Water hammer can be a frustrating and potentially damaging problem for any household, especially when it comes to washing machines. The sudden banging or knocking noises in your pipes aren’t just annoying—they can also signal stress on your plumbing system, leading to leaks or long-term wear.
A water hammer arrestor is a simple, effective solution that absorbs these shocks and helps protect your washing machine and pipes. In this guide, we review the best water hammer arrestors for washing machines, highlighting key differences in design, installation, and durability so you can choose the right fit for your home.
Top 8 Best Water Hammer Arrestor For Washing Machine
Finding the right Water Hammer Arrestor For Washing Machine isn’t always straightforward. To simplify the process, we compared leading products and shortlisted the ones that truly stand out.
1. EFIELD Stainless Steel Water Hammer Arrestor Pack
Water hammer can cause loud noises and put unnecessary strain on your washing machine and plumbing. Using a water hammer arrestor helps absorb these shocks, reducing both noise and the risk of damage.
This EFIELD pack stands out for its combination of stainless steel construction and flexible installation options. It’s ideal for homeowners who want a reliable, easy-to-install solution that works in a variety of setups.
- 3/4 inch Swivel Hose Threads: Fits most standard washing machine connections for straightforward installation.
- Max Working Pressure 250 PSI: Handles typical residential water pressures with ease, offering peace of mind.
- Horizontal or Vertical Mounting: Allows for flexible placement, even in tight laundry spaces.
Compared to many alternatives, this model prioritizes universal compatibility and robust build quality. The only tradeoff is that it doesn’t include extra accessories, but its simplicity makes it a dependable choice for most households.
- Stainless steel and brass build
- Fits standard washing machine hoses
- Works in horizontal or vertical positions
- Pack of two for both hot and cold lines
- Straightforward installation
- No included sealing tape
- No certification details listed
2. EFIELD Angle Stainless Steel Water Hammer Arrestors
Water hammer arrestors are essential for preventing pipe banging and protecting washing machine valves. Angle designs can be especially useful when space behind the appliance is limited.
This EFIELD angle pack is a strong pick for those needing a compact solution that fits into awkward or tight laundry setups. It’s well-suited for installations where straight models might not fit comfortably.
- Angle Configuration: Makes it easier to install in confined or angled spaces behind washing machines.
- 3/4 inch Swivel Hose Threads: Compatible with standard washing machine hoses for hassle-free setup.
- Max Working Pressure 250 PSI: Reliable for most residential plumbing systems.
Unlike straight models, this angle version prioritizes space efficiency. The main tradeoff is that it may not be necessary if you have plenty of room, but it’s a smart choice for challenging installations.
- Angle design for tight spots
- Durable stainless steel construction
- Easy to install
- Pack includes two units
- Works horizontally or vertically
- No accessory kit included
- Limited to standard hose sizes
3. Sioux Chief 660-HB Water Hammer Hose Arrestor
Water hammer can be especially problematic in older homes or retrofitted plumbing systems. A versatile arrestor that fits multiple connection types can make upgrades much easier.
The Sioux Chief 660-HB is a flexible choice for those updating or repairing existing plumbing. Its compatibility with various fittings makes it a go-to for retrofits and repairs.
- Straight Compression and Sweat Options: Compatible with copper, press-fit, and push-fit systems for broad application.
- Tee and Slip Tee Configurations: Allows installation on supply valves or directly in-line with pipes.
- Designed for Retrofitting: Especially popular for replacing air chambers or adding protection to older setups.
Compared to dedicated washing machine arrestors, this model prioritizes adaptability. The tradeoff is that installation may require more plumbing knowledge, but it’s a great fit for those with mixed or older plumbing.
- Multiple fitting options
- Ideal for retrofits
- Works with copper and PEX
- Can be installed in-line or at valves
- Straightforward design
- Installation may require tools
- Not as compact as some models
4. Lidertik Water Hammer Arrestor 2-Pack
If you’re dealing with water hammer and want a quick, no-fuss fix, a straightforward arrestor is often the best choice. This helps prevent noise and protects both your washing machine and supply lines.
Lidertik’s 2-pack is designed for easy installation, making it a good fit for homeowners who want to solve water hammer issues themselves without special tools or plumbing experience.
- 3/4 Inch Male and Female Threads: Fits most washing machine hoses and outlets for universal use.
- Compliant with US Regulations: Offers peace of mind regarding safety and standards.
- Simple, Tool-Free Setup: Can be installed quickly by most users.
Compared to more complex models, this option prioritizes ease of use. The tradeoff is fewer advanced features or certifications, but it’s a practical pick for straightforward needs.
- Easy to install
- Universal thread compatibility
- Pack of two
- Reduces noise and shock
- US regulation compliant
- No advanced certifications listed
- Basic design
5. SUNGATOR Stainless Steel Water Hammer Arrestor Set
Water hammer arrestors are crucial for preventing pipe noise and protecting appliances, but safety certifications can be a deciding factor for many buyers.
This SUNGATOR set stands out for its compliance with cUPC and NSF requirements, making it a strong choice for those who want assurance their plumbing components are safe for water distribution.
- Certified to cUPC and NSF Standards: Ensures suitability for potable water and compliance with US regulations.
- Forged Solid Brass Core: Delivers high resistance to corrosion and abrasion for long-term reliability.
- Includes Sealing Tape: Makes installation easier and helps prevent leaks.
Compared to uncertified options, this model prioritizes safety and peace of mind. The main tradeoff is a slightly higher price for certification, but it’s worth it for those who value verified quality.
- Certified for potable water
- Solid brass and stainless steel construction
- Includes sealing tape
- Pack of two
- Handles high pressure
- Slightly higher cost
- Only available as a straight model
6. SECKWHALE Stainless Steel Water Hammer Arrestor
Water hammer arrestors are most effective when they can be installed exactly where needed, regardless of pipe orientation or location. Flexibility in mounting is key for many households.
SECKWHALE’s model is designed for both horizontal and vertical installation, making it a good fit for homes with unique or challenging plumbing layouts.
- Flexible Mounting Options: Can be installed in any orientation to suit different setups.
- High-Quality Brass Construction: Offers strong corrosion and abrasion resistance for durability.
- Certified for Drinking Water: Meets UPC and NSF requirements for safe use.
While some models are limited in how they can be installed, this one prioritizes adaptability. The tradeoff is that it’s a bit more basic in design, but it’s reliable for a range of applications.
- Works in any orientation
- Durable brass build
- Certified safe for drinking water
- Wide application range
- Simple installation
- No included accessories
- Basic appearance
7. TT FLEX Stainless Steel Water Hammer Arrestor
Lead-free construction is a top concern for many households, especially when plumbing components are used in water supply lines. A certified arrestor can help ensure water safety.
TT FLEX’s arrestor is certified lead-free and meets multiple US safety standards, making it a strong choice for those who want peace of mind about water quality.
- Lead-Free Certified: Holds cUPC/UPC and NSF-61 certifications for safe, compliant use.
- Max Pressure 250 PSI: Handles typical residential water pressures.
- Easy to Install in Any Position: Flexible mounting for different laundry room layouts.
Compared to uncertified or non-lead-free models, this option prioritizes health and compliance. The tradeoff is a slightly higher price and a basic accessory set, but it’s ideal for safety-focused buyers.
- Certified lead-free
- Flexible installation positions
- Stainless steel and brass materials
- Meets US safety standards
- Easy to connect
- No extra accessories
- Basic design
8. SUNGATOR 3/4" Angle Water Hammer Arrestor
Angle water hammer arrestors are particularly useful when connecting directly to laundry valves or when space is limited behind the washing machine. They help reduce pipe noise and protect appliances.
This SUNGATOR angle model is a practical pick for those who need to install an arrestor in a tight or awkward spot. It’s especially suitable for laundry rooms with limited clearance.
- Angle Design for Tight Spaces: Fits well behind appliances or in close quarters.
- Certified to cUPC and NSF Standards: Safe for potable water and compliant with US regulations.
- Solid Brass Construction: Built to withstand corrosion and wear.
Compared to straight models, this angle arrestor prioritizes space efficiency. The tradeoff is that it may not be necessary if you have ample room, but it’s a smart solution for compact setups.
- Angle design for easy fit
- Certified for potable water
- Solid brass and stainless steel
- Includes sealing tape
- Pack of two
- Angle may not suit all setups
- Only available in angle style
Buying Guide: How to Choose the Best Water Hammer Arrestor for Washing Machines
Water hammer arrestors are technical plumbing devices designed to absorb shock and reduce noise caused by sudden water flow changes in your washing machine’s supply lines. Choosing the right arrestor involves understanding connection types, installation space, and safety certifications. Many buyers overlook key differences in design and compatibility, leading to frustration or ineffective results.
- Straight vs. Angle Designs: Straight arrestors are best for open spaces, while angle models fit tight or awkward spots behind appliances.
- Thread Compatibility: Most models use 3/4 inch hose threads, but always check your washing machine and supply valves for a proper fit.
- Material Quality: Stainless steel and brass are preferred for corrosion resistance and durability in wet environments.
- Certifications: Look for cUPC, NSF, or lead-free certifications if water safety is a concern.
- Installation Flexibility: Some arrestors can be installed horizontally or vertically, which is important for unique laundry room layouts.
- Accessory Inclusion: Some models include sealing tape or installation kits, while others do not.
- Common Misunderstanding: Many assume all arrestors fit any setup, but stem length, angle, and certification can make a real difference.
Straight vs. Angle Water Hammer Arrestors
The main decision for most buyers is whether a straight or angle arrestor will fit best behind their washing machine. Straight models are ideal when there’s plenty of space and direct access to the hose connection. Angle models are better if your washing machine is close to the wall or if the supply valves are positioned in a way that makes straight connections difficult.
- Straight models: Easier to install in open areas
- Angle models: Fit better in compact or awkward spaces
Importance of Certifications and Materials
Not all water hammer arrestors are created equal when it comes to safety and longevity. Certifications like cUPC, NSF, or lead-free status ensure the product is safe for drinking water and meets US plumbing standards. Materials such as stainless steel and solid brass offer better resistance to corrosion and wear, which is especially important in humid laundry rooms.
Installation and Fitment Challenges
Some washing machines have recessed or hard-to-reach inlets, making standard arrestors difficult to install. Models with extended stems or flexible mounting options can help overcome these issues. Always measure your available space and check the orientation options before purchasing.
- Extended stem models: Useful for recessed or deep inlets
- Flexible mounting: Allows for installation in any orientation
Accessory Kits and Ease of Installation
While most arrestors are designed for DIY installation, some include extras like sealing tape or detailed instructions, which can make the process smoother. If you’re new to plumbing projects, look for models that simplify installation.
Final Buying Advice
Selecting the right water hammer arrestor comes down to matching your specific plumbing setup and installation needs. Avoid assuming that any model will fit—pay attention to space, orientation, and certification.
- Measure your available space and check hose thread compatibility before buying
- Choose angle models for tight or awkward spaces, straight models for open setups
- Look for certifications if water safety is a priority
- Consider included accessories for easier installation
- Don’t overbuy: basic models work well for most standard laundry rooms, but specialized designs help with unique challenges
FAQ For Water Hammer Arrestor For Washing Machine
1. What does a water hammer arrestor do for a washing machine?
2. How do I know if I need a straight or angle water hammer arrestor?
3. Are certifications like cUPC or NSF important for water hammer arrestors?
4. Can I install a water hammer arrestor myself?
5. Do I need to install arrestors on both hot and cold water lines?
6. How do I choose the right size water hammer arrestor?
7. Will a water hammer arrestor fix all pipe noise issues?
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