How to Quiet Pipes With a Water Hammer Arrestor | This Old House

Does it matter how close/far you install this to the facets thats causing the air hammers?

Amazing

I have an Ever Hot hot water dispenser at my kitchen sink. How do I get rid of a water hammer on this thing?

Bet he turned the main water off before cutting those pipes 😜

Access panel? How convenient.

It doesn't hurt to write a date on them. Applies to furnace filter, anode rod too

TWO Pressure Regulator Values... that's what causes water hammers. Remove one, problem solved.

I ordered some to connect to the washing machine connection as when I put a new valve on the machine it started to bang. I assume because the new valve closes faster than the old one did. Is there any style better than another? Nothing else bangs in my house plumbing wise…

When those fail, drywall has to be cut again!

- "Hey, you think I need a shutoff back there just in case of emergency? The wife hates going down baseme..."

"Stop..... It's hammer time....🦹🦹🦹

Can those be placed anywhere in the house or do they have to go close to where the sound is coming from?

Plumber's resolution is not representative to average home - how many houses have an access panel? One in a million? Plumber has practical experience but zero common sense on how others can benefit from this demo. It has been a waste of time for me.

Oh how convenient an access panel

lol. that noise is nothing compared to mine, and I don't even do it as I live in a unit in the same house with 3 other people. If they close the tap quickly, I get hammered 3 metres from where I usually sit and the noise is similar to someone bashing on my window. 8 months later and its so annoying, and my landlord has tried fixing it using a plumber but it still occurs. So annoying !

I have had to replace my piston type anti-hammer device periodically, can't remember exactly, may be every 4 to 6 years. However I have now found out the device (piston type) can be repaired, here is how:
1. After removing, drill a small hole. in the center of the end. (#21 drill for a #10 sheet metal screw)
2. Insert a thin rod through the whole and push the piston all the way back. (The piston has bottomed out, that is why it's not working anymore.)
3. I sealed the hole with # 10 sheet metal screw and a rubber and metal washer. It has been working fine for some time now. (Or you can try to seal the hole with two-part epoxy, let epoxy fully cure. If epoxy fails the piston will prevent water from leaking out!)
4. Reinstall.

I have a two story home with multiple sinks, toilets and showers. Each and everyone one them makes the hammer noise. What is the solution? I do believe there is some type of arrestor in the garage with an on and off lever. What is the solution?

I live in an apartment and sleep right next to a panel just like this in my second bedroom. The tapping is so annoying and have warned the owner about this, but he's done nothing. Glad I have renter's insurance and hope he does too.

Do these parts have to be replaced periodically? esp. the rubber bladder ones?

The bible of maintenance 🙏

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