How often should you replace the anode rod in a water heater?

Most water heater manufacturers will recommend inspecting the condition of the sacrificial anode every one (1) to three (3) years and replacing it when it has been consumed more than 50%. This is especially true if you have hard water or use a water softener.

What do I need to replace water heater anode?

If the water is clean, remove the rod to check its condition. To loosen the rod, you’ll need an air compressor, a 1/2-in.-drive impact wrench and a 1-1/16-in. socket. If you don’t have an impact wrench, go buy a cheap one for about $30. Even with a breaker bar, it can be nearly impossible to break the anode rod free.

Where is the anode rod on a hot water heater?

The rod may be under the water heater’s sheet metal top or connected to the hot water outlet nipple. (A few newer plastic-lined tanks have no anode rods to replace.) Before you get started, close the shutoff valve, turn on the hot water at a faucet to relieve pressure, and turn off the electricity or gas to the heater.

Why does my water heater anode rod smell bad?

Natural micro-organisms and sulfates that exist in some water can react to the aluminum or magnesium anode rods in the hot water tank, creating a rotten egg smell. If your hot water begins to smell bad, replace the anode rod with a less reactive zinc-aluminum rod to help combat the smell.

How do you change the rod on a water heater?

This Old House plumbing and heating contractor Richard Trethewey shows a simple way to add years to your water heater, by swapping out the sacrificial metal rod that prevents rust inside the tank. (See below for a shopping list and tools.)

What is a water heater anode rod and when should I replace it?

An anode rod is a sacrificial steel core wire that is wrapped with aluminum, magnesium, or zinc. Anode rods work by attracting corrosive particles found inside your water heater tank to protect the tank liner and reduce the risk of explosion. Anode rods should be replaced every 3 to 5 years depending on your water quality.

When is it time to change the anode rod in your water heater?

In most cases, you will need to change your water heater anode rod approximately once every 6 years so long as it operates under normal working conditions. However, depending on the composition of your water, you may need to change the anode rod more frequently.

Why do water heaters need an anode?

Powered anodes are also recommended when odor-causing bacteria infect a water heater tank and send noxious fumes running up water pipes, although special sacrificial anodes made from zinc and aluminum are also effective at counteracting this particular problem.

Why do you need an anode rod in your RV water heater?

An anode rod is a solid metal cylinder that gets screwed into a water heater’s drain plug to prevent the steel water heater tank from rusting inside . They are made from aluminum, magnesium, or zinc, all metals that will “sacrifice” themselves through electrolysis and save the exposed steel water heater tank from a similar fate.