Tankless water heaters offer many benefits. They are more energy efficient, since they only heat up the water you need, while conventional water heaters need to heat up all of the water it holds at once. Follow these tips from Matt Risinger of Risinger Build to make sure your tankless water heater lasts for many years.
Tankless water heater maintenance is the same whether the unit is indoors or out. The first thing to do is make sure your unit has isolation valves.
If not, they need to be installed by a plumber. They make maitence easier.
You’ll need to buy a submersible six horsepower pump, washer hoses and a descaling agent like vinegar. Turn off the power, water, and gas to the water heater. Hook the washer hoses up to the screws under the isolation valves. Turn the isolation valves on. Water might come out of the hoses. Attach the other end of one hose to the output of the pump. Pour one gallon of descaling agent into the bucket. Put the pump in the bucket.
Let the pump run for 45 minutes. The water heater is now descaled. Turn on the water. Run some water through the washer hose to fill the bucket to rinse the pump. Run the pump for a few minutes to rinse the vinegar out. Dismantle everything and turn the heater’s power and gas back on. This should be done every year.