It may not happen very often, but there will be times in which homeowners will need to make repairs to their tankless water heater, and that can sometimes mean replacing an element of the water heater that has malfunctioned. Most people don't even think about their water heaters until something goes wrong, but if you start to notice a drop in water pressure or any kind of temperature decreases then that’s a clear sign that you need to get the heater checked out.

We’re very lucky to have teamed up with a Water Heater Repair bountiful ut specialist to help collaborate with our writers on these necessary steps towards making any kind of repairs to a tankless water heater. This is definitely something that every owner of these water tanks should know about because you can end up saving a ton of money by doing a DIY project when calling in a professional isn’t quite necessary.

Step #1: Turning the Power Off

The very first thing you should do just like when repairing all sorts of plumbing problems is to turn the electrical power off through the breaker box or control panel. You’ll also want to double check through the volt meter even after the electricity has been signaled ‘off’ just to be safe, and this will just be an extra assurance that the breaker has been shut off.

Step #2: Opening Up the Warm Water

When you do this while simultaneously turning off the water supply you’ll end up being able to siphon out most if not all of the water from the water heater, which will then make the next step possible.

Step #3: Drain the Water Heater

This may include unscrewing about six screws from the bottom or underside of the heating chamber plate, and then of course letting the water drain out into a bucket you have handy. This will then provide the homeowner with an opportunity to clean out the plate at the bottom of the water tank that sometimes builds up with sediment.

Step #4: Remove all Wires

This step can be really important for other types of safety precautions, and it essentially comprises of removing and securing all of the black and red wires from the heating elements of the tankless water heater.

Step #5: Remove the Old Element(s)

This is where you’ll end up using some kind of adjustable wrench to effectively loosen the heating elements, and when you are doing this you should be careful not to drip any water on the control board! Then you will remove the O-Ring and heating element from the water heater.

Step #6: Seat New O-Ring

When you are doing this one of the most important things you need to take into consideration is that the O-ring needs to be seated 100% properly within the new heating element. Once these are assembled you can install them back into the heater, but just make sure that it’s all tightened snuggly!

Step #7: Replacing all of the wires

This is where you’ll put the black and red wires that you previously removed back on top of the heating element using a screwdriver and screws. Pretty simple here.

Step #8: Turn the Water Supply back On

There are a few things you are going to want to double check before you turn the water back on, and one of the main things to double check is that the drain plug screws are fastened properly.

Step #9: Make Sure the Control Board is Dry

The control board needs to stay dry at all costs, so if something goes awry and if it does end up getting wet then you should use a hair dryer on the front and back of it. The control board is such a vital part of any tankless water heater so it really can’t be jeopardized.

Step #10: Fill the Tank Back Up and Heat the Water Again!

When you’re doing this you need to simply make sure that there are no leaks coming out of the water heater, and if you are confident there will be no leaks then you should be good to turn it back on!