- Other Rooms
- Lawn & Garden
- Deck & Patio
- Repair & Install
Problem with Noise from Tankless Hot Water HeaterBy: Danny Lipford
I have sounds coming from our tankless water heater. Should I be concerned? -Nora
Gas tankless hot water heaters all make noise when firing up and heating water, but the levels are usually less than 90 decibels. A decibel meter can be used to find out how loud your tankless water heater actually is. If you have a smartphone, you can download a free decibel meter app called SoundLevel and measure the decibel output yourself.
If the noise occurs when hot water isn’t being used, there’s a good chance that another source is siphoning water from the line and creating a vacuum. If you hear a weird groaning sound from the pipes or the tankless hot water heater when you flush the toilet, that could be the culprit.
Even though a toilet only uses cold water, I have seen some toilets do this. In that case, you need to have a plumber install a check valve in the water line.
Good luck with your project,
- Tankless Water Heaters (video)
- How to Choose a Hot Water Heater (article)
- Energy Efficient Tankless Water Heaters for Your Home (video)
- Is Water from a Tankless Hot Water Heater Hot Enough (article)
Please Leave a Comment
One Comment on “Problem with Noise from Tankless Hot Water Heater”
You can follow comments to this article by subscribing to the RSS news feed with your favorite feed reader.
We want to hear from you! In addition to posting comments on articles and videos, you can also send your comments and questions to us on our contact page or at (800) 946-4420. While we can't answer them all, we may use your question on our Today's Homeowner radio or TV show, or online at todayshomeowner.com.