Handy Tools

Tankless Water Heater Maintenance Tips

Oliwia Urban 

If you are one of the many people who enjoy the benefits of energy-efficient and on-demand hot water provided by tankless water heaters, then it is important that you give your unit the proper maintenance. Tankless water heater maintenance can help ensure your heater lasts for more than 20 years. In this article, we will provide you with some tips on how to perform proper maintenance on your tankless hot water heater.


Flushing the System

One of the most important aspects of tankless hot water heater maintenance is to flush the system. The tank should be flushed at least once a year to remove any mineral build-up that may have accumulated over time. This is especially important if you live in an area with hard water or if you keep the water temperature set high.

Mineral build-ups can damage the heat exchanger and reduce the efficiency of the tank, which can result in higher energy bills. Flushing the tankless hot water heater will remove all the mineral build-up, and prevent future damage. To flush the tank, you will need to make a mixture of vinegar water, have two lengths of hose, and a sump pump. Turn off all the power and water supply, then attach the hoses and use the sump pump to push the vinegar water into the heater. Flush with plain water afterward. You can find more detailed instructions in your user manual or purchase a descaling kit that comes with instructions. If you are not comfortable doing this yourself, call a professional plumber to perform tankless water heater maintenance for you.

Cleaning the Air Filter

Your tankless water heater has an air filter that should be cleaned regularly to ensure proper airflow. To clean the filter, remove it from the heater and use a soft brush to clean it with soap and water. Rinse well and let it dry completely before replacing it.

Cleaning the Water Filter


Your tankless water heater may also have a screen that helps trap sediment. To ensure proper functionality of your water heater, clean the water filter from time to time. Sediment accumulation can greatly restrict the function of your hot water heater. Cut off the water supply, remove the filter and clean it well. Use warm soapy water or wipe it down with a cloth. If you cannot find your water filter, refer to your user manual to determine its location.

Cleaning the Tank

Wipe down the outside of the tank to ensure no dust or debris build up on it. Cut off the power supply and water supply before doing this. Wipe down the tank and the surrounding area. A build-up of dust and debris can get into the water heater, which may cause issues.

When performing routine tankless water heater maintenance, be sure to inspect all aspects of the heater, including the heating elements, valves, and pipes, for leaks, rust, or anything that looks out of the ordinary. If you notice anything wrong, it is best to have it fixed as soon as possible to prevent further damage.

Proper tankless water heater maintenance will help ensure your unit operates efficiently and lasts for many years. If you are having any issues or prefer to have a professional handle your maintenance, contact E Dennis. They have many years of experience with tankless hot water heaters and can help ensure your unit functions properly for years to come.