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

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2answers
79 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
95 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
249 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 ...
4
votes
3answers
847 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 ...
3
votes
1answer
264 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 ...
3
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2answers
1k 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 ...
8
votes
1answer
303 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 ...
26
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4answers
15k 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 ...