Rated 4.3 out of 5 by 56
Rated 3.0 out of 5.0 by Chris OK, but I had difficulty with intall leaks
Purchased unit after finding out it may extend the life of my hot water heater. Having plenty of room around my hwh, the intall was straight forward. I did have difficulty with the threaded fitting leaking. Used a pipe compound first, but that did not work. Drained my hwh, cleaned the pipe compound off and went with teflon tape. The leak changed to an occasional droplet that evaported before hitting the ground. I always worry about over tightening brass fittings. They should have a torque spec.
Watch a youtube video on intall. Be sure to check your home's water pressure before starting project so you can properly inflate the tank to the correct pressure. I ended up intalling my tank horizontally, and supported the weight with a strap.
August 11, 2015
Rated 5.0 out of 5.0 by jamr Solves relief valve leaks from hot water expansion.
After installing our new hot water heater (from Home Depot). I saw that when the tank heated the water, expansion of the water occurred, causing the relief valve to leak water.
I installed a water expansion tank and the problem was solved.
This also added a surprised second fix. . .. . the water pipes would knock when the toilets would shut off, this reduced that noise, sometimes eliminating it completely. . . cool.
Follow the directions, air the tank prior to installation, to what your water pressure is. . .
See the photo of our installation. . .as you scroll over the photo you will notice we were restricted on room - but it worked nicely.
February 13, 2013
Rated 5.0 out of 5.0 by Mark Easy install, worked as described
This purchase was made in conjunction with a new water heater. Code required this unit.
It was easy to install. You will need to purchase a $10 water pressure gauge with this product to insure you are pressurizing the unit to the correct PSI once installed. pressurized from the factory at 40 PSI, generally you will need to add air to the unit to equal the water pressure which usually runs about 60 PSI for the unit to perform as designed. Only add pressure when there is no water pressure on the tank.
June 7, 2016
Rated 5.0 out of 5.0 by RKLs Tidy Tank for Tough Location
This compact expansion tank was sized just right, to match our water pressure and heater tank size, while fitting into a low-overhead space. The packaging specifications helped to "remind" the plumber that a larger tank was not necessary.
May 25, 2015
Rated 5.0 out of 5.0 by Mike Good DIY repair for closed water system
After city water company made "updates" to our meter we started experiencing water coming from water heater T&P valve. Connecting water gauge to hose bib confirmed that after water heater turned off the water expanded from 60 lbs to over 100 lbs.
Sized tank according to our incoming water pressure and water heater size on the Watts website and installation went without problems. The night before installation, I pumped up the bladder to match incoming water pressure. Next day the tank was holding so I started installation. After repair, reconnected water gauge and ran hot water to force water heater to cut on. During water heater operation and after turning off the gauge stayed on 60 lbs of pressure. No more dripping from the T&P valve. Wish city water company would have told us that they were installing back flow device.
Be sure you measure incoming water pressure to be able to pressurize tank to the size.
April 6, 2015
Rated 5.0 out of 5.0 by Gary simple solution
Excellent information from Home Depot employee who happens to be a master plumber. He walked me through steps and even gathered parts. Water heater was leaking from pop off valve due to water expanding due to heating. Expansion tank gives the water "room to grow" and then relaxes when a valve is open
April 14, 2015
Rated 5.0 out of 5.0 by Joecool Get one of these or else replace your water heater every couple of years!
Get this expansion tank, install it ASAP and quit having to replace hot water tanks every couple of years... I have replaced 6 hot water tanks in 15 years all of which started to discharge rusty water or leak...
I did a Youtube search a bit ago and found the reason that my hot water tanks kept going out was because I have a backflow preventer that was installed when my new water service line was installed 15 years ago... Municipalities are now requiring a back flow preventer installed with new service lines, which is a great idea, but they don't tell you that when your hot water tank heats up, the pressure created by heating water has nowhere to expand thereby ruining your perfectly good hot water tank and putting added pressure on your plumbing throughout the entire house. This tank fixed the problem ASAP... Easy to install, just show the plumbing guy at Home Depot a pic of your plumbing and he will guide you as to which parts that you will need to get the job done. I had this in and installed in about two hours...
April 7, 2015
Rated 5.0 out of 5.0 by Hambone Easy installation
I was replacing our crawlspace electric water heater and decided to add this expansion tank as an improvement to the existing plumbing. One of our toilets used to run, and I believe this stopped it. Nevertheless, I'm sure it was worth it. And it took all of 15-20 minutes to install. Couldn't have been any easier!
March 28, 2016