Anode Rod Failure
  • Rusty or Disintegrating Anode Rod. Regular inspection of the anode rod is crucial to identifying signs of failure. ...
  • Foul Smell or Discolored Water. Another sign of anode rod failure is foul-smelling water or discolored water, often appearing brownish or rusty. ...
  • Noisy Water Heater.

How often should I flush my water heater?

Most homeowners should flush their water heaters every 6 months or so, but if you have extremely hard water, you may want to do it more often. Flushing your hot water heater could be necessary as often as every few months depending on the mineral content of your local water supply.

What is the life expectancy of the anode rod in a hot water heater?

However, most professionals recommend inspecting the anode rod every one to three years and replacing it every four to five years. If your water supply has a high mineral content or if your water heater usage is heavy, these timelines may need to be shortened.

Will an aluminum anode rod get rid of smell?

Water Heater Aluminum Anode Rod Will Help Eliminate Odor In Water. Our Water Heater Aluminum Anode Rod can be installed in most water heaters for the elimination of Smelly Rotten Egg Odor in your hot water. This replacement anode has a hex nut on top and 3/4" NPT threaded nipple for easy installation.

Should I replace a 10 year old water heater?

If you suspect your water heater is more than 10 years old—it is time to consider replacing it before you're left with an emergency decision. To determine the age of your water heater, you'll need to identify the Brand Name and Serial Number for your unit.

Can you run a hot water heater without an anode rod?

Without a functioning anode rod, the tank itself would start to corrode, leading to leaks and system failure. This is why the condition of the anode rod is often a good indicator of the overall health of the water heater.

What is the best water heater anode rod replacement?

Best Anode Rod for Residential Water Heaters

The choice between aluminum or magnesium anode rods for residential water heaters depends on the local water quality. Magnesium rods are better for areas with soft water, while aluminum rods are ideal for hard water areas.

How long does it take to replace an anode rod?

The frequency of anode rod replacement depends on several factors, such as water quality, usage patterns, and the type of anode rod installed. In most cases, we recommend inspecting and potentially replacing the anode rod every 3 to 5 years.

Do water heaters have 2 anode rods?

All water heaters have a minimum of one anode rod. Some water heaters have longer warranties because they have two anode rods. If there are two anode rods, that is because one is attached to a hex head at the top and the other is a combination anode attached to the hot water outlet.

How do I know when my anode rod needs replacing?

rust-coloured hot water – that smells – is a classic sign of actual, and serious, tank corrosion. With a bit of luck, it's the corroded and rusty anode rod that's discolouring your water and making it stink and taste weird. Either way, you do need to call your friendly local plumber before that tank is completely shot.

Is it hard to replace anode rod in water heater?

Anode rods are usually installed and kept in the heater for several years, so it may be a bit hard to get loose. You can try using a "breaker bar" for better leverage or you can also try tightening the rod just a little to loosen up the threads.

How long does a rheem anode rod last?

In any case, water heater anode rods are essential for protecting your tank from corrosion, but they eventually wear out after around 3-5 years, depending on many factors including the hardness or softness of your water.

What is the difference between magnesium and aluminum anode rods?

In summary, the main difference between magnesium and aluminum anode rods is that magnesium anode rods are more efficient in soft water and have a shorter lifespan, while aluminum anode rods are more efficient in hard water and have a longer lifespan.

How much does a plumber charge to flush a water heater?

The national average cost to flush a water heater is $160, but prices can vary in increments based on the tank size. A 30-gallon tank will cost between $90 and $120 on average, while a 70-gallon tank could cost anywhere between $180 and $250.

Should I flush a 7 year old water heater?

If neither you nor a professional have flushed your water within the last five years, Water Heaters Now recommends not flushing it yourself.

Is it better to flush or drain your water heater?

It is recommended that you flush your water heater at least once per year. Doing so will help to prevent the potential problems that sediment can bring over time. Typically, it takes one to two hours to flush a water heater. The size of your tank will impact the amount of time it takes to drain.

How do I know which anode rod to buy?

Selecting your new anode rod should be based on your water's condition and your budget. For example, to get rid of bacteria causing your water to smell foul, go with a zinc/aluminum or electric anode rod. For the most economical choice, magnesium is the way to go – but be ready to replace it again in a few short years.

What happens if you don't change your anode rod?

The rods can deteriorate in as little as 3 to 5 years, depending on many factors, including the hardness or softness of the water. Without a working anode rod, the water heater tank will be vulnerable to rust, corrosion, and other damaging effects of chemicals and minerals in the water supply.

Are electric anode rods worth it?

Customers say the powered anode rod effectively eliminates unpleasant sulfur odors from hot water systems, with many reporting immediate results after installation. The product is praised for its ease of installation and clear instructions, making it a convenient choice for homeowners.

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