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how to repair water heater element

by Glenda Dare Published 2 years ago Updated 2 years ago
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  1. Shut off the electricity. Switch the 2 house circuit breakers dedicated for the water heater to OFF. Wear work gloves to protect your hands.
  2. Drain the water heater. Turn off the cold water supply to the water heater. ...
  3. Remove the heating element. Remove the heating element’s access cover mounting screw and pull off the cover. Fold the insulation back to expose the heating element.
  4. Install the new heating element. Insert the new heating element in the tank and tighten firmly. Reconnect the wires to the new heating element and tighten the screws.
  5. Close the drain valve. Close the drain valve and remove the garden hose. Flip the relief valve to the closed position. PHOTO: Close the drain valve.
  6. Fill the tank with water. Turn the cold water supply on to the water heater and allow the tank to fill with water. ...
  7. Restore power. Flip the house circuit breakers to the on position. PHOTO: Flip the circuit breakers to the On position.

Part of a video titled How to Replace an Electric Water Heater Heating Element
0:45
2:06
Pull the heating element out of the tank. Insert. The new heating element in the tank. And tightenMorePull the heating element out of the tank. Insert. The new heating element in the tank. And tighten it firmly reconnect the wires to the new heating element and tighten the screws reinstall.

Full Answer

When to replace a water heater?

  • Himin Solar Energy Group
  • V-Guard Industries Ltd
  • Ariston Thermo SpA
  • KODSAN Company
  • Sun Power Corporation
  • A.O Smith
  • Alternate Energy Technologies
  • Solav Energy

How do you change the heating element in a water heater?

  1. Shut off the electricity. Switch the 2 house circuit breakers dedicated for the water heater to OFF. Wear work gloves to protect your hands.
  2. Drain the water heater. Turn off the cold water supply to the water heater. ...
  3. Remove the heating element. Remove the heating element’s access cover mounting screw and pull off the cover. Fold the insulation back to expose the heating element.
  4. Install the new heating element. Insert the new heating element in the tank and tighten firmly. Reconnect the wires to the new heating element and tighten the screws.
  5. Close the drain valve. Close the drain valve and remove the garden hose. Flip the relief valve to the closed position. PHOTO: Close the drain valve.
  6. Fill the tank with water. Turn the cold water supply on to the water heater and allow the tank to fill with water. ...

How do you repair a water heater?

  • Turn off the power to the leaking water heater. ...
  • Next, shut off the water pressure to the tank. ...
  • Tighten loose pipe fittings. ...
  • Adjust the water temperature if the leak issues from the TPR valve. ...
  • Test the pressure in the cold water supply. ...
  • Replace a leaky drain valve. ...
  • Replace the water heater if the leak is at the bottom of the tank. ...

How do you replace an electric water heater element?

  • As it goes without saying, you have to disconnect the water heater from the power or gas supply. ...
  • Now, make sure that you drain the water heater altogether. ...
  • If you have not done this already, you have to apply the solution to loosen the heater element. ...
  • Once you think the element has loosened, you can begin removing it from the system. ...

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Can a heater element be repaired?

Heating elements can break and burn out, sag, and become misshapen. Most elements cannot be repaired, but they usually can be replaced. If you can't remove the heating element to replace it, you'll probably need to replace the entire appliance.

How can you tell if a 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 causes a heating element to burn out in a water heater?

Power Surges Every electrical water heater has a voltage rating, so exceeding that rating can burn out the heating element. You can prevent this from happening at your home by having surge protection installed by an electrician.

Is it worth replacing water heater element?

If the storage tank heater has reached the eight-year or older mark, it's worth looking at a replacement. New tank heaters are more energy-efficient, while an older storage tank is at risk of leaking.

Can you change a water heater element without draining the tank?

It is possible to change your water heater's heating element without draining your tank.

Will a water heater work with one element?

Only one element will come on at any one time. This is known as a flip/flop system. On a 240 volt water heater, there will always be 120 volts to both elements. The thermostat will direct the second leg of the 120-volts to the element to complete the 240 volts required to energize the element.

Can you repair a hot water heater element?

0:502:06How to Replace an Electric Water Heater Heating Element - YouTubeYouTubeStart of suggested clipEnd of suggested clipPull the heating element out of the tank. Insert. The new heating element in the tank. And tightenMorePull the heating element out of the tank. Insert. The new heating element in the tank. And tighten it firmly reconnect the wires to the new heating element and tighten the screws reinstall.

How long should a water heater element last?

We'll show you how to test the heating elements, remove one if it's bad, and install a new one. Just keep in mind that water heaters have a typical life span of 10 to 15 years. If your heater is approaching old age, replacement may be smarter than repair.

How long should a hot water element last?

A typical gas-powered or electric-powered hot water heater will last 8 to 12 years before needing to be replaced. Tankless and solar hot water heaters can last up to 20 if properly maintained.

What are the causes of failure of heating elements?

The mechanical failure of the heating element is mainly due to production of more heat. During the process of alloying, a portion may have a higher content of the higher resistivity constituent. This portion of the element will produce more heat and get failed.

Are hot water heating elements Universal?

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.

Are upper and lower water heater elements the same?

The upper element heats the upper portion of the water column. When it reaches a specified temperature, Rheem notes that it shuts off, and the lower heating element takes over, heating the rest of the water. This is an efficient, money-saving feature, as the water is heated in a consistent manner.

How do you test a water heater element?

1:042:29Water Heater Not Heating? Heating Element Testing - YouTubeYouTubeStart of suggested clipEnd of suggested clipNow touch a lead to one of the elements terminals and the other lead to the second terminal. TheMoreNow touch a lead to one of the elements terminals and the other lead to the second terminal. The meter reading should indicate 10 to 30 ohms of resistance if the component has continuity.

How can you tell if a heating element is bad?

Inspect the metal wire coil for any breaks in the wire. If the wire is solid and has no breaks in it, the heating element should be good. If the wire has a break in it, the heating element is defective.

How do you test a heating element?

1:252:35Oven Heating Element - Continuity Test - YouTubeYouTubeStart of suggested clipEnd of suggested clipSet the multimeter to the lowest ohms of resistance. Next touch the probes together and adjust theMoreSet the multimeter to the lowest ohms of resistance. Next touch the probes together and adjust the needle until it's calibrated at zero. If you're using a digital multimeter.

Are upper and lower water heater elements the same?

The upper element heats the upper portion of the water column. When it reaches a specified temperature, Rheem notes that it shuts off, and the lower heating element takes over, heating the rest of the water. This is an efficient, money-saving feature, as the water is heated in a consistent manner.

How to fix noisy water heater?

You can drain the Tank to get rid of the sediment, or you can try to clear the Tank using a decent calcification on it would be a definite solution to fix the noisy water heater tank. We don’t recommend either of these solutions, chances are you need a new hot water heater.

Why is my water heater not heating?

If your Electric Water Heater is not heating the water at all, then the issue is likely with the heating element. Sometime we can replace one or both heating elements, provided the rest of the hot water heater is in sound condition. Frequently we find that if a hot water heater is 6 years or older it makes more sense to replace the entire unit.

Why is my water heater not producing hot water?

If your water heater is not producing sufficient hot water according to your needs, this could be because it’s either too small of a water tank or the heater is on it’s way out.

How long is a water heater warranty?

All Residential and Commercial Hot Water Heaters come with a limited warranty life that may provide you with a warranty. Most manufacturers offer 6 years of warranty that covers the replacement of some elements, tanks, parts of Water Heaters. Check your service manual and warranty first.

What is the thermostat on a water heater?

The thermostat is one of the most essential parts of the Electric Water Heater, which helps to control the temperature. There are upper and lower thermostats installed in the water heater. The lower thermostat mostly helps to heat the water in the Tank, and if you have a big load of hot water, the upper thermostat takes the lead.

Why is my water heater making a loud noise?

The noisy sound is caused due to the hot water bubbles up through the sediment in the bottom of the Tank.

What valve do we close when cold water is in?

We close the inlet valve of cold water.

What happens if a water heater starts to leak?

When a water heater starts to leak, the mere thought of a repair can be scary. A small leak can be a sign that a bigger problem may exist. If left unattended, a small leak can turn into a catastrophic failure which could lead to severe water damage to the living areas inside your house.

Why is there water on the bottom of my water heater?

Not all visible water around the bottom of the water heater is caused by a leaky water heater. One of the most common causes of water on the floor, tank, or supply lines is condensation. Condensation forms when water vapor in the air changes from a gas to liquid form.

Can I Take a Shower if My Water Heater is Leaking?

However, whether or not you can take a shower when your water heater is leaking depends solely on the extent and the cause of the leakage. If the leakage occurs from the drain valve, it is perfectly safe to take a hot shower. Leaky delivery pipes are also fairly harmless in this regard.

Can a Leaking Water Heater be Fixed?

Repairing a leaking water heater may or may not be possible depending on the underlying cause behind the leakage. Common causes might include loose fittings, sediment accumulation in the internal tank, temperature or pressure gauge leakage, or a leaky drain valve. In loose fittings, the leakage can be treated by simply tightening up the loose components.

What does it mean when a water heater is leaking from the bottom?

What if my water heater is leaking from the bottom? If your water heater is leaking from the bottom, it may be leaking from the drain valve or the internal tank. Drain valves can usually be repaired. However, if the internal tank is leaking, the only repair is to replace the water heater.

Why does my water heater drain?

Typically if a drain valve begins to leak it’s usually because there is debris or sediment lodged in the drain valve or the drain valve is faulty.

How to check if water heater is gas?

If your water heater is a gas unit, set the fuel knob to pilot or a vacation mode. Dry up as much of the water as possible and do a visual inspection of the water heater for oblivious signs of leakage. Allow the water heater to sit for several hours to see if the water returns.

What is the heating element on an electric water heater?

Each of the heating elements are controlled by a separate thermostat. In an electric water heater, the bottom heating element is the workhorse, since it is at the bottom of the tank where cold water enters from a dip tube that extends down through the tank. The upper heating element really only contributes when there is a high hot water demand ...

How to clean a water heater?

Close the drain valve on the water heater. Open both the cold water inlet valve and the nearest hot water faucet. Keep the hot water faucet open for three minutes after obtaining a constant flow of water. This will purge the lines of any excess air and sediment.

How to tell if heating element is faulty?

It is usually easy to tell which heating element is faulty. A constant supply of lukewarm water indicates a defective upper heating element, while a short supply of fully hot water indicates a defective lower heating element. Replacing heating elements is a relatively easy project. The new heating elements must be of the same style ...

What happens if one heating element goes bad?

If one heating element has gone bad, it is possible the other one will shortly follow, and replacing both can proactively prevent a second repair in the near future. Some manufacturers sell heating elements in repair kits that include both heating elements, as well as the thermostats .

How to disconnect wires from circuit?

Loosen the screws holding the wires to each of the two terminal screws and disconnect the circuit wires.

How much does an electric water heater cost?

Estimated Cost: $10 to $60. Unlike gas water heaters that have gas burners, electric water heaters rely on a pair of upper and lower metal heating elements to heat the water. Similar to the way in which oven heating elements work, the heating elements in a water heater heat up when electrical current passes through them.

Why is it important to run hot water in a tank?

This is very important because the heating elements operate off a thermostat, and hot water in the tank will affect electrical flow to the heating elements. Open a hot water faucet and run the water to verify it is cool.

What happens if a water heater element breaks?

A broken heating element produces no heat, causing the water heater to produce very little hot water or to run out of hot water quickly. Replace a broken heating element with the manufacturer-approved water heater part.

How to remove a heat shield from a thermostat?

Fold the insulation back to expose the heating element. Lift up the tab located at the top of the plastic shield to release the shield from the thermostat and remove the shield. Loosen the screws securing the wires to the heating element and disconnect the wires.

How much does it cost to change heating elements?

Most larger units have 2 heating elements. They are relatively inexpensive and not bad to change. Most will run you between 10 to 25 dollars, each. It is a good idea if you feel one has gone bad, just change them both. With the repair you must do, you don’t want to repeat this in a few months to change the other one.

When you are sure the tank has emptied, can you replace it?

When you are sure the tank has now emptied you can begin the replacement.

How long does it take for a hot water tank to warm up?

Now you can go turn on the power to your hot water tank. You will notice within just a few minutes, your water is heating up. It shouldn’t take more than 20 minutes for your tank to be nice and warm.

Do you turn on water heater when it is full?

The water keeps them cool, so it’s imperative that they are submerged in water before you power them on. If you are not sure how to determine if it is full or not, turn on any hot water in your sink or tub. When steady water comes out instead of air, your tank is full.

How many volts does a water heater use?

At any one given time, there will be 240 volts of power flowing to your water heater. You should never even attempt to work on your water heater with power to it still connected.

Can a water heater flood a basement?

Replacing the element with the tank full of water and receiving more from the supply pipes will just flood your basement (or wherever you heater is). Some people do it but I would recommend it.

Diagnose problems With The Heating Element

It is quite easy to find out the fault in a heating element. If there is a constant flow of lukewarm water it can be because of defects in the upper heating element.

Testing A Heating Element

Before replacing a heating element it is important to test an electric water heater to avoid any shortcomings.

How to Remove A Stubborn Water Heater Element?

If by above testing you find out a fault in the heating element of your water heater then here is the time to go for its replacement. Now you need to remove that old faulty heater element with a new and better one.

How to Replace a Water Heater Element in a gas water heater

There is no need to change or replace the heating element in a gas water heater because a heating element is present in an electric water heater while a gas water heater uses a flame or gas burner for creating heat to warm water.

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