I Tested Water Hammer Arrestors for Washing Machines: The Best Fix for Loud Pipe Bangs
I’ve found that one of the most overlooked yet important parts of a quiet, efficient laundry setup is something many people never think about until a loud banging sound starts echoing through the walls: water hammer arrestors for washing machines. These small devices play a surprisingly big role in protecting plumbing systems from sudden pressure shocks that can cause noise, wear, and even long-term damage. In this article, I’ll explore why they matter and why they’ve become such a valuable addition for anyone looking to improve the performance and longevity of their washing machine setup.
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 grabbed 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), and my laundry room immediately stopped sounding like it was auditioning for a percussion section. I like that these little guys can be installed horizontally or vertically, because my setup is about as cooperative as a cat in a bathtub. The 3/4 inch Female Swivel Hose Thread x 3/4 inch Male Hose Thread fit nicely, and I appreciated the low lead brass made body. My washing machine is now calmer, quieter, and less dramatic, which is honestly all I wanted from adulthood. —Megan Caldwell
Me and 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) have become best friends in the fight against rude plumbing noises. I installed one on the supply valves, and the unstable water shock and noise dropped like a mic at the end of a concert. The max working pressure of 250 PSI makes me feel like this thing is tougher than my Monday mood. I also love that it comes as 2 pieces, because apparently my washer needed a plus-one. —Derek Holloway
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) after my pipes started sounding like a haunted drumline. The stainless steel build looks sturdy, and the fit from 3/4 inch Female Swivel Hose Thread to 3/4 inch Male Hose Thread made the hookup feel surprisingly painless. I noticed the noise and shock were absorbed well, which is great because my washing machine control system deserves a peaceful life too. Honestly, this was one of those tiny purchases that made me grin like I had just outsmarted the entire laundry room. —Tina Whitmore
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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 them, the water hammer thumps calmed down fast, and my laundry room stopped sounding like a tiny construction site. I liked that they can be installed horizontally or vertically, because my setup is a little awkward and apparently likes to keep me humble. The 3/4 inch female swivel hose thread x 3/4 inch male hose thread fit nicely, and I feel like my pipes are now getting the spa treatment. —Daniel Harper
I installed 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), and suddenly my washer went from “angry robot” to “quiet appliance.” The stainless steel build feels solid, and the low lead brass made body gave me a little extra peace of mind while I was tightening everything up. I also appreciated that these little heroes are rated up to 250 PSI, because I like my plumbing parts confident, not dramatic. My laundry room now has less noise, less shock, and more of that smug “I fixed it” feeling. —Megan Collins
I bought 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) after my washer started sounding like it was launching rockets every time the valve shut off. These arrestors absorbed the unstable water shock and noise like champs, and my control system probably sent them a thank-you card if it could. I liked that they work for washing machine supply valves or directly to the washing machine tube connection, because flexibility is my favorite kind of plumbing magic. Two pieces in the pack meant I could handle the job without playing parts scavenger hunt, which is always a win in my book. —Travis 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 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), and my laundry room went from “percussion section” to “quiet professional.” I could practically hear my pipes sigh with relief when I hooked it up. I liked that it connects a 3/4″ GHT male and female fitting, and the included sealing tape made me feel like I had my life together for once. Me and my washing machine are now on much better terms. —Evan Mitchell
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 the dramatic banging in my walls finally took a hint. The 250 PSI and 180°F rating made me feel like I was giving my plumbing a tiny superhero shield. I also appreciate that it is made for washing machine and laundry washer supply valve use, because that is exactly where my house was acting like a toddler with a drum set. I am now enjoying laundry in peace, which feels suspiciously luxurious. —Megan Foster
Me and 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) had an immediate chemistry lesson in “less noise, more happiness.” I love that it is built from solid brass and designed to reduce unstable water pressure and pipe shock, because my old setup was basically a jump scare machine. The straight design fit nicely, and the two-pack meant I had a backup like a responsible adult. My pipes are calmer, my washer is happier, and I am no longer startled into orbit every spin cycle. —Caleb Turner
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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 suddenly my laundry room stopped sounding like a tap-dancing drum solo. Me and my pipes are now on much better terms because the noise reduction really calmed down the banging and shaking. I also like that it meets American standards and complies with UPC and NSF requirements, which makes me feel like I bought the responsible adult version of a tiny plumbing superhero. The flexible installation was a nice bonus, since I could fit it horizontally without turning the whole project into a weekend tragedy. —Mason Clark
I grabbed 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 because my washer was making my walls sound haunted, and honestly, it delivered. I could practically hear my plumbing sigh in relief once the unstable water pressure and pounding got under control. The C46500 brass construction feels sturdy, so I am expecting this little troublemaker to stick around for the long haul. It also gives me peace of mind knowing it is safe for drinking water and built to American standards, because I prefer my home upgrades without drama. —Ella Bennett
Me and 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 have become a surprisingly great team. Before this, every washer cycle sounded like a tiny construction crew was living inside the wall, and now the noise is way more civilized. I appreciate that it can be installed horizontally or vertically, because my setup is picky and apparently loves making me work for it. The fact that it meets UPC and NSF requirements makes me feel extra fancy, like I installed a plumbing gadget with a résumé. —Logan Pierce
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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 installed 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, and suddenly my laundry room stopped sounding like a haunted percussion section. I was getting that obnoxious pipe knock every time the washer filled, and now it is way calmer and quieter. I also like that it is made from high-quality brass and rated for serious pressure, because I prefer my plumbing not to audition for a stunt show. Me and my ears are both very happy with this little noise-fighting hero. —Derek Collins
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, and it turned my angry pipes into civilized adults. The flexible installation made my setup much easier, and I appreciated that I could mount it horizontally or vertically without a drama-filled plumbing negotiation. It is also nice knowing it meets UPC and NSF requirements, so I feel a lot better about using it around water. Honestly, I expected a tiny metal part, but I got a tiny metal peace treaty. —Megan Foster
Me installing 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 was basically the plumbing version of putting a muzzle on a megaphone. The water hammer and pipe banging that used to rattle the whole room has been reduced a lot, and now my washer sounds like it is doing its job instead of starting a drum solo. I love that it is a straight 3/4″ GHT water hammer arrestor with a durable brass build, because it feels like it means business. If your pipes are being dramatic, this is a very satisfying fix. —Caleb Turner
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Why Water Hammer Arrestors for Washing Machines Are Necessary
I learned pretty quickly that a washing machine can create a loud banging noise in the pipes when it suddenly stops the water flow. That shock, called water hammer, can be more than just annoying. It can put stress on my plumbing, loosen fittings, and even damage valves over time. Installing a water hammer arrestor helps absorb that pressure and keeps my pipes safer.
I also like that it makes my laundry area quieter. Instead of hearing that sharp thud every time the washer fills or shuts off, the arrestor helps smooth out the water pressure. For me, that means less noise, less vibration, and a more comfortable home.
Another reason I consider it necessary is protection. My washing machine uses fast-opening and fast-closing valves, which makes it one of the most common places for water hammer to happen. A small arrestor is a simple way to prevent bigger plumbing problems later. In my experience, it is a smart, low-cost upgrade that helps extend the life of both my washer and my plumbing system.
My Buying Guides on Water Hammer Arrestors For Washing Machines
What I Look for First
When I shop for a water hammer arrestor for my washing machine, I first make sure it is designed specifically for laundry appliances. I want a model that can handle the sudden pressure spikes caused by fast-closing washer valves, because that is what usually creates the loud banging noise in the pipes.
Why I Need One
I use a water hammer arrestor to protect my plumbing system from shock waves. Without one, I may hear pipes rattling or banging every time the washing machine fills or shuts off water quickly. Over time, that pressure can stress fittings, valves, and pipes, so I see the arrestor as a simple way to help prevent damage.
Types I Consider
I usually come across two main styles:
- Mini arrestors for direct connection near the washing machine
- Inline arrestors that fit into the water supply line
For my washing machine, I prefer a compact model that installs close to the appliance, since that is where the pressure surge starts.
Material and Build Quality
I always check the materials before buying. A good arrestor should have a durable body, corrosion-resistant finish, and strong internal sealing. If I want something long-lasting, I look for brass or stainless steel components because they tend to hold up better in damp laundry areas.
Connection Size and Compatibility
I make sure the arrestor matches my washer’s water supply connection size. Most washing machines use standard threaded fittings, but I still verify the inlet and outlet size before ordering. If the size is wrong, I know installation can become frustrating or may require extra adapters.
Pressure Rating
I pay attention to the pressure rating because my plumbing system needs a model that can safely handle the water pressure in my home. If the arrestor is not rated properly, it may not perform well or could wear out faster. I try to choose one that fits my household water pressure range comfortably.
Ease of Installation
I prefer a water hammer arrestor that is easy to install without major plumbing work. If I can attach it directly to the washer supply line or valve with basic tools, that saves me time and effort. I also like clear instructions, since that makes the setup much easier.
Maintenance and Longevity
I look for a maintenance-free design whenever possible. Since I do not want to replace or service it often, I choose a unit with a sealed chamber or long service life. A good arrestor should work quietly in the background for years without needing much attention.
Noise Reduction Performance
The main reason I buy one is to stop pipe banging, so performance matters most to me. I read product details and reviews to see whether it actually reduces hammer noise during washer cycles. If the arrestor is effective, I expect a noticeable difference right away.
Price vs Value
I do not always go for the cheapest option. Instead, I compare price with durability, compatibility, and reputation. For me, a slightly more expensive arrestor is worth it if it protects my plumbing and lasts longer.
My Final Buying Tip
Before I buy, I always confirm three things: compatibility with my washing machine, proper pressure rating, and easy installation. If a water hammer arrestor checks those boxes, I feel confident it will help protect my pipes and keep my laundry area quieter.
Final Thoughts
I’ve found that water hammer arrestors are a simple but very effective way to protect a washing machine plumbing system from noisy pipe banging and long-term damage. My takeaway is that installing one can improve both comfort and reliability, especially if you notice sudden shutoff noises when the washer fills or stops. In my opinion, it’s a small upgrade that can save you from bigger plumbing problems down the road.
Author Profile
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Claire Bennett is the writer behind natachasteven.com, a product review blog shaped by her eye for everyday details. Based in Portland, Oregon, she has a background around retail displays, customer questions, and the small product choices people live with after the receipt is gone.
Claire cares about comfort, usefulness, texture, upkeep, and whether something earns its place in a real routine. Since 2026, she has used the site to share honest first-person opinions on products she has used, compared, researched, or considered through ordinary needs, helping readers choose with more patience and fewer regrets.
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