How to Fix Air Hammer in Pipes: A Comprehensive Guide for DIY Enthusiasts

Have you ever experienced a loud hammering sound coming from your pipes? It’s not only annoying but also concerning, as it might indicate a more significant problem with your plumbing system. This sound, known as air hammer, occurs when there is a sudden change in the flow of water, causing air to build up and be released forcefully. Fortunately, fixing air hammer in pipes is not as complicated as it may seem.

With the right tools and steps, you can put an end to the noisy disturbance and prevent any possible damage to your plumbing. In this blog post, we’ll guide you through the process of fixing air hammer in pipes and give you some tips to avoid it from happening in the future.

Understanding Air Hammer

Have you ever heard a loud banging or hammering sound coming from your pipes? That’s air hammer, and it’s a common issue that homeowners and plumbers encounter. Air hammer is caused by water flowing through pipes and hitting a closed valve, causing a shockwave that creates the banging noise. Luckily, fixing air hammer is a straightforward process.

The first step is to locate the pipes where the sound is coming from, and then turn off the water supply to that area. Next, drain the pipes to remove any remaining water. Once the pipes are drained, install an air chamber or water hammer arrestor to absorb the shockwave and prevent future air hammer.

By using these tips, you can get rid of air hammer and enjoy peaceful and quiet plumbing in your home.

Causes of Air Hammer

Air hammer is a common occurrence in pneumatic systems, and it can cause unwanted noises, vibrations, and potentially dangerous equipment failure. Essentially, air hammer happens when air collides with an obstruction in the system, causing pressure waves to bounce back and forth throughout the pipes. This can cause rapid pressure changes that put stress on the system’s components, leading to leaks, broken equipment, or even explosions in extreme cases.

The causes of air hammer can vary, but some common ones include high flow rates, sudden valve closures, and improper system design. For example, if the system’s pressure relief valve is set too high, it may create excess pressure that causes air hammer. Conversely, if the system’s pipes are too narrow or have too many turns, it can increase air resistance, leading to air hammer as well.

Understanding the causes of air hammer is crucial for preventing it from occurring and maintaining a safe, reliable pneumatic system.

how to fix air hammer in pipes

Symptoms of Air Hammer

Air hammer is a common problem that occurs in many households and can be quite frustrating. It typically presents itself as loud banging or clanging noises that emanate from the pipes when the water is turned on or off. This sound is caused by the rapid movement of air bubbles inside the pipes, which creates shock waves that cause the banging noise.

These vibrations can lead to more serious problems if not addressed promptly, such as cracked pipes and leaks. It’s important to identify the early symptoms of air hammer, such as loud thumping and vibrations in the pipes, and take necessary steps to fix the issue. This might involve installing air chambers, adding valves, or adjusting the water pressure.

By understanding the symptoms of air hammer, homeowners can take measures to prevent costly damage and ensure that their piping systems function smoothly and efficiently.

Methods to Fix Air Hammer

Air hammers in pipes can be a real headache. They can create loud banging noises and even cause damage to your plumbing system. Fortunately, there are several methods to fix air hammer in pipes.

Firstly, you can try installing an air chamber. This device is installed on the plumbing line near the problem area and essentially creates a cushion of air that absorbs the shock caused by water. If this does not work, you can try installing an anti-hammer valve that will control water pressure and prevent the banging noise.

Another option is to install water hammer arrestors, which are similar to air chambers but contain a piston that absorbs the shock caused by water. Finally, you could also try reducing the water pressure in your home, as high pressure can often cause air hammer in pipes. By implementing one or more of these methods, you can effectively fix air hammer in pipes and prevent any future disruption to your plumbing system.

Method 1: Add Water Hammer Arrestor

Water Hammer Arrestor If you’re experiencing air hammer in your plumbing system, one solution is to add a water hammer arrestor. This device helps to absorb the force of the water when it’s suddenly turned off and prevents it from creating that annoying banging noise. Water hammer arrestors come in different types and sizes, and it’s important to choose the right one for your needs.

You can install it yourself if you feel confident with plumbing, or hire a professional plumber to put it in for you. Adding a water hammer arrestor is an effective way to fix air hammer and prevent any damage to your pipes or appliances down the line. So, if you’re tired of hearing that banging noise every time you shut off a faucet or valve, it’s time to invest in a water hammer arrestor.

Method 2: Adjust Water Pressure

If you’ve been experiencing a banging noise in your pipes, you’re likely dealing with air hammer. Luckily, there are a few methods you can try to fix the issue. One option is to adjust your water pressure.

If your water pressure is too high, it can cause water to slam against the pipes, creating that distinct banging noise. To decrease your water pressure, locate the main water supply valve and adjust it accordingly. You can also install a water pressure regulator to ensure your water pressure stays at a consistent and safe level.

While adjusting your water pressure may not completely eliminate air hammer, it can certainly help lessen the noise and prevent future damage to your pipes. Don’t hesitate to call in a professional if you’re unsure about making any adjustments yourself.

Method 3: Secure Loose Pipes

Fixing air hammer in plumbing can easily be achieved through a few methods, one of which is secure loose pipes. Loose pipes in your plumbing system can cause vibration, leading to annoying hammering noises. The most common cause of this is the lack of support or cushion that should be present when the pipes come into contact with your home’s framing.

Installing pipe hanger brackets can effectively reduce the movement of loose pipes, and also help to secure them in place, eliminating air hammer. By wrapping the pipes with foam insulation sleeves, you further aid in the prevention of vibration and noise. It is important to note that loose pipes can signal a bigger problem, and ignoring air hammer issues can lead to more severe problems, such as leaking or burst pipes.

By fixing your loose pipes and supporting them properly, you can enjoy a much quieter plumbing system.

Preventing Air Hammer

Air hammer in pipes can be a real headache, but fortunately, there are a few ways to prevent and fix the problem. One effective method is to install a water hammer arrestor. This device works by absorbing the energy of the water hammer and reducing the pressure in the pipes.

Another solution is to add air chambers to your plumbing system. These chambers act as cushions to absorb the shock of water flow and prevent the hammering effect. In addition, it’s important to make sure your pipes are properly secured and anchored, which can reduce vibration and movement that can contribute to air hammer.

Regular maintenance, such as flushing debris out of your pipes, can also help prevent air hammer. If you’re experiencing air hammer in your pipes, don’t ignore it! Addressing the issue now can save you money and prevent further damage to your plumbing system in the long run.

Regular Maintenance

Air hammer, also known as water hammer, occurs when there is a sudden change in flow or pressure in a plumbing system. This can cause loud banging or hammering noises, which not only disrupt the peace but also lead to damage in the system. Fortunately, regular maintenance can prevent air hammer from occurring.

One way to prevent air hammer is by installing air chambers or shock absorbers, which absorb the pressure changes and prevent the pipes from shaking. Another way is to check and adjust the water pressure regularly, which can be done using a water pressure gauge. Additionally, ensuring that all the pipe hangers and straps are secure can help prevent vibration and movement in the pipes, which can lead to air hammer.

Taking these small steps can help prevent the annoying and potentially damaging issue of air hammer in your plumbing system.

Professional Inspection

If you’re experiencing a loud, banging noise in your pipes when you turn off a faucet, you may be dealing with air hammer. This common issue is caused by a sudden change in water pressure, which creates a shockwave that travels through the pipes and causes them to vibrate. Fortunately, air hammer can be prevented with a professional inspection of your plumbing system.

A trained plumber will be able to locate and repair any faulty valves or pipes that are contributing to the problem. Additionally, they can install air chambers or arrestors to absorb the shockwave and prevent it from causing further damage. Don’t let air hammer go unchecked – it can eventually lead to leaks, cracks, or even burst pipes.

Contact a licensed plumber today to schedule an inspection and keep your pipes running smoothly.


In summary, fixing air hammer in your pipes is as simple as finding the root cause and applying the right solution. Whether it’s installing air chambers, securing loose pipes, adjusting water pressure, or simply investing in a high-quality water hammer arrestor, there’s always a way to shut down those annoying knocks and bangs. Just remember, when it comes to plumbing problems, don’t let them hammer you down – take control and fix the issue before it becomes a bigger headache.


What causes air hammer in pipes and how does it affect plumbing systems?
Air hammer in pipes is caused by the sudden stoppage of flowing water, which creates a shock wave that can damage pipes and other plumbing components. It can lead to leaks, burst pipes, and even water damage in your home.

What are some common solutions to fix air hammer in pipes?
One solution is to install a water hammer arrestor, which absorbs the shock wave and prevents it from damaging your pipes. Another solution is to adjust the water pressure in your plumbing system to prevent sudden stoppage.

How do you know if you have air hammer in your pipes?
You may hear loud banging or clanging noises coming from your plumbing system, especially when you turn off a faucet or shut down your dishwasher or washing machine.

Can air hammer in pipes be fixed without calling a plumber?
Yes, you can DIY the installation of a water hammer arrestor or adjust your water pressure if you feel comfortable doing so. However, it’s recommended to call a professional plumber for larger or more complex issues.

How can air hammer in pipes affect the efficiency of your plumbing system?
Air hammer can create water hammer, which can lead to water waste and higher water bills. It creates stress on pipes and other plumbing components, causing them to wear out quicker.

How do you prevent air hammer in pipes from occurring in the first place?
One way to prevent air hammer is by installing a water hammer arrestor during the initial installation of your plumbing system. Other preventative measures include regularly checking and adjusting your water pressure and ensuring that all air chambers in your plumbing system are properly maintained.

What are some signs that your plumbing system may have sustained damage from air hammer?
Signs include leaky pipes, low water pressure, running toilets, and water damage in your home. It’s important to address any plumbing issues promptly to avoid further damage and costly repairs.

Show More

Related Articles