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I have a boler heat system in my home. and the pipes are rattling and banging around i the basement when the heat kicks on. i wanted to know what that could be.

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You have either air in the pipes or not enough support for the pipes. You will never be able to eliminate all noise because pipes expand and contract each cycle but more support and less air in the pipes may help.

Posted on Dec 05, 2008

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Posted on Jan 02, 2017

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Random banging and whooshing sound


New water heater?
http://waterheatertimer.org/New-water-heater-making-noise.html
http://waterheatertimer.org/Repair-water-heater-valve.html
Water does not compress. So each faucet has air chamber located behind wall. Air chamber is usually just a vertical piece of pipe about 18" long with a cap so it never fills with water. When water flows... all the water back to the main supply begins to move toward the faucet. The weight of this water can be considerable. When faucet is turned off, the whole column of water suddenly stops, but weight of water is still pushing forward.
Without air chambers to cushion the sudden stop of water weight, the pipes bang and rattle. With air chambers, the weight of the water pushes up into the air chamber causing the air to compress, which silently cushions the weight of water, but also causes a push-back when water stops moving forward. The push back can then move water backwards where it compresses air inside another air chamber. So the water can slosh back and forth.
IF you have factory-installed heat traps on your water heater, these things have rubber baffles. The baffles hum and rattle and whistle and clog and cause strange sounds that carry through the pipes and water heater and wood joists etc. The water sloshing back and forth can move the baffles and cause noise.
Or maybe you have a check valve that has gotten loose.
Post question on pro water heater forum:
http://www.thetankatwaterheaterrescue.com/forums/forum3/
Add a comment and say what you discover

May 17, 2013 | Water Heaters

1 Answer

When i turn on the hot water tap the boiler starts to bang and rattle. doesnt do it with just the central heating on. please help


first check for loose pipes the you might want to add a damper on the pipe to absorb the hammering just t in a piece of pipe and make it go higher than the pipe with the noise and put a cap on topp of that

Mar 27, 2012 | Water Heaters

1 Answer

At the startup of every washing cycle the washer slams the water on and off and bangs around our pipes. I called in a plumber who said we could tear into the wall now or wait until a leak appears. No of...


Slamming of the pipes happens because of the water pressure and and the sudden opening of the water solenoid. The solenoid has to open suddenly as it is activated by a magnetic coil that pulls a plunger valve open. There is a spring (return spring) on the back of the plunger that compresses and gives the plunger a return power push to seat the plunger when the power is turned off. In the past few years, plumbers have been loosely connecting pipes in hangers so that they move with the change in water pressure so as not to bang and cause a noise that upsets the home owner. Also many homes are plumbed with plastic pipe that stops a lot of the pipe noise. Most washing machines and refrigerator ice makers that have water solenoids make some noise, but engineering has mitigated a lot of this with the return springs that have the strength to slow the action of the plunger in the solenoid, but yet open wide enough to allow full water inlet.

I suspect that your water pipes are not slung properly to mitigate the bang caused by sudden pressure drop, thus you most likely would get a pipe bang from any washers.You could try changing the solenoid in your washer on the premise that the return spring is weak, but this probably will not solve all of the problem. The banging is just upsetting and does no harm as it is a natural action.

You could test this out by hooking a garden hose to the water outlet at the washing machine and using a trigger release sprayer on the garden hose. When you trigger the garden hose, I suspect that you may hear a pipe bang.

May 19, 2011 | LG Washing Machines

2 Answers

A small intermittent water leak in the flapper flush valve unit which also causes "water hammer" in the copper piping in the basement. New flapper valves did not solve the problem Sanding...


Older Eljer toilets are good for this and yes you need to replace the complete flush valve assembly. I would recommend putting in a fluid master system as they in my opinion are the best. Their kits come complete with everything you need to do the job and provide excellent instructions and if that is not good they have videos on their web site. The site is slow to load but worth waiting for.

http://www.fluidmaster.com/

Mar 08, 2011 | Eljer Home

1 Answer

What could be causing a rattle in a standard, 2008


is the spare tire hanging under there? i had my spare come loose and was banging around under there, maybe a shock has gone bad!

Jan 11, 2010 | 2008 Chevrolet Hhr

1 Answer

Accelarating from 25 to 40 MPH - a "rattle" in exhaust system


Had my y-pipe replaced (bad cats) and the bolts at the y-pipe flange where it attaches to the exhaust manifolds started to get loose and I go tthe viberating (tinning) noise. Took it in the first time and they tightened everything up but it seems it's doing it again so I'm going to try to fix on my own. Just wondering how much of a pain it's going to be to get to the bolts and what size...

Jun 06, 2009 | 2007 Chevrolet Silverado 1500 2WD

1 Answer

Exhaust pipe rattles when car idles. Had muffler


Check the heat shield on the Catalytic Converter, after a few years they start to rust off and rattle. Crawl under the Pathfinder and bang along the Converter and muffler area and see where it's coming from.   Good chances are, it's from the heat shield since you already had everything changed from the Cat back.
Good luck and hope this helps.

May 11, 2009 | 2001 Nissan Pathfinder

1 Answer

Rattling when driving in reverse


It is likely the shield around the catalytic converter.

Apr 28, 2009 | 1998 Pontiac Trans

1 Answer

Loud noises, bangs and sounds like water falling


if it’s a banging sound--- I know one of the noises the system 2000 will make is a bang or rattle at the end of the run cycle, which we call "shudder stop". If this is your noise then I have to give you some bad news here. Sorry....... The only way of repairing this is by having your compressor replaced as it has to do with an internal problem in the compressor itself. There may be a silver lining, though, if you are the original purchaser and you have the receipt. Some of these systems came with a 10 year warranty on the compressor, so you might want to check this out.good luck

Dec 10, 2008 | Kelvinator 12 cu. ft. / 340 liter Chest...

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