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Water Heater Maintenance Video

by The Handyguys

in Appliance Repair, Plumbing, Video Podcasts

This video outlines a key component to water heater maintenance that is often overlooked, the expansion tank.

What does the expansion tank do?

The expansion tank will allow expanding water (water expands when it heats) a place to go.

Do you need one?

You need an expansion tank if you are on a water system with a back-flow preventer (a one way valve). If you are on city water and do not have a back-flow preventer you probably do not need an expansion tank. The city water system can absorb the expansion. Same with a well system.

Water Heater Maintenance on your expansion tank

Your expansion tank will have an outlet to connect up a pressure gauge. You can test the pressure at this port. It should match what your water pressure is set for. Watch the video for more details.

What problems you may have when your expansion tank fails?

If the expanding water has no place to go it could leak out of your system through the T&P valve.. If you expansion tank fails you can have leaks from the T&P relief valve, drippy faucets and faucet washers that wear out faster.

Water Heater Maintenance

{ 4 comments… read them below or add one }

Robert August 23, 2013 at 11:14 am

Another great video guys…very helpful!


The Handyguys August 23, 2013 at 11:58 am



Annice Taylor August 29, 2013 at 12:08 pm

Great video guys, just what I needed! Thanks!


Shawn February 26, 2014 at 1:26 am

This is a great tool. We are selling more and more properties that share common walls and everyone asks about these tanks. I’m going to post this on my own blog. Great info guys.


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