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The Daily Insight

How do you change a gas water heater element

Author

Nathan Sanders

Published Apr 27, 2026

Turn Off the Power.Drain the Tank.Remove the Existing Element.Install the New Element.Refill the Tank.Reconnect and Repower.

Can you replace a water heater element yourself?

The task of replacing a water heater element may seem difficult, but most homeowners can make this repair themselves. If your water heater is slow to heat, runs out of hot water, or doesn’t deliver hot water at all, there’s a good chance that one or both of your heating elements are not working properly.

Does a gas water heater have a heating element?

A gas heater looks like an electric unit, except that it doesn’t contain the two heating elements. It has a gas burner at the bottom, with the chimney running up through the middle of the tank.

How do I know if my hot water heater element is bad?

Touch a probe on the multitester to each screw on the element. If you get no reading, or a maximum reading, the element is bad. Elements do have some resistance, so a reading of 10-16 ohms is normal, with higher ohm readings for 3,500 watt elements and lower readings for 5,500 watt elements.

What size socket do I need to remove a water heater element?

If you have a 1/2″ drive socket you can use a Drive x 1-1/2 inch socket. The socket’s opening will fit the hex end on all standard residential water heater elements. To remove a water heater element without an element wrench, you simply place the 1-1/2 socket over the head of the heating element.

How long does a gas hot water heater last?

How Long Do Water Heaters Last? Based on the manufacturer’s suggested service life, the life expectancy of a water heater is about eight to 12 years. That varies with the location and design of the unit, quality of installation, maintenance schedule and water quality.

Are upper and lower water heater elements the same?

Upper and lower heating elements are identical, and the temperature is regulated by the upper and lower thermostat and high limit device. Electric water heater elements can be different in size, but the most common is 12″ (300 mm).

Should you replace both water heater elements at the same time?

Both heating elements generally do not work simultaneously. The only way to know which one is working would be to monitor the voltage at each heating element. … I recommend replacing both elements since you have to drain the tank to clean flush the sediment out anyway.

How much does a hot water heater element cost?

A water heater element can cost between $10 and $60 and can be found at most home improvement stores. If you’re comfortable with light electrical work, replacing a water heating element is a DIY task.

How do I choose a water heater element?

When selecting element, buy same wattage or less wattage… keep volts the same. It is ok to install higher watt up to 5500 on 4500 watt heater if breaker is 30 amp and wire is 10 gauge. It is ok to install lower watt: replace 4500 with 3500 as long as voltage is same.

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Are water heater elements Universal?

There are three types: screw in, bolt in and clamp in. They all have different wattage ratings and can work on either 120 or 240 voltage. Check your state and local codes before starting any project.

How do I know if my gas valve is bad on my water heater?

If the burner stays on, turn the gas supply off and replace the gas valve. If the pilot is lit, you have a tank of cold water, the thermostat turned up and the burner does not fire up, either the burner orifice is clogged or the water heater gas valve is bad.

How many elements are in a gas water heater?

Modern electric tank water heaters almost always come with two separate heating elements.

Can you use water without water heater?

Yes, with a few caveats. Is there a shutoff valve present on the cold water line to the water heater? If so, just turn it off. But be aware that if water passes through any fixture in the house you could end up with water spewing out of the hot water line where the water heater goes (known as backfeeding).

What can I use instead of an element wrench?

Here you can use a pipe wrench or pliers instead of the element wrench. Furthermore, breaker bars might also become utilized for the removal of an element wrench as they are hollow steel pipes that may likewise join adequately over the heater’s socket wrench handle.

Does it matter which wire goes where on a hot water heater element?

No, it does not matter which wire goes to which heating element terminal in this case – electricity can flow in either direction.

How many anode rods are in a water heater?

Usually when a hot water tank has two anodes you will find one of each. Hex head anode rods have a nut on them the threads directly into the top of the hot water tank. The tank has a threaded opening built in during the manufacturing process. It is possible to have two or more anode rods installed in your tank.

Does the length of a water heater element matter?

Does the length of a water heater heating element make a difference? No, not as long as you have the proper voltage, watts and style. Shorter elements have a larger diameter therefore the same surface area.

Which element comes on first in a water heater?

The upper thermostat first sends electrical energy to the upper element until the water temperature in the upper third of the tank reaches the thermostat setting. Power is then transferred to the lower element until the remaining water reaches the lower thermostat setting.

Does the pilot light stay on in a gas water heater?

Gas and propane fueled water heaters use a small flame to ignite the burner. This small flame is called a pilot light and it stays lit at all times. … But once the pilot light is relit, the water heater is able to ignite the gas burner and can begin to heat the water again.

How much does it cost to replace 40 gallon water heater?

Water heater costs by gallon A standard 40-gallon water heater costs $330 to $1,500 for the unit alone, or $500 to $2,500 including installation labor. *Price for tank unit only, not including installation.

What should it cost to replace a water heater?

Hot Water System TypeAvg. Hot Water PriceAvg. Hot Water Installation CostSolar Hot Water System supported with Electric Power$3650 to $5050+$2050 to $3550Solar Hot Water System supported with Gas$4950 to $6550+$2050 to $3800Heat Pump System$3350 to $4050$1050 to $2550

How long does it take a plumber to install a water heater?

How Long Does the Installation Take? A certified plumber should be able to remove your old water heater and install the new one in approximately three hours. This time frame is under normal circumstances and with no unforeseen issues occurring.

How much should a 50 gallon water heater cost installed?

How much does it cost to replace a 50-gallon water heater? A 50-gallon water heater costs around $1,000 for an electric heater and $1,200 for a natural gas heater of the same capacity.

What causes water heater elements to burn out?

Sediment Buildup Minerals in hard water (such as calcium and magnesium) can lead to buildup in your water heater. In some cases, mineral sediment collects at the bottom of the tank, preventing heat transfer to the water. The affected heating elements get forced to work harder and eventually burn out.

How much is Lowes water heater installation?

When it comes to installing traditional tank water heaters, Lowe’s charges 325 dollars for basic installation.

How do you remove a stubborn water heater element?

Mix a solution of half vinegar and half water in a small cup. Dip a toothbrush into the solution and brush it between the seam of the heating element and the side of the heating tank. Apply the solution liberally, but do not allow it to drip heavily. Allow the solution to sit for 20 minutes.

How can I tell if my gas valve is bad?

If 24 volts is coming from the board to the gas valve terminals and you don’t hear that little clicking noise the internal valve makes, you could have a bad gas valve. To double-check, take the leads off to the gas valve and check there. Got 24 volts? Then something downstream of that 24 volts is not working.