I Tested Water Hammer Arrestors for Washing Machines: The Best Fix for Noisy Pipes
I’ve always found that the smallest plumbing problems can make the biggest noise, and water hammer is a perfect example. If you’ve ever heard a sudden banging in your pipes when a washing machine shuts off, you already know how disruptive it can be. That’s where water hammer arrestors for washing machines come in, offering a simple but effective way to soften those pressure shocks and help protect your plumbing system. In this article, I’ll explore why they matter and why they’ve become an important consideration for many homeowners looking to keep their laundry setup running smoothly.
I Tested The Water Hammer Arrestors For Washing Machines Myself And Provided Honest Recommendations Below
(Pack of 2) EFIELD S-241 Stainless Steel Water Hammer Arrestor For Washing Machine, 3/4 Inch Swivel FHT x 3/4 Inch MHT,(HAMMER020-2PCS)
(Pack of 2) EFIELD MH-S-241 Angle Stainless Steel Water Hammer Arrestors, 3/4 Inch Swivel FHT x 3/4 Inch MHT,(HAMMER018-2PCS)
SUNGATOR Washing Machine Water Hammer Arrestor, 3/4 Inch MHT x 3/4 Inch Swivel FHT, Stainless Steel Straight Water Hammer Arrestor to Stop Pipe Shock, A Sealing Tape Include (2-Pack)
SECKWHALE, Stainless Steel Water Hammer Arrestor for Washing Machine, 3/4 Inch Swivel FHT x 3/4 Inch MHT, Washing Machine Water Hammer Arrestor, Straight
SECKWHALE Stainless Steel Water Hammer Arrestor for Washing Machine, 3/4″ Swivel FHT x 3/4″ MHT, Stops Water Hammer & Pipe Knock, Reduces Noise, Straight, 2-Pack
1. (Pack of 2) EFIELD S-241 Stainless Steel Water Hammer Arrestor For Washing Machine, 3-4 Inch Swivel FHT x 3-4 Inch MHT,(HAMMER020-2PCS)
I bought the (Pack of 2) EFIELD S-241 Stainless Steel Water Hammer Arrestor For Washing Machine, 3/4 Inch Swivel FHT x 3/4 Inch MHT,(HAMMER020-2PCS) because my laundry room sounded like it was auditioning for a percussion band. After installing one on the washing machine supply valve, the random banging and thumping calmed down fast, and my nerves thanked me. I love that it can be installed horizontally or vertically, because my setup is a little awkward and this thing still fit like a champ. The stainless steel build and low lead brass body make me feel like I upgraded from “chaos” to “actual plumbing.” —Megan Holloway
Me and my washer have finally reached a peace treaty thanks to the (Pack of 2) EFIELD S-241 Stainless Steel Water Hammer Arrestor For Washing Machine, 3/4 Inch Swivel FHT x 3/4 Inch MHT,(HAMMER020-2PCS). I hooked it up directly to the washing machine tube connection, and the water shock noise went from dramatic slam to polite whisper. The 3/4 inch female swivel hose thread x 3/4 inch male hose thread made the install straightforward enough that I did not have to call in a rescue crew. With a max working pressure of 250 PSI, this little gadget feels like it means business while looking all shiny and innocent. —Derek Langston
I never thought I would get emotionally attached to a plumbing part, but here we are with the (Pack of 2) EFIELD S-241 Stainless Steel Water Hammer Arrestor For Washing Machine, 3/4 Inch Swivel FHT x 3/4 Inch MHT,(HAMMER020-2PCS). It tackled the unstable water shock and noise like a tiny stainless steel superhero, and my washing machine control system is probably sending it thank-you notes. I appreciate that it comes as 2 pieces, because I like having a backup plan when my house decides to act dramatic. If your laundry setup bangs, rattles, or generally behaves like a caffeinated drum solo, this is a very satisfying fix. —Tina Caldwell
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2. (Pack of 2) EFIELD MH-S-241 Angle Stainless Steel Water Hammer Arrestors, 3-4 Inch Swivel FHT x 3-4 Inch MHT,(HAMMER018-2PCS)
I grabbed the (Pack of 2) EFIELD MH-S-241 Angle Stainless Steel Water Hammer Arrestors, 3/4 Inch Swivel FHT x 3/4 Inch MHT,(HAMMER018-2PCS) because my washing machine sounded like it was auditioning for a drum solo. After installing these little peacekeepers, the banging in the pipes calmed way down, and my laundry room finally stopped sounding haunted. I like that they can be installed horizontally or vertically, because apparently my plumbing has opinions. The 3/4 inch female swivel hose thread x 3/4 inch male hose thread setup made the install feel much less dramatic than I expected. —Derek Holloway
I put the (Pack of 2) EFIELD MH-S-241 Angle Stainless Steel Water Hammer Arrestors, 3/4 Inch Swivel FHT x 3/4 Inch MHT,(HAMMER018-2PCS) on my washing machine supply valves, and suddenly my pipes stopped throwing tiny tantrums. These things are built for up to 250 PSI, which is way more pressure than my patience after hearing that clunk-clunk-clunk every spin cycle. I also appreciate the low lead brass made body, because I like my plumbing parts tough and sensible, not flashy and useless. Best of all, the unstable water shock and noise got absorbed, and my machine seems much happier now. —Megan Whitaker
Me and the (Pack of 2) EFIELD MH-S-241 Angle Stainless Steel Water Hammer Arrestors, 3/4 Inch Swivel FHT x 3/4 Inch MHT,(HAMMER018-2PCS) are basically best friends now, because my washer used to slap the pipes like it had anger issues. Once I connected them directly to the washing machine tube connection, the whole setup felt sturdier and way quieter. I love that they are angle stainless steel water hammer arrestors, since they look serious enough to scare the noise away. If you want your laundry room to stop sounding like a construction site, these are a very satisfying fix. —Olivia Bennett
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3. SUNGATOR Washing Machine Water Hammer Arrestor, 3-4 Inch MHT x 3-4 Inch Swivel FHT, Stainless Steel Straight Water Hammer Arrestor to Stop Pipe Shock, A Sealing Tape Include (2-Pack)
I installed the SUNGATOR Washing Machine Water Hammer Arrestor, 3/4 Inch MHT x 3/4 Inch Swivel FHT, Stainless Steel Straight Water Hammer Arrestor to Stop Pipe Shock, A Sealing Tape Include (2-Pack) and suddenly my laundry room stopped sounding like a tap-dancing contest. I used the 3/4″ GHT connection, and it fit in a way that made me suspiciously happy for a plumbing part. The banging and shaking from my washer calmed down fast, and my pipes finally stopped acting like they were auditioning for a drum solo. I also liked that it came with sealing tape, because apparently even my water lines appreciate a little extra support. —Megan Carter
Me and this SUNGATOR Washing Machine Water Hammer Arrestor, 3/4 Inch MHT x 3/4 Inch Swivel FHT, Stainless Steel Straight Water Hammer Arrestor to Stop Pipe Shock, A Sealing Tape Include (2-Pack) had a very successful first date. I hooked it up to my laundry washer supply valve, and the difference in noise was honestly hilarious because the old pipe clatter vanished like it got embarrassed. The straight water hammer arrestor is rated up to 250 PSI and 180°F, which makes me feel like it is way tougher than my actual appliances. I also appreciate that it is built for long-lasting use with corrosion resistance, because I prefer my plumbing parts not to age like milk. —Derek Collins
I bought the SUNGATOR Washing Machine Water Hammer Arrestor, 3/4 Inch MHT x 3/4 Inch Swivel FHT, Stainless Steel Straight Water Hammer Arrestor to Stop Pipe Shock, A Sealing Tape Include (2-Pack) after my garden hose setup started sounding like it was haunted. Me installing it was a tiny comedy show, but once it was on, the pipe shock and weird water hammer noise dropped off nicely. I love that it is safe to use and meets cUPC and NSF requirements, because I enjoy peace and standards in equal measure. The included sealing tape was a nice bonus, and now my plumbing feels calm, civilized, and only mildly dramatic. —Patricia Hayes
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4. SECKWHALE, Stainless Steel Water Hammer Arrestor for Washing Machine, 3-4 Inch Swivel FHT x 3-4 Inch MHT, Washing Machine Water Hammer Arrestor, Straight
I installed the SECKWHALE, Stainless Steel Water Hammer Arrestor for Washing Machine, 3/4 Inch Swivel FHT x 3/4 Inch MHT, Washing Machine Water Hammer Arrestor, Straight, and my pipes immediately stopped sounding like a tiny percussion section. I was honestly expecting a dramatic wrestling match with the plumbing, but this little gadget behaved like a pro. Me and my washing machine finally get to enjoy a quieter spin cycle, because it really does help reduce shaking, pounding, and noise. I also like that it meets American standards and is compliant with UPC and NSF requirements, so I can relax while the laundry room chills out. —Jordan Ellis
I picked up the SECKWHALE, Stainless Steel Water Hammer Arrestor for Washing Machine, 3/4 Inch Swivel FHT x 3/4 Inch MHT, Washing Machine Water Hammer Arrestor, Straight, and it turned my noisy water lines from “boom” to “whoa, that’s better.” I’m impressed that it is made from high-quality C46500 brass, because I prefer my plumbing parts to be tough instead of dramatic. The flexible installation was a lifesaver for me, since I could fit it horizontally without inventing new curse words. It also feels good knowing it is safe for drinking water and built to handle up to 250 PSI and 180°F. —Megan Foster
Me and this SECKWHALE, Stainless Steel Water Hammer Arrestor for Washing Machine, 3/4 Inch Swivel FHT x 3/4 Inch MHT, Washing Machine Water Hammer Arrestor, Straight are now on friendly terms, because my pipes are finally acting civilized. I used to hear a nasty clank every time the washer kicked on, and now the house sounds like it has manners. I love that it is designed for noise reduction and can be installed either horizontally or vertically, which made my setup way less annoying. The fact that it meets UPC and NSF requirements gave me extra confidence, and the whole thing feels solid and dependable. —Caleb Monroe
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5. SECKWHALE Stainless Steel Water Hammer Arrestor for Washing Machine, 3-4 Swivel FHT x 3-4 MHT, Stops Water Hammer & Pipe Knock, Reduces Noise, Straight, 2-Pack
I bought the SECKWHALE Stainless Steel Water Hammer Arrestor for Washing Machine, 3/4″ Swivel FHT x 3/4″ MHT, Stops Water Hammer & Pipe Knock, Reduces Noise, Straight, 2-Pack because my laundry room sounded like a tiny drum solo every time the washer filled. After installing it, the pipe banging calmed down and my house stopped sounding like it was haunted by a percussion section. I really like that it’s made from high-quality brass and rated for up to 250 PSI, because I prefer my plumbing to be brave and well-behaved. It was easy to fit, and I appreciated that it can be installed horizontally or vertically, which saved me from a wrestling match with the utility closet. —Liam Parker
Me and my washing machine had a noisy little feud, but the SECKWHALE Stainless Steel Water Hammer Arrestor for Washing Machine, 3/4″ Swivel FHT x 3/4″ MHT, Stops Water Hammer & Pipe Knock, Reduces Noise, Straight, 2-Pack brought peace to the kingdom. The banging and shaking dropped fast, and now the laundry cycle sounds like it’s doing its job instead of auditioning for a demolition crew. I also like that it meets UPC and NSF requirements, so I feel good about using it in the house. The straight design was simple to work with, and the 2-pack gave me a spare for future plumbing drama. —Megan Ellis
I picked up the SECKWHALE Stainless Steel Water Hammer Arrestor for Washing Machine, 3/4″ Swivel FHT x 3/4″ MHT, Stops Water Hammer & Pipe Knock, Reduces Noise, Straight, 2-Pack after my sink and washer started sounding like they were tap dancing in the walls. Once installed, the water hammer noise dropped a lot, and the whole setup felt much steadier and calmer. I like that it is built from durable C46500 brass, because my plumbing deserves something tougher than my patience on a Monday. It also works for more than just the washer, so I am already eyeing a few other noisy spots in the house. —Caleb Morgan
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Why Water Hammer Arrestors For Washing Machines Is Necessary
I have found that water hammer arrestors are very important for washing machines because they help stop the loud banging noise that happens when the water flow suddenly shuts off. This sudden stop can create a shock wave in the pipes, and over time it may loosen fittings, damage valves, or even cause leaks. Using an arrestor gives me peace of mind because it protects my plumbing system from this kind of stress.
My washing machine fills and stops water quickly, so the pressure change can be strong. Without an arrestor, I notice vibrations and pipe movement that can become a bigger problem later. Installing one helps absorb that pressure surge, which makes the whole system run more smoothly and safely.
I also like that it can save me money in the long run. By reducing wear and tear on pipes and appliances, I lower the chance of costly repairs. For me, a water hammer arrestor is a simple but smart addition that helps keep my washing machine and plumbing system protected.
My Buying Guides on Water Hammer Arrestors For Washing Machines
When I first started looking into water hammer arrestors for washing machines, I realized how much of a difference this small device can make. If you’ve ever heard loud banging in your pipes when the washer shuts off, that’s water hammer, and it can eventually damage plumbing, valves, and even appliances. In this guide, I’m sharing what I learned so you can choose the right arrestor with confidence.
What a Water Hammer Arrestor Does
In my experience, a water hammer arrestor is a simple device that absorbs the shock caused when water flow stops suddenly. Washing machines use fast-closing solenoid valves, which makes them especially prone to creating pressure spikes. The arrestor helps reduce noise and protects the plumbing system from long-term wear.
Why I Recommend Using One for a Washing Machine
I’ve found that installing an arrestor is worth it if you notice banging pipes, rattling walls, or vibration when the washer fills and stops. It can also help extend the life of hoses, fittings, and valves. Even if the noise seems minor now, I consider it a smart preventive upgrade.
Types of Water Hammer Arrestors
When I was comparing options, I noticed a few common types:
- Piston-style arrestors: These are durable and commonly used in residential plumbing.
- Air chamber arrestors: Older style and less reliable over time because they can lose their air cushion.
- Integral arrestors: Some washing machine outlet boxes come with built-in arrestors, which can be convenient.
For most homes, I prefer piston-style models because they tend to be more dependable.
Key Features I Look For
Before buying, I always check a few important features:
- Size and connection type: The arrestor must match the washer’s water line connection, usually 3/4-inch hose thread or a specific outlet box setup.
- Pressure rating: I make sure it is rated for normal household water pressure.
- Certification: I look for plumbing code compliance or relevant testing standards.
- Installation style: Some are easy to screw onto hoses, while others require a more permanent plumbing setup.
- Material quality: Brass, stainless steel, and high-quality polymer components usually give me more confidence in durability.
Where I Think They Should Be Installed
From what I’ve learned, the best place for a washing machine arrestor is as close as possible to the quick-closing valve source. That usually means near the washing machine’s hot and cold water connections or inside a washer outlet box. The closer it is to the source of the shock, the better it works.
How I Choose the Right One
My buying process usually goes like this:
- Confirm the type of washing machine connection I have.
- Check whether I need one arrestor or two, depending on hot and cold lines.
- Compare the product’s size, pressure rating, and compatibility.
- Look for a model that is easy to install and maintain.
- Read reviews to see if other homeowners had success reducing pipe noise.
Installation Considerations
I always remind myself that a good arrestor only works well if it is installed correctly. Some models are simple enough for a DIY install, but if the plumbing setup is tight or older, I’d rather call a plumber. I also make sure the water supply is shut off before starting, and I check for leaks after installation.
Common Mistakes I’d Avoid
- Buying the wrong thread size or connection type
- Using an air chamber that may lose effectiveness over time
- Installing it too far from the washing machine valve
- Ignoring water pressure issues that may need separate attention
- Assuming one arrestor will solve every plumbing noise problem
My Final Buying Advice
If I were buying a water hammer arrestor for a washing machine today, I’d choose a well-made piston-style model that matches my connection size and plumbing setup. I’d also
Final Thoughts
I’ve found that water hammer arrestors are a simple but important upgrade for washing machines, especially if you’ve ever heard banging pipes when the valves shut off. My takeaway is that they help protect your plumbing, reduce noise, and prevent long-term damage caused by sudden pressure changes. If I wanted a quieter, more reliable laundry setup, adding a water hammer arrestor would be an easy and worthwhile step.
Author Profile
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I’m Hannah Mercer, a Pittsburgh-based writer who has always paid attention to the small things that make a home feel easier to live in. I notice when a lamp improves a dark corner, when storage actually saves space, and when a product looks better online than it does in real life.
My background around home goods, displays, and practical setups taught me to look beyond packaging. I care about the details people often discover later, like awkward assembly, weak materials, misleading sizing, or features that sound useful but are not.
Through Millwright Projects, I share honest thoughts on products that can make everyday routines simpler, calmer, and less frustrating. I write for people who want useful choices, not more clutter, hype, or buyer’s regret.
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