Soundproofing a Dishwasher: Complete Guide


Annoyed by a noisy dishwasher? You aren’t the only one! A loud dishwasher can be very annoying especially when you just want to relax at home. You have two options: either to remove it or soundproof it. Considering that the first one is not really a good option, you are on the right place as here you will learn everything you need to know about soundproofing a dishwasher.

Dishwasher in kitchen

I know the pain because we used to have an old dishwasher at our home. It was so noisy that I just couldn’t sleep while it was working. That was when I figured out some easy and cheap ways for soundproofing a dishwasher, and surprisingly, they worked really well for me.

In this article, I will be sharing with you everything that you need to know for soundproofing a dishwasher. You can use good soundproof material to reduce the noise, or you can even use some simple tips and tricks to soundproof your dishwasher effectively and cheaply.

Before we get started, the first thing you need to know is that where is the noise coming from and what is the cause. So let’s answer this first question.

Reasons for a noisy dishwasher

soundproofing a dishwasher

If your new dishwasher has suddenly started to make a lot of noise, there are chances that it is due to some major problems in it. In that case, I would recommend you inspect your dishwasher to check if the noise is coming from a certain area or simply get it checked by a good technician.

Generally, a dishwasher makes noise due to some major reasons mentioned below:

A problem in the pump

broken dishwasher

A pump operates the spray arms and drains the dirty water off the dishwasher. It is composed of an impeller and a filter attached at the bottom of the machine.

Therefore, if you observe that the noise is coming from the bottom of the dishwater, the pump could be the reason. For that, you just have to check the pump for any dirt or debris stuck inside it. If you find any, simply clean it thoroughly and you won’t hear any noise.

If the noise doesn’t go away even after cleaning the pump, you might have to replace the pump. For that, you will need the help of a technician to help you with the problem.

Broken bearings or loose seals

If you hear a constant rattling sound from your dishwasher, the bearing and seals can be the reason. Bearings and seals are usually made up of plastic that is why they start to make a weird kind of rattling sound if they break or become worn out. Probably, if your dishwasher has become old, this can be one of the major sources of noise coming from it. If that’s the case, you will have to replace them with the new ones to reduce extra noise. A good technician can do that to help to fix the noise problem greatly!

Worn out or broken spray arms

Spray arms rotate during the dishwashing process, and if in any case, they become broken or worn out, they make a lot of noise. For that, you have to keep checking the spray arms regularly. If they seem to be worn out or broken, it is better to purchase new ones to avoid noise coming from your machine.

Learn more about it from this short but useful video:

Soundproofing a dishwasher: Step-by-step guide

If you have inspected all these major sources of noise and find no problem with them, maybe you are just bothered by the vibrating and humming sound of the machine. These are normal with electrical equipment like that and can be greatly reduced using some simple and easy techniques.

How to soundproof a dishwasher?

There are 5 easy ways to soundproofing your dishwasher easily and effectively at home: 

  1. Use a dishwasher sound shield
  2. Get a new dishwasher insulation
  3. Install anti-vibration pads
  4. Use a soundproof blanket or a rug
  5. Place a foam mat under the dishwasher

Now before you get started, here is a step-by-step guide of what you have to do to soundproof your dishwasher.

Before soundproofing a dishwasher turn it off your and unplug it 

Safety comes first, so I just have to mention this step! Turn off the water source of the dishwasher and unplug it from the power supply. Then, shift your dishwasher to a safe and dry area to proceed further.

Remove the front panel

It might seem to be a hard task but it is quite easy and simple. All you have to do is just remove the screw from the panel using a screwdriver. Then, close the door carefully and just take off the panel.

Measure the dimensions

Using a measuring tape, measure accurately the length, width, and depth of your dishwasher without the front panel.

Install the soundproofing material

Now comes the main step that requires good research on the right soundproofing materials for a dishwasher and some good technical skills to carry on the task effectively. I have covered the first part for you. If the second one goes right too, there are good chances that you be successful in soundproofing your dishwasher effectively at home!

So, let’s have a look at the best soundproofing materials used to soundproof a dishwasher!

Best materials for soundproofing a dishwasher you can use

soundproofed dishwasher

Use a dishwasher sound shield

This is one of the most effective ways of reducing the noise coming from a dishwasher. All you have to do is just get a good sound shield and place it over the dishwasher. Make sure you tuck in all the major openings of the dishwasher. It will absorb most of the noise and you will feel a great difference yourself.

Although this is one of the best and the fastest methods of noise reduction, it has one problem! You might not find a sound shield for every dishwasher model in the market. Nothing to worry, I can even help you with that! The Whirlpool dishwasher sound shield can work well for almost every brand and you can use it to soundproof your dishwasher effectively. You can find it here on Amazon.

Get new dishwasher insulation

Most of the dishwashers come with sound and heat insulation over them. After some years, this insulation begins to wear off, just like any other material in the dishwasher. This means that it no longer insulates the machine effectively and must be replaced to fix the problem.

Therefore, if your dishwasher is old, you can remove the insulation yourself or with the help of a technician to replace it with a new one. If you decide to remove it by yourself, just use a needle-nosed plier to remove the rivet and take it off. You can save the rivet to fix the new sound shield that you will install.

The sound shield that I would recommend for soundproofing your dishwasher is the GE WD01X10448 Dishwasher Sound Barrier. This sound shield can work for almost brands of dishwashers. Also, it is very easy to install. Simply purchase one from Amazon and install it to your dishwasher. Here you can order it from Amazon.

Install anti-vibration pads

Anti-vibration pads are very effective in soundproofing a lot of your machines at home. As the name indicates, they absorb all the vibrations and reduce the structural noise greatly.

The best part is that you do not have to apply any technical skills to install them. All you have to do is to purchase them from Amazon or any other market and just place them under your dishwasher.

This is just similar to what you can do for soundproofing your refrigerator. I have written a detailed article on that. Give it a read to learn how you can use these amazing anti-vibration pads for soundproofing your refrigerator as well.

Coming back to the topic, here are my recommendations on the best anti-vibration pads that you can find easily on Amazon. The first one is the Washer Dryer Shock Absorbing Pads. They are excellent in absorbing vibrations and the noise coming from it. Also, they come in the form of a pack of 4. That is why you can use them to soundproof a number of your electrical appliances at home. If this is something you want to purchase then you can find it here on Amazon.

My second recommendation would be the peacemaker isolation pads, which are known for their durability. You can take a look at them here on Amazon.

Use a soundproof blanket or a rug

cost to soundproof a floor

Another good technique that you can do for soundproofing your dishwasher is to use a soundproof blanket or a rug under it to absorb the vibrations and reduce noise. Simply lay the soundproof blanket on the floor and place your dishwasher in the center of it. Also, cover the sides of the dishwasher, but make sure you do not tape the front door.

Coming to the recommendations, I would suggest you buy Sure-Max 12 Moving and Packing Blankets from Amazon for your dishwasher. These are good-quality moving blankets that are generally used for moving furniture from one place to another, but you can even use them for a lot of your electrical appliances like this one to reduce noise greatly.

Another good moving blanket that I would recommend is the Audimute Sound Dampening Blanket on Amazon. It can also be used for soundproofing a lot of areas in your home but works great for the electrical appliances.

Place a foam mat under the dishwasher

Just similar to all of the above-mentioned techniques is using the simple foam mats to soundproof your dishwasher. The foam mats work in the same way like the soundproofing blankets or the anti-vibration pads, and greatly reduce the vibration noise from reaching you.

If you ask for my recommendation here, it would definitely be Guteauto. This sound deadener is made up of a fiberglass reduction and thus, it is the best for noise reduction. Take a look at it here on Amazon.

Another good sound deadening mat that I have been mentioning in a lot of my articles is the Noico sound deadener that you can find here on Amazon. This is a thick sound deadener that also has a waterproof property, so you can definitely go for this to soundproof your dishwasher.

Now let’s go back to the other things you can do to soundproof your dishwasher.

Drag your dishwasher away from the walls

All you have to do here is to just drag the dishwasher away from any surface that tends to amplify the noise. This can be any hard surface like the tiles or metal or even the walls at the back of the dishwasher. These surfaces make a loud rattling noise due to the constant vibration while the machine is working. To prevent that, just place your dishwasher away from any such surface even after you have applied any of the soundproofing techniques on it.

Soundproof the back wall

mass loaded vinyl

If you combine this technique with any of the above-mentioned soundproofing ways, you will get the best results!

The technique is simple. Just cut any soundproofing mat according to the right dimensions and attach it to the back wall. Make sure you use a strong adhesive so that it stays in place for a long time.

The best soundproof material that I would recommend for soundproofing the back wall is the Mass Loaded Vinyl that you can purchase here on Amazon.

Place everything back to its place

Once it’s all done, just replace all the things and reconnect the water connection. Make sure everything is correctly placed before you turn it on again.

If it still makes some rattling sound when you place dishes in it, that’s because of the lightweight, smaller dishes that knock around when water hits them. For such dishes, you can purchase a dishwasher basket to reduce the rattling sound greatly. I would recommend you to get the BPA-Free Quick Load Dishwasher Basket that you can find on Amazon.

The best ultra-quiet dishwashers 

new soundproofed dishwasher

The techniques that I have mentioned above can definitely reduce the noise coming from a dishwasher. However, if your dishwasher is just too old or the parts are completely worn out, you might look for purchasing a new one.

If that is the case, I can help you with choosing the right ultra-quiet dishwasher for you.

Which are the best ultra-quiet dishwashers?

Here is the list of some of the best ultra-quiet dishwashers that you can purchase for your kitchen to get over the noisy dishwashing:

  1. Bosch 800 Series SHPM885N
  2. Samsung DW80R9950UT
  3. KitchenAid KDTM354DSS
  4. Miele Lumen EcoFlex G6885SCVIK2O
  5. LG LDP6797ST
  6. Bosch Benchmark SHE89PW55N
  7. Bosch 500 Series SHPM65Z55N (2019
  8. Samsung DW80K7050US
  9. KitchenAid KDTM404ESS
  10. Bosch 300 Series SHSM63W55N (2017)

I will be sharing detailed information about the top recommendations. So let’s get started.

Bosh 800 Series SHPM88Z75N

This dishwasher is one of the quietest, a stylish and effective dishwasher that you will find in the market. It cleans out the most difficult stains without any noise. The sound rating of this dishwasher is 40 dBA, which is very less compared to the rest of the dishwashers with the same features. Learn about dBa from this article.

Also, the dishwasher completely dries off all your dishes, even the plastic. With all the pros, here is a major con of this dishwasher that it is quite expensive compared to the rest. Nonetheless, I think it’s all worth it.

If you want to purchase this dishwasher from Amazon, you can find it here.

Samsung DW80R9950UT

This is one of the best choices for busy people, who just want the dishwashing process to be as quick as possible. With its silent and quick cycles, you can clean your dishes in no time. The best part is the sound rating of this dishwasher is just 39 dBA. This means that it operates almost quietly, so you won’t be disturbed by any of the noise. With all its pros, I didn’t find any major con in it.

Here is the link if you want to purchase it from Amazon.

KitchenAid KDTM354DSS

This dishwasher comes with a lot of features and almost zero noise. Its sound rating is just 43 Dba. With such a less noise, the dishwasher performs a solid cleaning performance with additional spray jets to remove even the really tough stains.

Here is the link if you want to buy it on Amazon.

Miele Lumen EcoFlex G6885SCVIK2O

If you’ve decided to buy a super quiet dishwasher, even if it’s a bit expensive, my recommendation would be the Miele Lumen EcoFlex G6885SCVIK2O. This dishwasher has a great cleaning performance with a sound rating of 42 dBA. Also, it has a great energy-saving feature so if you looking for a good long-term investment, this is the perfect choice for you.

Here is the link to learn more about the purchasing details.

LG LDP6797ST

Another quiet and effective option for your kitchen is the LG LDP6797ST. It has an eye-catching modern design and the racks come with an adjustable height. You can just place the rack at the right height to avoid the rattling sound that comes when the dishes knock each other.

Here is the link to learn more about the purchasing details.

The final words

Soundproofing a dishwasher is not quite much of a difficult task. You can fix the problem easily using all the things readily available in the market. For good results, I would suggest you combine two or three options for effective soundproofing. No matter which soundproofing material you use, make sure that you use your leftover soundproof mat to cover the back wall as well, and place the dishwasher away from the surfaces that tend to magnify noise.

With all that done right, I am sure you will get successful soundproofing done and will observe great changes once you turn it on again. Also, using dishwasher baskets can serve as a great tip that people do not normally know, but is quite effective in reducing the noise coming from the knocking of the dishes.

However, if none of these techniques work, maybe it is the right time to change your dishwasher! I have recommended a few good options here that might help you choose the right one for yourself. Just make sure that you choose the option that is beneficial for you in the longer run.

Consider some of the major aspects like sound rating, efficiency, and energy consumption of a dishwasher before purchasing it for your kitchen. That being said, I hope that you don’t have to do that and you be able to soundproof your dishwasher effectively at home with not much of an investment of time and money!

Additionally, if you decide to soundproof other kitchen appliances then make sure to check out my other blog posts that can guide you through the process.

Good luck from my side!

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