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Dishwasher Making Noise When Water Circulates? Here is Why And What To Do

It’s normal for the dishwasher to make buzzing sounds as its working, but if the sounds are too loud that your appliance makes a bang like sound, you have a problem you need to address.

Is your dishwasher making noise when water circulates? Here are some of the common reasons and how to solve them:

You have an object lodged at the bottom of the dishwasher.

A piece of hard food, cutlery, condiment container, or any other object can fall into the dishwasher’s bottom and lodge itself inside the gears or pump. When this happens, your dishwasher makes a loud grinding noise.

Dishwasher Making Noise When Water Circulates?

It’s wise to hire a professional maintenance specialist to fix the problem, but if you are a dab hand at DIY projects, shut off the appliance, remove the impeller and find the items stuck around the chopper blade.

Your dishes are moving around.

As the dishwasher is running, the water action can cause the dishes to rattle, and sometimes even the lightweight plastic objects are forced out of the rack.

To determine whether the noise is due to improper loading, run the dishwasher without any dishes.

If quiet, consult the dishwasher manual on how to load the dishwasher properly.

On the other hand, if you remove the dishes and still the dishwasher is noisy, chances are you have debris in your pump. Contact a service provider to inspect the appliance and remove the problematic object(s).

The spray arm is hitting something.

Are you having a rhythmic knocking sound from your dishwasher? This is most likely the spray arm hitting something inside the dishwasher.

This often happens when you have improperly arranged the dishes to fix the problem, you simply need to rearrange the dishware to provide clearance for the spray arms.

When you free the spray arms, you not only enjoy a quiet dishwasher, but you also have an excellent wash performance.

Your appliance is having a water hammer problem.

A water hammer is common when you are having a problem with your home’s water pressure. When you have a water hammer, the water force causes the water pipes to rattle as the dishwasher water valves close.

Due to this impact, you experience a banging noise.

If you think your home has a hammer problem, contact a dishwasher repair professional to fix the water pressure issue.

Your appliance isn’t properly installed.

An improperly installed dishwasher makes annoying vibrations that might be off-putting. Luckily, it’s easy to fix this problem.

Check whether the dishwasher is standing on a surface strong enough to support its weight. The surface should also be flat.

If the surface isn’t ideal, move the appliance to another location. You can also place a ¾ inch piece of wood under the appliance for additional support.

If you level the dishwasher, but it’s still vibrating, check the drain hose and ensure it’s not trapped or knocking against the dishwasher or cabinet.


I hate noise with every single bone in my body and I'm here to share some of the tricks that have worked for me in my effort to keep off noises from noisy neighbors, noisy appliances, and so on. Buckle up for the ride.

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