Apr 11, 2019

How to Maintain a Tankless Water Heater

You can get an endless supply of hot water from tankless water heater but you need to schedule routine maintenance care for the appliance to protect the appliance and fortunately, Mr. Rooter offers a budget-friendly and cost-saving, guaranteed tankless water heater maintenance servicing.

Descaling or flushing your tankless water heater is one of the regular maintenance services your appliance deserves. This should be done every 6-12 months depending on water hardness. It is important to flush the tank to remove scales that can damage the appliance. 

What are the Supplies You Need to Flush Your Tankless Water Heater?

You will need the 1/6 Horsepower Sump Pump, 3 gallons of distilled white vinegar, one 5-gallon bucket, 2-4ft lengths of hoses with the right fittings- you can find this at the local hardware store.  

Flush Your Tankless Water Heater

The first step you must take is to shut off the gas line or trip the circuit breaker, then remove the access panel or cover of the tank. Turn off the main water supply to the appliance, and release the pressure valve. 

Gently hookup one hose to the side of the inlet of the water heater, which is the point where cold water enters the tankless appliance. Connect the sump pump to the other end of the hose before submerging the pump inside the 5-gallon bucket that has been filled with 3 gallons of distilled vinegar. With the vinegar, you have created a closed-loop structure where the vinegar enters the tankless water heater and exits into the bucket before it is circulated back. Make sure the valve is opened before moving to the next step.

Once the hoses have been hooked to the water heater successfully, you can run your sump pump for about an hour and the vinegar will run through the pipe into the tank to remove the scales, lime and mineral buildup. Run fresh water into the tank to remove the vinegar after about 10 minutes of flushing. 

Once the whole process has been completed, simply shut off the pump and remove the hoses before closing the valves. Re-attach your water hose to the water heater, and turn on the circuit breaker or gas supply before turning the main water supply on. If you are having any difficulty following these steps, please contact us at Mr. Rooter.

Cleaning Water Filter Inside Tankless Water Heater

There are sediment screens in some tankless water heaters and they are used in preventing larger debris from getting to the heating units. You can easily clean these screens under running water or simply soak them inside white vinegar until all the debris are loosen. Pay attention to the location of the filter in the tankless water heater, the location usually depends on the type and brand of the tankless water appliance. 

If the process of flushing your water heater is quite difficult for you, we do advise that you don’t force it, please give us a call at Mr. Rooter to reuqest reliable water heater repair in your area, and our plumbers will attend to your needs. 



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