facebook pixel Water Heater Makes Noises | HomeTips
Select Page

Water Heater Makes Noises

Noises coming from a water heater can be caused by expanding and contracting metal parts; drips; or, more likely, minerals and hard water scale accumulations inside the tank or on an electric water heater’s heating elements. When heated, dissolved hard water minerals recrystallize and form scale that cakes onto interior surfaces, making the water heater less efficient and more likely to fail.

To minimize corrosive minerals through ionization, water heaters have a magnesium or aluminum anode rod, inserted through the top of the tank. To avoid scale in the first place, every few months flush out the tank. See Not Enough Hot Water for complete instructions on how to do this.

Here are some common water heater sounds you might hear:

Water heater pops, bangs, or gurgles

These sounds are caused by the buildup of hard water sediment heating up and exploding inside the tank. You can flush out the tank yourself, although by the time you’re hearing this sound the sediment chunks may be too large to pass through the drain valve. For more, please see How to Flush or Drain a Water Heater.

If you have an electric water heater, these sounds could indicate a buildup of scale on your heating elements; it may be time to replace these.

Water heater makes a boiling sound

If water sounds like it is boiling inside the tank, this could indicate overheating and a dangerous pressure buildup. Call a service professional immediately.

Featured Resource: Find a Local Pre-Screened Water Heater Pro

Call for free estimates from local pros now:
[telnumlink] 1-866-342-3263[/telnumlink]

About Don Vandervort
Author Image
Don Vandervort developed his expertise more than 30 years ago as Building Editor for both Sunset Books and Home Magazine. He has written more than 30 home improvement books and countless magazine articles. He appeared regularly on HGTV’s “The Fix,” and served as MSN’s home expert. Don founded HomeTips in 1996.

Related Posts:

Join the Conversation

Submit a Comment

Your email address will not be published. Required fields are marked *