How to Fix Noisy Water Pipes (Water Hammer)

Imagine settling in for a peaceful evening at home, only to hear a loud banging noise every time you turn off the tap. This unnerving sound, known as water hammer, comes from the abrupt stopping of water flow in your pipes. 

Now comes the real question: how to fix noisy water pipes?

In this article, we’ll guide you through simple, effective steps to fix a water hammer noise and restore peace to your home.

What Causes Water Hammer in Pipes?

Ever turned on your tap and heard a sudden ‘bang!’ that made you jump? That’s what a water hammer is. You’ll often notice a water hammer when turning the tap on or off, especially if your water pressure is high enough to rival a fire hydrant.

So, what causes a water hammer? Imagine water rushing through your pipes like a high-speed train, only to slam into a wall when the valve shuts abruptly. That sudden stop creates a shockwave, which is what makes the loud banging sound. 

The issue can be worsened by loose or poorly secured pipes, aging or faulty valves, or the absence of air cushions—essentially, the shock absorbers of your plumbing system.

If your water pressure is particularly high, it’s like amplifying the commotion to an unnecessary level. But don’t worry, we’re about to explore how to stop the water hammer!

7 Ways to Stop Water Hammer

Enough about the causes—are you ready to learn how to stop water pipes banging? Let’s dig into the solutions so you can silence those noisy water pipes:

1. Secure Loose Pipes

The first step is to check for any pipes that might be rattling. Loose pipes are often the culprits behind this issue. Use pipe clamps or straps to secure them firmly to walls or floors, ensuring they don’t vibrate when water flows through.

2. Bleed Air Out of the Pipes

Trapped air in water pipes is one of the causes. To fix this, turn off your water supply and open all taps in your home to drain the system completely. Once the water stops flowing, close the taps and turn the supply back on. This allows the pipes to refill properly, removing any trapped air.

3. Install or Repair Air Chambers

If bleeding the pipes doesn’t work, you may need to check your air chambers. These are vertical sections of pipe designed to absorb shock. Over time, they can fill with water, rendering them useless. Re-drain your plumbing system as described above to restore air to these chambers.

4. Adjust Your Water Pressure

Excessive water pressure can worsen the water hammer. Use a pressure gauge to pressure test your plumbing system.

If the pressure is too high, install a pressure-reducing valve or adjust the existing one to a safe level (typically between 40-60 psi). Lowering the pressure ensures water flows smoothly without causing damage.

On the other hand, if you have low water pressure, the problem could also persist because the water flow isn’t strong enough to move smoothly through the pipes. In this case, you may need to increase water pressure to maintain a consistent flow and reduce the chances of noise. 

You can adjust your pressure regulator or consult a professional plumber to identify and resolve underlying issues causing low pressure.

5. Inspect Your Plumbing Fixtures

Faulty or aging plumbing fixtures like taps and valves can amplify water hammer. Inspect these components for wear and tear, and replace any that are leaking or not functioning properly. A quick upgrade can make a significant difference in reducing noise.

6. Install Water Hammer Arrestors

If the noise persists, it might be time to install a water hammer arrestor. These devices act as shock absorbers, stopping the banging sound by cushioning the sudden force of water flow.

They’re easy to install—just attach one near the problematic fixture, like your washing machine or dishwasher. Voila! The annoying noise is gone!

7. Call a Professional if Needed

If you’ve tried everything and still hear banging, it’s time to bring in a plumber. Persistent issues might indicate a need for more complex repairs or upgrades to your plumbing system.

With these steps, you can take control of the situation and stop the water hammer in its tracks!

FAQ about Solving Water Hammer Issues

How to install water hammer arrestors?

It’s simple! Turn off your water supply, locate the noisy pipe, and attach the arrestor to the nearest valve or fixture. Use a wrench to secure it tightly, turn the water back on, and enjoy the silence!

Where is the best place to install a water hammer arrestor?

The best spot is near the source of the noise—usually close to your washing machine, dishwasher, or any valve causing the banging. This placement absorbs the shock right where it happens.

What is the life expectancy of a water hammer arrestor?

A high quality water hammer arrestor can last 20 years or more with proper installation and normal usage. It’s a long-term investment in your peace of mind!

What happens if you ignore water hammer?

Ignoring a water hammer will eventually lead to damaged pipes, leaking joints, or even burst plumbing over time. Plus, the noise doesn’t get any less annoying.

How much does it cost to fix a water hammer problem?

Fixing a water hammer can cost as little as $20 for a DIY solution like an arrestor or up to $200 if you need a plumber. It’s worth it to protect your pipes—and your sanity!

Conclusion

Knowing how to fix noisy water pipes can save yourself from costly repairs—and keep a few extra dollars in your pocket. But, if you hate troubling yourself and DIY is not your cup of tea, call Neighbourhood Plumbing. We’re ready to help, 24/7 without costing you a leg. Call us today!