Stop Water Pipes From Banging: Installing Washing Machine Water Hammer Arrestors

How to install a washing machine water hammer arrestor. Stop water distribution lines from rattling, shaking, or banging.
Oatey quiet pipes washing machine supply line shock absorber.
Sioux Chief Mini-Rester 3/4 in. x 3/4 in. FHT x MHT washing machine arrester.
𝗔𝗺𝗮𝘇𝗼𝗻 𝗔𝗳𝗳𝗶𝗹𝗶𝗮𝘁𝗲 𝗟𝗶𝗻𝗸𝘀
Water Hammer Arrestors: geni.us/bkJG6RW
Washing Machine Hoses: geni.us/djCw
Here's a list of some of the most common causes of water hammer and noises similar to water hammer.
1. Fast acting valves such as solenoid valves. Seen in dishwashers, washing machines, and fridges.
2. Excessive water pressure. Over 80 PSI
3. Backflow preventer or check valve installed on the water distribution line, causing an open water system to become closed. A expansion tank should be installed with the installation of a backflow preventer.
4. Shutoff valve not open fully. Common on toilets and sinks.
5. Faulty toilet fill valve
6. Faulty cartridge. Common on shower valves.
7. Water heaters with internal check valves
8. Potable water expansion tank bladder has ruptured or is waterlogged. If applicable.
𝗦𝘂𝗽𝗽𝗼𝗿𝘁
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[@scottntracyb123]

This really helped me as our plumber had installed these at the wall/water supply which I hear is quite common? It didn't help at all so when I saw your video that showed you install them at the washer, I moved them from the wall to the washer and 2 years worth of water hammer was immediately fixed! Thanks so much for sharing!

[@jlnapoleon]

I put arrestors on the water pipes and it persisted. plumber couldn’t solve it. 18 years later I see this glorious video. I’m sorry it took me months to come back and thank you I’ve been in disbelief it works on the back of the washer. I’m so grateful to you. I know it’s too much to ask you to solve my loud in the living room furnace/ac closet problem, if I figure it out I will definitely tell you as a payback.

[@derekalexander4030]

I have been living with water hammer since I got a new front loading washer about 4 months ago and have been stressing over what could happen to the joints but thought I had to do a major plumbing job to fix it because I didn’t know they had water hammer arrestors for the back of the washer. I have subscribed just to say thanks for letting us know.

[@justtinkering6713]

I used these for my washer. It fixed the problem, but they only last a year. Happened 3 times. I finally stopped the water hammer permanently by closing the valves halfway to the washer.

[@sharonmanetta7685]

i had no idea this was happening to other people. I thought my house was falling apart!! Thank you!!

[@73beetle19]

That’s funny I don’t care what they say!

[@RobertBeriault753]

Thank you. I didn't realise they could be installed directly on the machine.

[@GreatDrums.]

Thanks a lot for this! I had no idea this was why my pipes were banging away. Glad I found your video!

[@PROSDIY]

Glad the video was helpful! All the Best!

[@alneg6234]

before investing on a water hammer arrestor that has a lifetime of 1 year or so, try reducing the water pressure, easily done by closing the cold and hot water valves feeding the washer. this may increase the time it takes to fill the washer, but we are talking about few minutes. If you look further you will find that your house's water pressure service is higher than normal. it should be around 60 psi.

[@maryproveaux9200]

Fantastic idea!

[@Tinkerellastreasuretrunk]

Thank you also.

[@RecklessRcuk]

No good as the machine will pick up low water pressure

[@Robo-lf3xq]

I tried that and it worked for a while, but the banging eventually came back.

[@FromThisSoil]

The real tips are always in the comments. This solved my hammer issue by closing off the valve by about half. I’m still going to replace the arrester, though. Mine just screw in so it’s a quick job. Cheers.

[@KF-ke9mv]

Had a water hammer on my heating unit humidifier and the arrestor did the trick. It to had a solenoid valve . Thanks again.

[@PROSDIY]

That's a great point KF. I forgot to mention humidifiers as well. Glad a water hammer arrestor did the trick!

[@Javacai]

So helpful! The arrestor I bought have the wrong instruction!!!! The washer kept pounding, until today when I saw this video.

[@PROSDIY]

𝗔𝗺𝗮𝘇𝗼𝗻 𝗔𝗳𝗳𝗶𝗹𝗶𝗮𝘁𝗲 𝗟𝗶𝗻𝗸𝘀 Water Hammer Arrestors: geni.us/bkJG6RW Washing Machine Hoses: geni.us/djCw Disclosure: Pros DIY is an Amazon Associate. We earn a small commission from qualifying purchases through our affiliate links at no additional cost to you.

[@spanieaj]

I bought a new washing machine a few weeks ago. It did not take long for me to realize the solenoid valves in the washer were shutting off the water supply way too abruptly. The pipes in the house banged so loud, I was worried something might break. The banging got worse every time I used the washer. I was going to call my plumber to see if he had any recommendations. I also was worried it was going to damage the expansion tank. I found your video and thought I would give this fix a try since it was easy and relatively cheap to do. I installed the arrestors. It solved the hammer completely! Thank you! Thank you! Liked and subscribed!

[@peaceWorker77]

Did you installed to the washer machine like this way?

[@7239Matteo]

Worked like a charm. No more noise. Thanks.

[@PROSDIY]

Awesome! Nice job on your repair!

[@daibhiseaghdha153]

once I have fitted the hoses, and turned the water back on, I set the machine to " wash " just to " bleed " the air out of the hoses, so that you test for water leaks, other wise, it might not show., here in the UK there is only a cold feed, these days. great video, thanks, especially about been careful to avoid " cross threading " the connections, and not to over tighten.

[@Vfd6610]

Great video. Didn't know this product was available!!

[@Tinkerellastreasuretrunk]

What a great idea. I have terrible water hammer while the water is changing from hot to cold during my washing machine use. I will be looking for these. Or I can possibly ask my plumber. Thank you. I think I can benefit from these. And my dishwasher as well.

[@lexi7824]

VERY helpful!!!! Thank you so much for posting this 😊

[@sophietramel7573]

Thank you so much! I was able to do this successfully, no problems!

[@spicyhot1695]

Great video! Just what I need right now. Thanks for sharing

[@WatchRichRebuildsChannel]

Thank you for the video. It was very helpful.

[@carolynebourgon9275]

OMG my plumer didn"t do that when he came for the problem. Thanks so much, I 'll install these myself. :-)

[@ler3968]

I've been living with the horrible banging for several yrs, had no idea what to do about it...thx

[@DrewMather]

Thanks so much for this!🙏Great video!

[@JustSomeCanadianGuy]

I’m just glad I know what the name of this noise is now.

[@MsBaztastic]

Never heard anyone say what to look for (troubleshoot) on the machine hose. Good job.

[@73beetle19]

My wife said our pipes were making a noise for about a month while she’s washing clothes and I finally heard it today when I was in the shower. I’m going to see if I can find some hammer arrestors .

[@kimf.5409]

You are a jewel! Thanks!

[@rc2257]

Thanks, extremely helpful!

[@davidklein7210]

Perfect solution to my problem!! thx!!

[@GL2330]

these things are awesome! for the past year the pipes have sounded like they were going to shake themselves apart every time the new washer would close the valves, the hammer arrestors solved the problem 100%! even if they last only a few years like some say it's about $20 for two so just replace them. one thing to keep in mind is the gasket in the old lines has probably seated and may have a slow leak when reconnected like mine did, so get new gaskets or even better replace the lines when installing these.

[@PROSDIY]

Thanks for the comment and great advice on the washer! This information will definitely help anyone thinking about tackling this install. All the Best!

[@GL2330]

@@PROSDIY actually thank you! i bought them right after watching your video!

[@sqhuidsevehn6821]

This helped lessen the hammering sound heard from the main living room and behind the walls adjacent to stairs - however, after installing the 2 mini water arrestors - a new hammering sound can be heard from behind the walls of the shower on 2nd floor ....

[@TROdesigns]

Now YOU'LL have to get hammered not to here that jackhammering

[@evgenyapermekova8220]

Thank you so much for your video we been having hot water hammer so bad it makes sound like all the pipes are gonna come loose. Exited to try it out tomorrow hopefully can fix it

[@PROSDIY]

I hope it resolves the water hammer issue. Keep us posted!

[@kommoncents5853]

Can one use a potable lead free expansion tank (not the kind for boilers) as say a whole house hammer arrestor, or do they have to be located at the faucets or appliances ?

[@tlaicontact]

I recently installed 2 Oatey branded water hammer arrestors, just like yours on the video. I still have some banging; I am just wondering if the operative part (i.e. where the bladder and air cushion is) on the Oatey arrestor is too short? The operative part is 1 inch shorter than the Sioux Chief brand. What is your opinion?

[@wendypillatzki2836]

Thanks for the demonstration I will try this for my new washer

[@PROSDIY]

Thanks for the feedback Wendy. Hope it all goes well for you!

[@mireyadesantiago4252]

I've seen some applied it to the faucet handles are.. where do you suggest to place them??

[@hhaa7907]

Hello professor, from the instruction of Qatey, I screw Quiet Pipe to the valve not to the back of my washer. Then the pipe is still banging. So does it matter that where you screw the Quiet Pipe? Thanks.

[@anthonyvee]

Thank you kindly. Now i just need to figure out what size i need...I believe that there are various sizes..😀

[@allyf.4773]

What if the banging happens at the start of your load, as the washer fills, and again when it fills to rinse?

[@revup67]

We have hammer arrestors at the faucet side of our 4 year old front loading good quality washer, not at the washing machine ports as in your video. Have you solved the issue by putting in two sets of arrestors at the faucet and rear of washing machine? Do you believe by backing off the 1/4" turn valve and reducing intake flow might help? I've bled the system to the house by opening all faucets and no water shoots out in bursts. The issue occurs in both Cold and Hot Water and we are on a septic/well. The PSI at the lowest spigot is roughly 68 PSI which is necessary to run a Pressure Washer as it requires 3.5 GPS we get roughly 6 +/- GPM total. Plus 68 PSI is a good overall pressure to my knowledge. I can't say for sure but I believe the issue began after we had a plumber install a Whole House water filtration system as he had to re-run Pex but again this may be irrelevant. Good point about the abrupt action of the solenoid opening and closing. I do like the idea about disconnecting the connections at the washer and bleeding the lines just briefly however I wonder if this is a waste of time since I bled all faucets and toilets recently after a plumber replaced a tankless system. Thank you.

[@MrRato1951]

Good Job thank you

[@pd9116]

Thank you so much!!!

[@owl1873]

just picked up a set. I'll drop a after installation comment asap.

[@macster1457]

on mine.. I notice the pipes nonstop rattling while the washer is filling up using hot water... will this help with that?

[@hafcanadiana318]

I'm not sure the Oatey ones are ideal for my situation, because the W&D are in a relatively narrow hall/utility going to the garage. Every inch counts for getting the machines as close to the wall as possible. The Oateys may compromise that; are there versions with shorter extensions?

[@eugenepolan1750]

are there similar devices that are designed to work with dishwasher connections?

[@ClaudiaSandigo]

I have seen the hammer installed on the outlet not on the appliance. Does it matter where it is installed?

[@xrain099]

Should I connect the arrestor female end to the washing machine or the water outlet? Or either? You are connecting to machine, but I saw others connect to outlet.

[@jersal873]

It’s advised to install them directly to washer and not supply on/off valve?

[@quemeup]

I installed these a few years back and unfortunately they are not helping . I’ve installed exactly same as you. Would it matter if I tried them installed on the valves instead of the washing machine?

[@MurCurieux]

Great video! Wonder why appliance manufacturers don’t have these integrated into the product?

[@messywill]

Their products would last too long then /s

[@majorrgeek]

@MurCurieux - not having hammer arrestors fitted to w/m is not the problem, the manufacturers could make the w/m tap valves turn off softer or slower would remedy the problem

[@viridianahernandez8536]

I instaled a new washer, and my water line in my mobile home was broken almost every day, can help me if I install the water hammer?

[@Rojata19]

Does this work on pipes that are banging even though the washing machine isn't in use?

[@Drewboooo]

Won’t the metal on copper fittings create corrosion and damage?

[@joegabriel6001]

I’ve install these and it didn’t work for me. What would be the next thing to do? Install a water pressure reducer at the main ? Thanks

[@owl1873]

Im doing it. Right On!

[@n.s.3410]

probably overkill but.. would it be okay to add even more arrestors to the other end of the line at the wall?

[@azul4evermx66]

Wow l have 11 years in my house and has that terrible problem..( noise) until now got the answer to ( what's the f%==& noise)? Thank you so much.👉✌👍

[@Gaby83]

wait, you have HOT water going in your wasahing machine ??? how does it control the temperature if you wash coloured or white clothes ? with a mixing valve ...or ?

[@bshef3424]

our machines are in a closet and I can't afford adding 4-6" of more "depth" like these arrestors would do...I'm looking but can't seem to find a low-profile arrestor if they make them -

[@12Radius]

What's better brass or stainless steel please? your look brass here.

[@gailcrowe727]

I had terrible banging pipes for months, it turned out to be nothing more than the toilet cistern not filling correctly. A plumber put in a new valve, sorted.

[@stevenolsen6360]

i should saved the cost, by turning the taps to almost closed, so what if it takes a bit longer to fill the machine with water

[@arlenereid8919]

Pipes continue to bang after arrestor installed?

[@cizztv]

My laundry wall thumps when I flush the toilet 7 metres away. Where would you put the arrestor?

[@paulinelobbestael3206]

Do these ever wear out?

[@mr.boniato6402]

My pipes shake when someone is taking a shower or when using the washing machine.

[@kobezcarz4558]

Why do these only last a year?

[@Ukacip]

I have a problem with american standar td automatic toilet everytime it’s flushes the pipes above it shakes like banging noise

[@PROSDIY]

Sounds like water hammer to me. Most of these touchless or automatic toilets open and close the water supply with a fast acting solenoid valve, causing water hammer. A toilet water hammer arrestrr should do the trick: amzn.to/2EJK9R5

[@giulianopizzo3120]

Tried two sets of these. Leaks like crazy. After putting it on the inlet to the washer, it needs several additional turns. If i only turned it a 1/4 or 1/2 turn past hand tight, it would still be incredibly loose and would gush.

[@audreyl704]

maybe turn house water level down?

[@ralger]

Had same problem, I slipped an o ring under brass lip of lock down threaded collar with some plumbers grease and retightened , leak gone . BTW we have about 90 psi water pressure here so yeah I am setting taps only half way open now too ☝️

[@She_Tried_It]

I don't have the extra space to set my washer that far from the wall. Is there another option that doesn't require such a long horizontal extension? Won't be able to open the back door to garage of I have to move the washer forward to accommodate.

[@PROSDIY]

Are the shut off valves right behind the washing machine or off to the side? If they are off to the side the water hammer arrestors can be installed on the shut offs and not on the back of the washing machine and still function properly. If the shut offs are directly behind the washing machine and that option doesn't work, you could install the water hammer arrestors inline with the use of a male x male garden hose coupling and a short washing machine hose. A male x female washing machine hose would work as well. Let me know if you have any questions. Thanks! ⬇️Amazon Links⬇️ Male x Female Washing Machine Hose geni.us/Re09 Male X Male Hose Coupling geni.us/XFuRgWF 12" Washing Machine Hose geni.us/kC5H0 With the use of the options listed above the water hammer arrestor would hang behind the washing machine and still function properly.

[@richardc6932]

Does the manufacturer recommend that the arrest or be installed in a vertical position? The plumber installed mine at an angle, don’t know if it makes a difference. I see Shark Bite arrestors installed horizontal as well. In a recessed wall box vertical is the best way.

[@PROSDIY]

They will function properly in any orientation.

[@celticstephenhill]

Do you know if you can install multiple WHAs on the same line to double your protection?

[@maryproveaux9200]

Someone in the reviews on the home depot website who bought these did just that, connected two together on each side. I couldn't see, in the picture, exactly how they did that but I'm sure they can just be plumbed together?!

[@e.bad.9359]

So my problem is on the toilet, should I install one of these (noise stoppers) on the valve that connects to the toilet????.

[@PROSDIY]

You can install water hammer arrestors to the toilet's water supply if water hammer is the issue. If the water line is rattling or banging then a water hammer arrestor should fix it. If it is another type of noise maybe try these steps in this video: kzbin.info/www/bejne/a4e2e6mqq7KtfcU Please see the link below for the arrestors designed for toilets and sinks. ⬇️Amazon Link⬇️ Toilet Water Hammer Arrester geni.us/qg4BJ

[@ZteveW]

Is it okay for me to attach the arrestors to the shut off valves instead of the washer?

[@PROSDIY]

Yes, it will function properly on the washer side or the shut off side. Thank you for the question!

[@Kuya_Raf143]

Can someone answer regarding this. My Water arrester didnt fit at the back of my Maytag, instead i install to wall waterline horizontally because of the space is it okay or need to be vertically ???please help

[@frankchan5902]

I installed mine on the wall waterline outlets horizontally and they work perfectly. The waterlines don't even vibrate at all when my washer shuts the solenoid valve. Oatey actually recommend installing the arrestor at the wall outlet. Hope this helps.

[@kelh9329]

Can you place two hammers on each line? One on the washing machine and the other on the supply?

[@PROSDIY]

Hi Kel, You can install on both sides like you say, but usually one is sufficient. Thanks for the question.

[@trinhk]

My toilet was giving me that banging noise once the toilet bowl is filled. I tried adding one of these arrester there and it still doing it. 😒

[@bazajow]

Yesterday this hammer arrestor Sioux could not be fitted to my Miele washing machine as the inlet connector was covered up by Miele so rather than unscrew anything that I should not I reduced the water pressure by 1/4 of a turn. This has had the desired effect the hammer noise has been reduced to a rather softer and more pleasing sound. Time will tell is it is okay.

[@PROSDIY]

Do you have room to install them on the shut off valve side? The arrestors will also work installed there as well.

[@bazajow]

@@PROSDIY I have returned the arrestor and as I said before By slightly reducing the water pressure no one gets woken up in the night with banging. Happy with a bit of lateral thinking so far.

[@ayc9403]

Hi, is it uni-size or how do you figure what size do you need, thanx for the video but it makes me wanna buy some for connections in washing machine and bathroom sinks

[@PROSDIY]

For washing machines it will be a universal connection. 3/4" male/female hose connection. Same as a garden hose.

[@ayc9403]

@@PROSDIY THx man

[@rick-jw2fl]

What's the difference if I connect the arrestors directly to the water supply valves versus connecting directly to the washing machine?

[@PROSDIY]

There shouldn't be any noticeable difference by connecting it either way. It's just industry standard to install an arrestor as close to the source of the water hammer as possible. In the case of a washing machine it's the solenoid valves within the washer. That's why I personally install them at the washer if practical. That being said there's only a couple of feet of hose between the isolation valves and the washing machine connections, which shouldn't make a difference. Thanks for the question!

[@rick-jw2fl]

@@PROSDIY Thanks for the info!

[@frankmoyer4519]

what were you doing there in the beginning by turning machine on for few seconds?

[@PROSDIY]

Demonstrating the water hammer before the arrestors are installed. The hoses shake and the the hammer is heard through the copper pipes.

[@kurtklimbs]

So may pipes hammer really bad WHEN we are running a lot of water not suddenly when we shut them off. Thoughts?

[@PROSDIY]

Interesting. Could be a couple of things. 1. Too much pressure. Are you on city pressure or well? Some city zones have pressure reducing valves installed in the residences because the supply pressure is over 80 psi. If these valves fail it can cause rattling piping and prematurely worn out fixtures. Residential homes shouldn't exceed 80 psi and most are around 50 psi. 2. Faulty shower or faucet cartridge or toilet fill valve. Try running different fixtures and isolating one at a time to see if the sound changes or stops. 3. Piping that is deadheading. Water should flow through a Tee from the run to the branch(the tee part). If the water is flowing in the direction from the branch to the run it can cause unwanted noise. 4. Piping that isn't secured properly. Water lines should be well supported. Hopefully this gets you in the right direction. Good luck, and let me know how it goes. Thanks!

[@vidikat]

I must replace my old ones. The plumber had placed them at base of water, not on the washing machine itself. Shall I install the new ones on the washer, like you did? Does it matter? Thanks!

[@andrewhoffman2273]

Either way it’s up too you, directions on the product package has it installed at the shutoff valve. I placed mine on the washer directly since that’s the point where the resistance starts when the solenoids close.

[@vidikat]

@@andrewhoffman2273 Thanks so much Andrew. Earlier I called customer service at Sioux Chief and they also said either installation is fine. They also told me arrestors can installed be at any angle. 👍🏼

[@kt1220]

Didn't work on my LG. front load. It is just the hot water making the hammer noise. Should I try 2 arrestors, one at washing machine and one at the water source? In the meantime I reduced the hot water tap by a quarter turn and it dramatically reduced the noise. Is it sustainable leaving it that way? Thanks

[@PROSDIY]

It is fine to close the hot supply valve slightly as you did. I would probably have the main water pressure tested. It sounds like you might have excessive water pressure. Over 80 PSI is excessive and can cause water hammer and prematurely worn shower, faucet, and toilet valves and cartridges. 50-60 PSI is ideal. If one set of arrestors didn't work, I wouldn't install a second set. I would first check water pressure. If water pressure checks out being fine, I'd install a expansion tank on the cold water supply line to the water heater. This acts as water hammer arrestor for the whole house and is extremely effective in reducing/removing water hammer. Thanks for the question!

[@lukeloop]

My LG does the same, I had the water to the house tested and then LG said to get a technician and the technician said get a water arrestor but it still hammers but not as bad. They blame the pipes not the machine even though other washing machines do not do it. Do not get an LG as the shut off valves close very quickly and may cause hammering. I am annoyed to say the least.

[@pjf]

I don't know what pressure works on you country but here in my country I never isue those problems and I never see one of those hammer installed on any plumb system. I see another video where explain why to use those hammers but as I said, never see a leak or another problem I'd not used it.

[@PROSDIY]

Interesting. You're right that higher water pressures can effect water hammer. When I lived in Edmonton, Alberta our supplied water pressure was around 70 PSI which caused water hammer on our washing machine. Where I live now, I have a supplied water pressure of 50 PSI and have no water hammer and no need for water hammer arrestors.

[@TheGryxter]

Added arrestors about a year ago. Recently had floor replaced. Had to move washer. Now noticing hammering again. Is this because the hoses were disconnected? And if so does that mean the arrestors are toast or can I purge them somehow to make them work again? Thank you for a great video.

[@PROSDIY]

Thanks for the question. The newer model water hammer arrestors as shown in the video use a rubber or neoprene bladder to separate the water from the air cushion, and can't be purged. Shutting off the water to the washer and removing the hose takes the pressure off the neoprene bladder. When repressurizing sometimes the force of the water reentering the water hammer arrestor can damage the bladder, causing the water hammer to occur. This would be my best guess on what happened and would require replacements. Before replacing the water hammer arrestors I would try a few tests first. 1) When the washer is filling on a warm cycle, so that both the hot and cold are being used, lift the hoses in the back up as high as they will go. This can remove an airlock if one is present. 2) Run a cold only cycle followed by a hot only cycle. Listen to see if the water hammer occurs on one or the other, or both. If it happens on only one, switch the arrestors and try the same test again. This will confirm which arrestor may be at fault. Best of luck!

[@nanmckee54]

I just installed the hammer arrestors on my LG washing machine and my pipes are still banging. This is a brand new machine. Didn't happen with my old Electrolux. I think maybe the lines are too long??

[@chrisonthiaallthingsglam6624]

You need a rubber hose with wider distribution

[@wayahead1]

I had the water hammer arresters installed on my washing machine a few months ago. The banging noise in my wall stopped as well as the banging noise in my washing machine, however, the banging noise has now started again. Any suggestions? Thanks!

[@brendaludlow6405]

My machine is evil and compensates for whatever adjustments I make. The machine creates a water hammer after about 3 cycles. I put water hammer arrestors on both sides of the washing machine hoses. I closed the valves to nearly off. We drained all the water out of the home pipes and then refilled the house. We tried the inline water hammer arrestor. Nothing stops it. My LG can work around the fixes and start banging the pipes again. I regret buying it.

[@ralger]

I have LG machine too , great machine but even with these arrestors the pipes go bang bang ‼️ I’m going to see if opening taps only a quarter turn helps ☝️

[@AV-kc2ro]

My pipes still bang, what might be the cause?

[@AV-kc2ro]

So I noticed that my pipes were banging in the master bathroom, so I replaced the shower cartridge and the shower handle, and that fixed it; maybe it will help someone too

[@Ye.Ye._Hunter]

Make sure you re-connect the hoses in the correct place???? How about you just do one at a time. Can't mix it up then. But thanks for the well-done video. Now off to the Depot

[@PROSDIY]

That's a great point. That would work as well. Going back in time I probably would have just said that lol. Good information for anyone else though. Thanks 😀

[@lovepetbc]

Why the water hammer comes again 2 years later after the installation of the arestor ?

[@PROSDIY]

Hi Becky, Most water hammer arrestors use a rubber or neoprene bladder to separate the water from the air cushion. This air cushion is what absorbs the water hammer. If the bladder is ruptured the arrestor will fill with water and the air cushion will be lost, causing the water hammer to return. It sounds like you'll need to replace the water hammer arrestors. You can test which arrestor has failed by just running a cold only cycle then a hot only cycle and listening for which side causes the water hammer. I would recommend replacing both though, as once one fails the other is soon to follow. The life span varies greatly depending on factors like water pressure, water quality, usage, and quality of the valve. Thanks for the question! All the Best!

[@ralger]

@@PROSDIYfor $36 each they only last two years ? Yikes what a terrible design . I saw hydraulic arrestors that cost over $150 each are They any better ?

[@dalesworld1308]

Just put an LG washer in and BANG BANG BANG - I need a set of these.

[@SirRasor]

I tuned down the intake valve a little ....that's the cheapest solution :)

[@ralger]

LG makes a great machine I had my for 18 years but bang bang is always there with or without these arrestors they have the quickest solenoids in the west 👎‼️ bang bang is normal unfortunately a . I turned the feed taps down to almost input pressure and the pipes still bang.

[@stevenolsen6360]

please note I bought an arrestor that was too smal in the nut for the back of the washing machine

[@geraldblunt3837]

they worked on my washing machine. Now when I take a shower, the hammering is transferred to my shower. My shower head shakes when the washer changes cycle. Should I put two more on the shut off valves to the washer? should I put them all over the house? Does anyone have any ideas?

[@PROSDIY]

Hi Gerald, that is extremely unfortunate. Do you have high water pressure to the residence? Has the water hammer been happening for awhile or has it occurred recently? Water hammer that severe can indicate high water pressure, or having a check valve on the main water distribution line. I would recommend either adding water hammer arrestors to the shower supply lines, if accessible or adding a potable water expansion tank to the main cold water supply line. Adding an expansion tank usually fixes most homes with water hammer issues. It's basically a large water hammer arrestor.

[@MrPortwinestain]

Don't shower when your doing laundry.

[@JS-xr9ri]

What if the connections located on washer are vertical one on top of the other and not side by side as seen in your video, how then would you install the hammer arrestors ?

[@PROSDIY]

Hi J S, Thank you for the question. The water hammer arrestors will function in any orientation. On vertical stacked inlets I install both arrestors on roughly a 45 degree angle. I position the hose inlet (bottom) on the arrestor towards the hot and cold shut offs. This makes connecting the hoses easier. In the example I show the arrestors vertical, this is common trade practice when the option is available. Installing them on an angle will function properly as well. Cheers!

[@JS-xr9ri]

PROS DIY Thanks🙂

[@The52blocks]

Problem is. This is only for washing machine related water hammer. What do you do if you have water hammer when you flush the toilet for example and when the toilet fills up and valve shuts, there’s a hammer noise

[@PROSDIY]

There's water hammer arresters that are designed for toilets as well. 3/8" Toilet Water Hammer Arrestor Amazon Affiliate Link amzn.to/38Rbile

[@The52blocks]

@@PROSDIY can you use these on taps for basins or baths also?

[@PROSDIY]

@@The52blocks Absolutely. The one thing to look out for is that the shut off valve size and the water hammer arrestor size match. This will make installation much easier. Your basins, kitchen sink, and toilets should be 3/8".

[@yuvgotubekidding]

I've used the 2 sets of arrestors. 1 set behind the washer at the hose connection 1 set at at the other end of the hoses at the faucet connection, nothing. Plumber installed water pressure reduction valve and expansion tank at service line. $830. Pressure at 50, nothing. Tried pressure at redicously low 30, nothing. Banging as loud as ever. Now what?

[@PROSDIY]

That is extremely unfortunate and frustrating. Does the water hammer only occur with the washing machine, cold only, hot only, or both? You took all the proper steps that I'd take. Once I hear back from the questions I'll have a better idea. I'm leaning towards an issue with the washing machine because you went above and beyond to prevent against water hammer. Possibly a faulty solenoid valve, or debris in the solenoid valve. I've personally always have had an immediate fix to water hammer if a expansion tank was installed at the service line, as you've done. Try running this test. Hopefully you have 1/4 turn shut offs, because this test will work better. Turn off the water to the washing machine. Disconnect the hoses at the washing machine side. Test each side hot/cold separately. Run the hose into a bucket. Open the valve wide open and close as fast as possible. See if the water hammer occurs. If it doesn't, the issue is most likely with the washing machine. Let me know what you find out. Thanks for the question and good luck!

[@user-ok8ws1ls5b]

Is it best to put them on the valves by the wall or valves behind the washer?

[@akowned1]

and then how do you push your washer back in place with those giant fittings hanging off the back? i see you have 10 times more space your laundry than most...

[@PROSDIY]

If you don't have space to install the fittings, this option wouldn't work. Another option is installing a domestic expansion tank on the cold water supply in the mechanical room amzn.to/2LkBYx1. This acts as a water hammer arrestor for the entire residence.