Finding and fixing the causes of water hammer, a shuddering, knocking or banging noise in water pipes.

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1answer
29 views

Laundry box and water hammer arrestor

I am trying to install my new washer & dryer combo. There are a few things that I am not sure since plumbing hardware and markings are a bit different in the US compared to once I used in Russia. ...
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1answer
40 views

Why is my water softener hammering during recharge?

My water softener is water hammering during recharge. Any thoughts on what might need to be fixed?
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1answer
74 views

How can I get rid of the knocking sound behind my wall when I turn any tap in the house on or off?

When we turn any of our taps on or off it creates a set pattern of three knocks behind the main bedroom wall. We have a steel framed house. How can we eliminate this sound?
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1answer
153 views

Water hammer or something else?

I'm having a bit of a mysterious problem. A couple of weeks ago I've replaced a dimmer switch in the upstairs bathroom. Of course while working on that I shut off the electricity for that part of the ...
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0answers
31 views

How to replace an arrester behind the valve

My water arrester is in my wall box for my hook-up on my washer but the water valve is in front of it. So the valve is blocking access to the arrester and the arrester is blocking me from taking the ...
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2answers
1k views

Loud noise in the pipes when I turn off my hot water

We have a combi boiler, and recently when you run the shower after turning the hot tap off there is a large banging in the pipes. It only seems to happen with that specific tap (as far as I can tell). ...
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2answers
1k views

Why does the washing machine cause water hammer in the pipes in my bathroom?

We recently replaced the valve in our bathtub/shower as hot water would not go to the shower faucet. Now every time the washing machine fills (located downstairs other side of house), the pipes bang ...
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2answers
2k views

How can I locate and eliminate mysterious water hammer related to humidifier?

In the morning, early, when my thermostat kicks back up, I hear a banging/rattle sound that I've determined is related to my humidifier. It only lasts about 10 seconds so by the time I get down to the ...
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3answers
4k views

How can I stop the loud banging sound in my water pipes when using my clothes washer?

We just bought a townhome and every time we use the LG Front loading washing machine there is a loud bang throughout the pipe system. I checked the back and there are already 2 water hammer arrestors ...
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1answer
589 views

Why does my Rinnai Infinity water heater fire up after turning off the cold tap?

I have a Rinnai Infinity XR20. It's about 3 years old. I've just recently noticed a peculiar issue with it that I hadn't noticed before. If I turn on a cold tap like the one to the garden hose and ...
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3answers
4k views

What causes hammering from a new diverter when other faucets are quickly turned on and off?

We're doing a minor remodel of our master bathroom, and I have replaced the 30+ year old diverter and nearby pipe with a new one from Delta. Now when any faucet in the house is turned on and off ...
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1answer
536 views

Can I reduce or eliminate water hammer without plumbing?

I have a friend who lives in an apartment with terrible water hammer problems which the management is unwilling to fix. I'm curious if there is a product or device that would attach, for instance, to ...
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4answers
32k views

How do I fix a “water hammer” problem?

When I shut off a water faucet or right after the toilet tank refills after flushing, I hear a vibrating sound in my pipes. It last between one and two seconds. On the interwebs, I found out that ...