What is Water-Hammering?

by Lee Wyatt
(last updated April 5, 2017)

What is "water-hammering"? This phrase is one that can sound pretty ominous, and can be a rather serious problem if it isn't fixed as quickly as possible. In simplest possible terms, water hammering is a phenomena that occurs when a shock wave is sent through the plumbing of your home due to the water and air interacting incorrectly when you turn the faucet off. Luckily, this is a term that refers to a very specific problem, and as such one that can be remedied rather easily.

  1. Locate and shut off main. The first step in being able to repair water hammering in your pipes, is to locate, and shut off the water main. Instead of turning off the water main at the street, you want to locate where the water line comes into your home. When you find that, turn the faucet control until the water is shut off (typically this is done by turning the knob clockwise).
  2. Empty all pipes. With the water turned off, you now need to empty out all of the pipes. This is rather simply done. Just go around your home, and turn all the water faucets on. This needs to be done in the kitchen, bathrooms, mudrooms, and anywhere you happen to have a water faucet. In addition, flush all the toilets to empty their tanks and the water lines in them as well. When you have done that, turn the faucets off. Wait a couple of minutes, and then repeat the process to ensure that all the lines are completely empty.
  3. Restart the water. After ensuring that all the faucets have been turned off, turn the water main back on. Go to a faucet in the uppermost section of your home, and then turn it on. Allow it to run for several minutes until all the air that is in the lines has been pushed out, and then turn the faucet off. Repeat the process for every faucet that you have in the home, as well as the toilets.
  4. Check your work. When you have finished restoring water to the faucets in your home, it is time to actually check the work. This can be done in a couple of ways. The first (and easiest) is to turn a faucet on all the way, and then turning it back off as quickly as possible. In addition, you can also flush your toilet a few times, running the dishwasher, or even the washing machine. If there is a repeat of the hammering, you will want to repeat the process again,

Generally speaking, this procedure should take care of the vast majority of water hammering issues. That being said, there may be times when this won't do the trick. In those situations you may need to replace the pressure control valve, or even the pipes themselves. Before you begin tackling a project like that though, you should get a second opinion from a plumber to see if they can fix the problem without having to do anything drastic.

Author Bio

Lee Wyatt

Contributor of numerous Tips.Net articles, Lee Wyatt is quickly becoming a regular "Jack of all trades." He is currently an independent contractor specializing in writing and editing. Contact him today for all of your writing and editing needs! Click here to contact. ...

MORE FROM LEE

Green Coffee

In this day an age of increasing environmental concern, we are easily finding out that there is no part of our lives that ...

Discover More

Adding a Circuit

Are you in need of a little extra power in your home? Instead of using unsafe methods to add more sockets or plugs to an ...

Discover More

Do Fog Lights Really Help in Fog?

Fog lights have become an increasingly common piece of equipment on just about every kind of four wheel vehicle there is over ...

Discover More

MAX Power! A powerful lithium-ion drill/driver that delivers 0-to-650 RPM and 115 inches-per-pound of torque in a lightweight, easy-to-use package. An anti-slip soft grip and LED worklight makes this tool a delight to use. Check out Black & Decker 20-Volt Cordless Drill/Driver today!

More Home Improvement Tips

Replacing a Toilet Fill Valve

Everyone has a problem with their toilet once in a while. Instead of calling an expensive plumber or repair man to come out ...

Discover More

Dealing with Low Water Pressure

Dealing with low water pressure doesn't necessarily mean that you have to hire an expensive plumber. Rather, what you need to ...

Discover More

Winterizing a Hot Tub

Improperly shutting down your hot tub for the season can ruin an expensive investment. Most people should call a professional ...

Discover More
Subscribe

FREE SERVICE: Receive an e-mail several times each week with a featured home improvement tip. Enter your address and click "Subscribe."

Comments

If you would like to add an image to your comment (not an avatar, but an image to help in making the point of your comment), include the characters [{fig}] in your comment text. You’ll be prompted to upload your image when you submit the comment. Images larger than 600px wide or 1000px tall will be reduced. Up to three images may be included in a comment. All images are subject to review. Commenting privileges may be curtailed if inappropriate images are posted.

What is four less than 6?

There are currently no comments for this tip. (Be the first to leave your comment—just use the simple form above!)


Subscribe

FREE SERVICE: Receive an e-mail several times each week with a featured home improvement tip. Enter your address and click "Subscribe."

(Your e-mail address is not shared with anyone, ever.)