One’s called a water hammer arrester-they’re basically two vertical pipes positioned directly above your water heater-or a water expansion tank that also is located directly above the water heater.Įither way, it equalizes that pressure and will quiet your water pipes down. For example, if the bathroom sink H and C are causing hammer, you'll want two arrestors, one on each of the H and C lines right there at the sink. But what you can do is have a plumber install one of two different types of systems to prevent that. So you'll want to install an arrestor near each point of use where shutting the water off is causing the hammer.

And it’s causing noise because the clamps that are holding the water pipes to the framing in your home are a little loose. What causes that is the pressure in the waterlines, which could be as high as 60-pounds-per-square-inch, is causing a little bit of movement because of the sudden flow, on or off.

I can’t stand that thump, thump sound you hear a lot of times when you turn a faucet on or off in your home.

Lighted Magnifying Glass That Stays Putĭanny Lipford: Racheal asks, “What causes the hammering sound in my water pipes when I turn on my kitchen sink?.

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