How to Replace Hot Water Heater Elements

Hot water heater elements will need to be replaced when there is no hot water, apparently less hot water or the hot water is taking longer to recover after showers, laundry, dishwashing or other demands on hot water. It is not difficult to replace a hot water heater element. Consult the documentation so you can purchase the right element for your hot water heater. If you do not have the documentation, write down the make and model information and take that information with you to a supply store. The store clerk will help you find the right element for your hot water heater.

Things You'll Need

• Hot water heater elements
• Element wrench or socket wrench
• Screwdriver
• Garden hose

Instructions

1. Turn off all power supply to the hot water heater. Turn off the cold water supply to the water heater. Attach a garden hose to the bottom spigot of the hot water heater and open the valve to drain the unit.

2. Hot water heaters typically have an upper and lower element. Open both control panels with a screwdriver. There will be insulation behind each panel. Fold the insulation out of the way; the elements and thermostats will be visible.
   Disconnect the wires from the element and remove the element. If the element is installed with a mounting plate, remove the bolts with a socket wrench. If the element is not installed with a mounting plate, remove with an element wrench.

3. Clean the gaskets and the gasket area on the hot water heater tank. Install the new elements by inserting them into the hole. Be sure the gaskets are tightly in place. If the element is installed with a mounting plate, tighten opposite diagonal bolts so the element stays straight in the tank. If the element is installed with an element wrench, use the element wrench to install the new elements.

4. Reconnect the wires for each element. Close the drain valve. Open the cold water supply. Do not turn the power supply back on yet. The tank must be filled completely before turning the power supply back on to the hot water heater. Open a hot water valve; the hot water faucet on a tub is a good option. When all trapped air has escaped and the water is flowing freely from the spigot without air bubbles, the power supply can be turned back on to the hot water heater. After filling, inspect the area around the elements for any signs of leaking. If everything looks good, reposition the insulation and replace the control panel access covers.

Tips & Warnings

• Purchase an additional element to have on hand to be able to replace the element as needed.

• Turn off electricity to the hot water heater or turn off gas to the hot water heater before servicing.

References

• Element Installation Instructions