How to Install a Water Hammer Arrestor to Stop Noisy Pipes
If you’ve ever heard loud banging noises in your walls when shutting off a faucet or after your washing machine finishes a cycle, you’re likely dealing with water hammer. Installing a Water Hammer Arrestor: Complete Guide This common plumbing issue can lead to long-term damage if ignored. The good news is that installing a water hammer arrestor is a simple and effective solution. You May Also like: connect pvc pipe to copper pipe without welding
In this guide, you’ll learn what a water hammer arrestor is, how it works, and how you can install one yourself. If you’d rather leave it to the professionals, the team at Plumber Near Me is ready to help.
What Is Water Hammer?
Water hammer occurs when fast-closing valves in appliances like washing machines, dishwashers, or faucets suddenly stop the flow of water. This abrupt halt creates a pressure wave in the plumbing system, resulting in loud knocking noises and potential long-term pipe damage.
To combat this, homeowners often install a water hammer arrestor, also known as an anti-hammer device. These small devices absorb the shock and pressure caused by the sudden stop in water flow, effectively helping to prevent water hammer from causing damage.
Why Install a Water Hammer Arrestor?
Installing a water hammer arrestor offers several long-term benefits:
- Reduces or eliminates loud pipe banging
- Protects appliances and valves from pressure surges
- Helps prevent pipe damage and leaks
- Extends the lifespan of your plumbing system
- Easy to install, often without tools
Whether you’re working on a utility sink or behind a washing machine, adding this device is a smart, preventative upgrade.
Step-by-Step Guide to Installing a Water Hammer Arrestor
Tools and Materials
- Water hammer arrestor (with the correct fitting type)
- Adjustable wrench or pliers
- Teflon tape (optional, depending on fitting type)
- Bucket or towel to catch any residual water
1. Shut Off the Water Supply
Before beginning any plumbing task, turn off the water supply. For appliances, this usually means turning the local shutoff valves clockwise until tight.
2. Disconnect Water Supply Lines
Use a wrench to loosen the hot and cold water supply hoses from the appliance or sink. Be prepared for a small amount of water to spill out.
3. Install the Water Hammer Arrestors
Attach the water hammer arrestors to the valves or directly to the appliance inlet connections. Hand-tighten them first, then secure with a wrench if needed. Ensure the orientation matches the flow direction.
4. Reconnect and Test
Reconnect your supply hoses to the arrestors, then slowly turn the water back on. Observe for leaks and listen to see if the banging noise has been resolved.
5. Check for Leaks
Inspect the connections to ensure everything is watertight. If any leaks appear, tighten the fittings slightly or apply Teflon tape as needed.
When to Call a Professional Plumber
While installing a water hammer arrestor is generally a straightforward DIY project, not all situations are the same. If you’re dealing with rigid pipes, old plumbing, or limited access behind walls or appliances, it’s best to hire a professional.
At Plumber Near Me, we offer expert plumbing services for homes and businesses. From minor upgrades like water hammer arrestors to full system installations, our licensed professionals are here to make your plumbing more reliable and efficient.
Frequently Asked Questions
What is a water hammer arrestor?
A water hammer arrestor is a device that absorbs the shock created when a valve closes quickly and water flow stops abruptly. It prevents pressure surges from damaging your plumbing and appliances.
Where should I install a water hammer arrestor?
The ideal location is as close as possible to the source of the hammer—typically where a washing machine, dishwasher, or utility sink connects to water supply lines.
Can I install it myself?
Yes. If your setup uses flexible hoses, it’s typically a tool-free or low-tool installation. If you’re uncomfortable with plumbing tasks, a professional plumber can install it quickly and correctly.
Do I need one for every fixture?
Not necessarily. Focus on fixtures with fast-closing valves or those that produce the loudest water hammer effects. Washing machines and dishwashers are common priorities.
What if I still hear pipe noises after installation?
If pipe noise persists, the issue could be due to other factors like loose pipe supports or excessive water pressure. In this case, we recommend scheduling a professional plumbing inspection.
Final Thoughts
Installing a water hammer arrestor is a cost-effective way to protect your plumbing system and eliminate annoying noises caused by water hammer. It’s a small investment with big long-term benefits for any homeowner.
Installing a Water Hammer Arrestor: Complete Guide If you’re not comfortable handling the installation yourself, or want expert guidance, contact the team at 24 hour Plumber Near Me. We provide reliable plumbing services with a commitment to quality and customer satisfaction. Whether you’re dealing with noisy pipes, leaky valves, or full plumbing installations, our local experts are here to help.
