The best water arrestor washing machine creates a vital barrier against unexpected floods, safeguarding homes from costly water damage and ensuring peace of mind, especially for busy households. Choosing wisely among the myriad options available is crucial, as an incompatible or poorly performing unit can lead to frustrating leaks, reduced appliance lifespan, and the very water damage you sought to prevent. Different arrestors offer varying flow rates, material durability, and installation complexities, directly impacting both initial setup ease and long-term reliability.
A suboptimal choice might not adequately handle pressure surges, leaving your laundry room vulnerable when you least expect it. To help you make an informed decision and ensure your appliance and home are protected, we’ve curated a list of the top contenders.
Discover the perfect solution for your needs below.
For a washing machine, the best water arrestor washing machine is typically a 3/4-inch model made of stainless steel that connects directly to the water supply line. These arrestors, such as the Stainless Steel Water Hammer Arrestor for Washing Machine, 3/4 Swivel or the EFIELD S-241, absorb shock and reduce noise by preventing water hammer. They feature standard 3/4-inch hose threads for easy installation and operate effectively at pressures up to 250 PSI.
Best Water Arrestor Washing Machine: Top Picks Compared
| Image | Product | Buy |
|---|---|---|
Best Pick 1  | Stainless Steel Water Hammer Arrestor for Washing Machine, 3/4″ Swivel Best for: Durable stainless build | Check Price |
Best Pick 2  | (Pack of 2) EFIELD S-241 Stainless Steel Water Hammer Arrestor Best for: Twin pack defense | Check Price |
Best Pick 3  | Sioux Chief 660-HB Water Hammer Hose Arrestor, 3/4-Inch Best for: Hose thread connection | Check Price |
Best Pick 4  | TTFLEX Stainless Steel Water Hammer Arrestor 3/4 Inch Swivel FHT Best for: Flexible swivel fitting | Check Price |
Best Pick 5  | (2 Pack) Lidertik Water Hammer Arrestor Washing Machine 3/4 Absorb Best for: Absorbent action | Check Price |
How We Picked
To determine the best water arrestor washing machine solutions, we prioritized build quality and real-world performance. We focused on arrestors with robust stainless steel construction, capable of handling standard household water pressures up to 250 PSI, and ensuring reliable shock absorption. Products featuring easy installation, like swivel hose connections, and those designed specifically for washing machines were favored.
We ruled out generic plumbing parts less suited for the specific demands of appliance use and focused on durability and safety. Devices offering significant noise reduction and pipe protection were strongly considered, leading to our curated selection.
What Most Buyers Get Wrong
Connection Sizes: The Universal Language
When choosing a washing machine water hammer arrestor, the connection size is paramount. Most standard US washing machine hoses and valves use a 3/4-inch GHT (Garden Hose Thread). Look for options like the Stainless Steel Water Hammer Arrestor (1), TTFLEX Stainless Steel Water Hammer Arrestor (4), and the Washing Machine Water Hammer Arrestor (6), which clearly state 3/4 connections.
Incorrect sizing will prevent installation, rendering even the best arrestor useless for your appliance.
Straight vs. Swivel: Fitting into Tight Spaces
Consider how you’ll connect the arrestor. Some washes have limited space behind them. Swivel connections, as seen on the Stainless Steel Water Hammer Arrestor (1) and TTFLEX Stainless Steel Water Hammer Arrestor (4), offer more flexibility and can make installation easier in confined areas.
Straight connections, like those on the Sioux Chief 660-HB (3), are also effective but might require more maneuvering depending on your specific plumbing setup.
1. Stainless Steel Water Hammer Arrestor for Washing Machine, 3/4″ Swivel
Best for: High-pressure durability.
With a maximum working pressure of 250 PSI and rated for up to 180°F, this C46500 brass arrestor stops pipe shaking and pounding effectively. Its 3/4″ GHT swivel connection ensures a secure fit. This robust design is built for consistent performance.
Each arrestor in this 2-piece set features a 3/4″ GHT Male and 3/4″ GHT Female connection, facilitating simple integration with your washing machine’s water supply. The high-quality C46500 brass construction provides exceptional corrosion and abrasion resistance, promoting longevity.
Pros
- 250 PSI maximum working pressure
- 180°F temperature rating
- C46500 brass for corrosion resistance
- Reduces water pressure instability and noise
Cons
- Requires a 3/4″ GHT connection, limiting compatibility with non-standard fittings.
For homeowners dealing with noticeable pipe banging during washing machine cycles, this 2-pack offers a durable brass solution. Ensure your plumbing uses standard 3/4″ GHT fittings for easy installation and reliable water hammer suppression.
2. (Pack of 2) EFIELD S-241 Stainless Steel Water Hammer Arrestor
Best for: Versatile installation, quiet operation.
This 2-piece set of stainless steel water hammer arrestors accommodates 3/4 inch connections and can be installed horizontally or vertically. The design effectively absorbs water shock, protecting your washing machine’s control system and reducing disruptive noise.
Each arrestor features a 3/4″ female swivel hose thread connecting to a 3/4″ male hose thread. With a maximum working pressure of 250 PSI, these arrestors are engineered to manage significant water flow fluctuations and the associated impacts, ensuring quieter operation.
Pros
- Can be installed horizontally or vertically
- 3/4″ FHT x 3/4″ MHT connections
- Maximum working pressure of 250 PSI
- Low lead brass body construction
Cons
- The low lead brass body might be a consideration for those seeking entirely lead-free components.
Homeowners experiencing noisy water hammer during washing machine cycles will find this 2-pack a practical choice. Its flexible installation options make it suitable for various plumbing configurations.
3. Sioux Chief 660-HB Water Hammer Hose Arrestor, 3/4-Inch
Best for: Retrofit and PEX system compatibility.
Designed for seamless integration, this Sioux Chief arrestor features a straight compression design for easy retrofitting onto 1/2″ nominal copper legs or risers. Its compatibility extends to push-fitting systems like Viega ProPress, offering broad application.
With an outside diameter of 0.75 inches and a nominal wall thickness of 0.5 inches, this arrestor is compact yet effective. It installs on 1/2″ nominal copper or is compatible with press-fitting and push-fitting systems, simplifying upgrades.
Pros
- Retrofits 1/2″ copper leg or riser
- Compatible with Viega ProPress
- Works with all push-fitting systems
- Compact 0.75-inch outside diameter
Cons
- Primarily designed for 1/2″ copper risers, requiring adapters for different pipe sizes or materials.
This Sioux Chief water hammer arrestor is ideal for plumbers or DIYers upgrading older plumbing systems, especially those with 1/2″ copper or push-fit connections. It offers a straightforward solution to water hammer in various retrofitting scenarios.
4. TTFLEX Stainless Steel Water Hammer Arrestor 3/4 Inch Swivel FHT
Best for: Certified lead-free, flexible positioning.
Boasting CUPC/UPC and NSF-61 certifications, this TTFLEX water hammer arrestor is constructed from lead-free materials, assuring safe and high-quality water flow. Its 3/4″ swivel connection allows for installation in any position – horizontal, vertical, or angled.
The arrestor connects your washing machine hose to the supply valve with 3/4″ male hose thread (MHT) and 3/4″ female hose thread (FHT). It operates effectively within a temperature range of 33°F to 180°F and handles a maximum pressure of 250 PSI.
Pros
- NSF-61 certified lead-free
- CUPC/UPC certified
- Installable in any position
- 250 PSI maximum pressure
Cons
- The stainless steel and brass exterior finish may show water spots over time without regular cleaning.
For users prioritizing safe, certified materials in their water hammer solutions, this TTFLEX arrestor is a prime choice. Its user-friendly, multi-position installation fits easily in tight spaces around washing machine hookups.
5. (2 Pack) Lidertik Water Hammer Arrestor Washing Machine 3/4 Absorb
Best for: Easy installation, comprehensive protection.
This 2-piece set of water hammer arrestors is designed for simple installation directly onto washing machines or their outlet boxes, providing immediate relief from shock and noise. The 3/4 inch male and female threads ensure broad compatibility.
Each unit effectively absorbs water hammer shock and reduces noise, thereby protecting your washing machine’s internal components and the integrity of your water supply lines. This compliance with US regulations offers peace of mind for everyday use.
Pros
- Simple installation on outlet boxes
- Absorbs shock and reduces noise
- Protects washing machine and water lines
- Compliant with US regulations
Cons
- The plastic construction, while effective, may not offer the same perceived durability as metal alternatives.
This 2-pack is perfect for homeowners seeking a quick and effective solution to water hammer and associated noise from their washing machine. Its straightforward design makes it accessible for even novice DIYers.
6. Washing Machine Water Hammer Arrestor, 3/4″ FHT x 3/4″ MHT
Best for: Space-saving angle design, brass durability.
Featuring a space-saving 3/4″ GHT angle fitting, this arrestor is ideal for installations in tight spaces behind washing machines or near outlet boxes. The solid brass construction ensures durability and resistance to corrosion.
This arrestor is engineered to fit standard washing machine supply valves and most outlet boxes. It effectively absorbs pressure surges from fast-closing valves to eliminate water hammer, cut banging noises, and safeguard the entire plumbing system.
Pros
- Space-saving angle fitting
- Solid brass fitting construction
- Reduces water hammer and banging noise
- Protects control systems and plumbing
Cons
- The angle fitting may not be compatible with all specific washing machine valve configurations or outlet box designs.
Homeowners with limited clearance behind their washing machine will benefit from this angled arrestor’s efficient design. Its durable brass build provides reliable protection against water hammer effects.
7. LG Electronics AGM73269501 Washing Machine Inlet Valve Filter Screen ,
Best for: Genuine LG part for specific models.
This genuine LG filter screen, model number AGM73269501, is an original replacement part specifically for LG washing machines. It is made of plastic and facilitates essential water valve maintenance for compatible LG models.
Designed to fit precisely within LG washing machine inlet valves, this filter screen screens out small particles before they can enter the machine. Its inclusion is crucial for maintaining optimal water flow and protecting internal components from sediment.
Pros
- Genuine LG OEM part
- Facilitates water valve maintenance
- Screens out sediment
- Plastic construction for specific fit
Cons
- This part is exclusively for compatible LG washing machine models and will not fit other brands.
This filter screen is exclusively for LG washing machine owners needing a direct replacement for their inlet valve. It ensures proper water filtration and valve function as intended by the manufacturer.
8. Sioux Chief Mfg 660-H 3/4-Inch Female Swivel Hose Thread by
Best for: Tee connection for versatile plumbing.
This Sioux Chief water hammer arrester features a tee connection design, allowing installation directly onto washing machine supply valves or even within shower tees. It provides a 3/4-inch female swivel hose thread by 3/4-inch male hose thread connection.
Engineered for systems exceeding 60 PSI, it’s recommended to install a pressure-reducing valve upstream for optimal performance. This design accommodates direct connections to washing machine tubs or shower lines for comprehensive protection.
Pros
- Tee connection for versatile installation
- 3/4″ female swivel x 3/4″ male connection
- Integrates with washing machine valves or shower tees
- Recommended for systems over 60 PSI
Cons
- Requires upstream pressure regulation for systems exceeding 60 PSI static pressure.
Ideal for plumbers or homeowners needing to install water hammer protection in more complex plumbing setups, such as integrated shower tees. This arrester offers a flexible solution for various connection points.
9. LG 383EER2001A Genuine OEM Drain Pump Filter for LG Washing
Best for: OEM filter for LG washer debris.
This genuine LG 383EER2001A Drain Pump Filter is an Original Equipment Manufacturer part designed to trap lint and debris from your washing machine’s drain water. Manufactured with premium materials for durability, it ensures an exact fit for compatible LG and Kenmore Elite models.
This filter, also known as the Filter and Trap Assembly, fits 4.75 x 3 x 3 inches and is made from Acrylonitrile Butadiene Styrene (ABS). Its primary function is to prevent foreign objects from reaching and potentially damaging the drain pump mechanism.
Pros
- Genuine LG OEM replacement
- Traps lint and debris
- Durable ABS material
- Exact fit for compatible models
Cons
- This part is specific to LG and compatible Kenmore Elite washing machines and will not fit other brands.
LG washing machine owners looking to maintain their appliance and prevent drain pump issues will find this OEM filter essential. It captures debris effectively as part of routine maintenance or replacement.
10. Straight Water Hammer Arrestor for Washing Machine, 3/4 Inch Swivel
Best for: Noise reduction, compact design.
This 2-pack of water hammer arrestors effectively absorbs unstable water shock, reducing operating noise in washing machines, toilets, and dishwashers. Its space-optimized, multidirectional installation capability makes it ideal for tighter spaces.
The arrestor extends the service life of your pipes by mitigating the impacts of sudden water pressure changes. Meeting U.S. standards for quality and performance, these units offer a reliable solution for common plumbing noise complaints.
Pros
- Reduces operating noise
- Absorbs unstable water shock
- Space-optimized for tight installations
- Extends pipe service life
Cons
- The specific material composition for the internal shock-absorbing mechanism is not detailed, leaving room for varied durability assumptions.
Homeowners seeking to quiet down water hammer noise from various appliances, including their washing machine, will appreciate this arrestor’s effectiveness. Its compact and flexible design simplifies installation in cramped utility areas.
Stainless vs. Sweat: The True Arrestor Trade-off
When choosing a water hammer arrestor for your washing machine, the primary distinction that matters hinges on the type of plumbing you’re connecting to, not the brand name or the promise of superior noise reduction. For the overwhelming majority of users with standard washing machine hookups, a 3/4 GHT (Garden Hose Thread) connection is universal, making options like the Stainless Steel Water Hammer Arrestor for Washing Machine (3/4 Swivel) or the (Pack of 2) EFIELD S-241 Stainless Steel Water Hammer Arrestor the logical and simple choice. These are designed for direct screw-on installation to your existing washing machine supply valves or outlet boxes, offering a straightforward solution for mitigating those jarring water hammer shocks.
The confusion often arises with products like the Sioux Chief 660-HB Water Hammer Hose Arrestor. While Sioux Chief is a reputable name, this particular model is a straight compression or sweat arrester, intended for installation onto copper pipe legs or risers, not directly onto hose threads. This is a fundamentally different installation method that requires soldering or compression fitting into the copper water line itself.
Attempting to force a GHT connection onto an arrester designed for pipe sweat or compression will not work and can lead to leaks or damage. Therefore, blindly picking a product based on a popular brand without understanding its specific connection type is the most common pitfall.
This means that while all these devices aim to absorb shock, the practical difference between them boils down to installation compatibility. You won’t find a meaningful performance gap in terms of shock absorption between the TTFLEX Stainless Steel Water Hammer Arrestor 3/4 Inch Swivel FHT and models like the Lidertik Water Hammer Arrestor Washing Machine 3/4 Absorb, assuming both are correctly installed on compatible GHT fittings. The key is to match the arrester’s connection type to your plumbing’s existing configuration.
For instance, the Washing Machine Water Hammer Arrestor, 3/4 FHT x 3/4 MHT, explicitly states its universal fit across standard washing machine supply valves and outlet boxes, emphasizing its ease of use for direct hose thread connections.
LG Electronics products like the appliance’s own Inlet Valve Filter Screen (AGM73269501) or the Drain Pump Filter (383EER2001A) are entirely separate components that address water flow and debris filtration within the machine, not the external plumbing shock. They serve a different purpose and are not interchangeable with an external water hammer arrestor. The genuine dilemma for the best water arrestor washing machine lies not in advanced features, but in correctly identifying whether your plumbing requires a direct hose thread connection or a pipe-fitting solution.
For the vast majority of homeowners upgrading their washing machine setup, the straight-forward, screw-on convenience of any 3/4 GHT compatible arrestor will suffice. If you have standard washing machine supply hoses with 3/4 GHT fittings, the Straight Water Hammer Arrestor for Washing Machine, 3/4 Inch Swivel, is an excellent, no-nonsense option. If your plumbing requires a sweat or compression fitting directly onto copper, however, you must look to models specifically designed for that purpose, such as certain Sioux Chief offerings which are not intended for direct hose connection.
How to Choose the Best Water Arrestor for Your Washing Machine
Connection type and fit
For optimal performance, prioritize arrestors with standard 3/4-inch inlet connections, as these are universally compatible with 99% of North American washing machine water supply lines. Ensure the hose barb diameter measures 5/8 inch for a secure fit with common washing machine hoses. Opt for threaded fittings over compression for a more robust and leak-resistant seal, especially in high-pressure environments.
Always confirm compatibility with your existing supply hoses before purchasing; a snug, secure fit here prevents leaks and ensures uninterrupted operation. The best choice for most homes is a 3/4-inch threaded inlet arrestor with a 5/8-inch hose barb for guaranteed compatibility and a reliable seal.
Material and durability
When it comes to longevity, brass and stainless steel constructions are the clear winners. These metals resist corrosion exceptionally well, a crucial factor given their constant exposure to water. Look for arrestors featuring solid brass or stainless steel bodies, which will offer decades of reliable service.
Compromise by choosing galvanized steel or plastic bodies, as these are prone to rust and degradation over shorter periods. High-quality rubber or silicone seals are also essential for preventing leaks.
Invest in a brass or stainless steel arrestor with durable silicone seals for the longest lifespan and the most effective protection against water damage and premature failure.
Arrestor mechanism and functionality
Focus on arrestors employing an internal diaphragm design for superior water hammer suppression and longevity compared to piston-based systems. A well-designed diaphragm effectively absorbs shock and significantly reduces noise during shut-off. Look for models that explicitly state enhanced pressure relief capabilities to protect your plumbing from sudden surges.
While some specialized designs incorporate noise reduction features, the primary indicator of effectiveness is the quiet operation of the internal mechanism. Simple, user-friendly installation with minimal parts is key for maintenance-free operation.
Choose a diaphragm-style arrestor with robust pressure relief for the quietest and most secure protection.
Which Should You Choose?
- If you need a simple, direct connection for your washing machine hoses, look for a straight 3/4″ FHT x 3/4″ MHT arrestor.
- If you have limited space or an angled outlet box, opt for a 3/4″ GHT angle fitting arrestor.
- If you’re concerned about a variety of appliance noise beyond just washing machines (like toilets or dishwashers), choose an arrestor that explicitly mentions absorbing unstable water shock for multiple fixtures.
- If you’re retrofitting older plumbing or working with copper pipes, consider a straight compression or sweat arrestor designed for 1/2″ nominal copper.
Quick Best Water Arrestor Washing Machine Buying Checklist
- Verify Compatibility: Ensure the water arrestor fits your washing machine’s inlet hose size and type.
- Check Material: Opt for durable materials like brass or stainless steel for longevity.
- Assess Durability: Look for robust construction that can withstand constant water pressure fluctuations.
- Consider Installation Ease: Choose an arrestor that is straightforward to install without special tools.
- Review Pressure Ratings: Confirm the arrestor can handle typical household water pressure spikes.
- Read Reviews: See what other users say about the reliability and effectiveness of specific models.
Frequently Asked Questions
What Is A Water Arrestor For A Washing Machine?
A water arrestor for a washing machine is a device designed to absorb the shock from sudden water hammer when the machine’s fill valve closes quickly. This prevents banging noises and protects plumbing by cushioning the pressure surge.
How Does A Washing Machine Water Arrestor Work?
Most water arrestors utilize an internal air or gas-filled chamber, often with a diaphragm or piston. When water hammer occurs, this compressible element absorbs and dissipates the pressure wave, preventing damage to pipes and appliances.
Are Water Arrestors Necessary For All Washing Machines?
While not always mandatory, water arrestors are highly recommended for any washing machine installation susceptible to water hammer. They significantly reduce noise and protect plumbing from potentially damaging pressure spikes, extending the life of your system.
What Are The Signs That I Need A Water Arrestor?
You likely need a water arrestor if you hear loud banging or shuddering noises from your plumbing when the washing machine fills or drains. Persistent knocking sounds indicate pressure issues that an arrestor can effectively solve.
How Do I Choose The Right Size Water Arrestor?
Select a water arrestor with an inlet connection that matches your washing machine’s water supply hose threaded size, typically 3/4-inch GHT. Professional plumbers can also recommend specific sizes based on your home’s plumbing system.
Final Words
Investing in the best water arrestor washing machine can safeguard your plumbing and provide a quieter laundry experience. These essential devices absorb damaging water hammer, protecting your pipes and appliances from undue stress. Ensure peace of mind and longevity for your home by selecting a reliable water arrestor today.
