Loud banging in the pipes is certainly odd. However, if it tends to happen shortly after shutting off the water, you could be dealing with a common plumbing issue called “water hammer.” It’s relatively easy for professionals to fix and isn’t any cause for concern. Consider the following questions to determine what your next steps should be.

4 FAQ About Water Hammer

What is water hammer?

When a faucet or valve shuts off, there’s nowhere for the water to go but backward. This sudden increase in pressure produces a small shock wave that travels down through the system. The loud bangs that you hear are the sound of the water shaking the pipes as it reverses direction.

Can water hammer damage the pipes?

Yes. Sudden changes in pressure can create the potential for damage. The shaking and banging could knock one of the joints loose and cause a leak to develop. If the shock wave is strong enough, it could break through the side of the pipe. This could cause a large amount of water damage within the walls and require replacement parts.

Does water hammer affect new plumbing?

Not usually. Modern systems have “air cushions” to prevent damage from changes in pressure. These pockets of air act as a buffer and reduce the force of the shock wave before it can go much further. Over the years, these components could take on water, so schedule regular inspections to ensure they continue to protect the plumbing.

How do you fix water hammer?

If your system doesn’t have an air chamber, then install one as soon as possible. Another product you might want to consider is a water hammer arrestor. The chamber on this device is full of air or gas and features a tight seal with a diaphragm or piston. It’s made to absorb most of the pressure from the shock wave and will preserve the condition of the system.

Prevent damage from water hammer by working with the professionals at Biggerstaff Plumbing Heating & Air. They are a three-generation, family-owned company that has been providing quality plumbing and HVAC services since 1957. Their plumbing contractors are recognized throughout Lincoln, NE, for their honesty and professionalism, and offer some of the industry’s most competitive rates. Call (402) 466-8118 to request a free estimate or visit their website for additional information on their services.