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How to Quiet Refrigerator Compressor Noise

How to Quiet Refrigerator Compressor Noise

Author: Sturgeon Christie

Last Updated: January 21, 2025

Read Time: 7 Minutes

How to Quiet Refrigerator Compressor Noise

Author:

Sturgeon Christie

Last Updated:

January 21, 2025

Read Time:

7 Minutes

Author: Sturgeon Christie

Updated: Jan. 21, 2025

Read Time: 7 Minutes

We hear it all the time: "this is a new fridge, but it's so noisy!" The problem in a new fridge is almost always refrigerator compressor noise. If you've got a new refrigerator with more noise than food, follow this guide to quiet fridge compressor noise and take your kitchen back.

But whether new or old, here we identify different refrigerator noises and provide real solutions that will keep your fridge quiet. Let's get into it.

We hear it all the time: "this is a new fridge, but it's so noisy!" The problem in a new fridge is almost always refrigerator compressor noise. If you've got a new refrigerator with more noise than food, follow this guide to quiet fridge compressor noise and take your kitchen back.

But whether new or old, here we identify different refrigerator noises and provide real solutions that will keep your fridge quiet. Let's get into it.

A Quiet Refrigerator is in Your Future!

The Second Skin Refrigerator Soundproofing Kit has everything you need to quiet fridge compressor noise coming from the back of your noisy fridge. It's both simple to do and budget friendly. With this kit, you can expect a 20-40% perceived noise reduction. The only things we don't understand is why this isn't in your cart yet.

  • Comes with all the P329 Spray adhesive needed
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How to Quiet a Noisy Refrigerator Compressor

Fridge compressor noise is one of the most common noise complaints we see when soundproofing a refrigerator. Many new refrigerator models are made to be more energy efficient, but that comes with its fair share of noise problems. Fridge compressors contribute two types of noise: airborne noise heard mostly as a hum and structural noise heard mostly as rattling or even clanging. That compressor hum you hear is normal to a certain extent but let's get into how to reduce fridge compressor noise.

    1.  Level the Fridge and Isolate it From the Floor
    2.  Install Acoustic Material Around the Fridge
    3.  Additional Ways to Quiet a Fridge Compressor

Step one: level the fridge and isolate it from the floor

  • Decouples refrigerator from floor

Before you do anything else, check if your fridge is level. Your fridge may be new but that doesn't mean your home is. An uneven fridge can make a compressor louder than normal. Next, check for vibrational noise coming from the floor near the fridge. Compressors are motors that pump refrigerant around so as they work hard, they create vibrational energy that transmits into the floor. The best solution for this is to place rubber isolation underneath the fridge to decouple the two hard surfaces. If the vibrations are heard in the floor below read up on how to soundproof the floor. But for targeted isolation, here are the two products we recommend:

Option #1: Sound Isolation Pads

Our Super W Sound Isolation Pads are an excellent way to decouple the floor from the fridge. You would want to get 4 medium or large pads to bear the weight of the fridge, being that refrigerators are 300lbs on average. If you need to put it in an alcove, a handy trick would be to use a rubber compatible glue or adhesive to put the pads on the bottom of the refrigerator and then place it inside with a jack or lift (if you're crazyyy strong)!

Option #2: Sound Isolation Mat

The Stomp Mat™ sound isolation mat – typically a gym mat (hence the name) – is perfect for decoupling the fridge and the floor. If you have an alcove, this is probably the easiest option. Most refrigerators come with wheels in the back. You can place the mat inside the alcove and place the back wheels on top, tilt the fridge and roll it in. Voilà!

Step two: Install acoustic materials around the Noisy fridge

Most of the noise from your fridge comes from the air cavity between the fridge and the wall behind it. Sound comes from the back of the fridge towards the bottom where the compressor is and reverberates off the back wall.

Whether it's in an alcove or not, you can reduce noise by adding sound absorbing materials on the walls behind and/or around the fridge. If have the space to put absorptive materials on the walls surrounding the fridge in an alcove, you’ll get the most sound reduction you can! But putting absorptive material behind the fridge is the most important location for preventing sound from reflecting off of the wall and back into the room the fridge is in.

GOOD NEWS! Because your refrigerator will block sight of the wall, you can use our extremely effective, budget acoustical material, CelluZorbe™, for this project. What it lacks in beauty (it's made from renewable and recycled fibers) it makes up for with a high NRC rating.

BETTER NEWS! Our fridge soundproofing kit has all the CelluZorbe™ you need, plus any P329 Spray Adhesive you need to adhere it to the wall, and it all comes at a special bundle-and-save price!

Refrigerator Soundproofing Against a Shared Wall

If your refrigerator is on a shared wall, you may need to block sound in addition to absorbing it. Use our recommended BlocknZorbe™ panels to block and absorb (as the name suggests). We always recommend the 2" thick version.

  • Reduces compressor noise
  • Budget-smart material
  • DIY friendly

Additional ways to quiet a fridge compressor

  • Deadens vibrating metal
  • Applied to refrigerator near the compressor

While you have your fridge pulled out, you can take an additional step to look at the compressor. They should have rubber feet to keep them isolated from the surface of the fridge. If you don't see any isolation, that can lead to structural noises that are likely to compound with the hum. Additionally, see if it's in contact with any other components or the wall of the fridge. Both can lead to rattling or even banging noises that are sure to annoy you. Use closed cell foam or rubber to decouple the compressor from anything pressed against it that shouldn't be.

Apply Damplifier Pro™ to the Side of the Fridge

If a lot of structural noise is coming from the motor in the fridge, install Damplifier Pro™ as close as possible to the motor or air compressor on any vibrating metal components. By deadening the vibrations at the source, you will prevent the vibrations from transmitting to other parts of the fridge and reduce the noise.

You can place these on side of the fridge with the peel and stick adhesive. These are 2mm thick so they don't take up a lot of space. Still, with an alcove, it's possible you don't have the space. If you don't, use 1mm thick Damplifier.

Other Fridge Noises and What to Do

Older refrigerators will usually make more noise than newer ones (though plenty of people wish they were made how they were back in the day). The reality is, an older fridge with older parts may start making some unsavory noises that could require professional maintenance. At Second Skin, we're soundproofing experts, not applicance technicians, so as we look at some common fridge noises, if you're concerned about what you hear, have a technician examine the refrigerator’s moving parts for a better look. If you’re attmepting to clean or repair anything yourself, make sure to unplug the fridge and do some research before to prevent damaging anything.

Grinding, Knocking, Banging or Clanking

Yes, that's a lot of sounds, but it falls under a similar umbrella of issues. It can be as simple as your ice machine dropping ice into the freezer. But you probably know that sound already. If it's not the ice machine, you may have a faulty compressor or evaporator. You can try cleaning the compressor of any dust or dirt, but if it continues, call a technician.

Sizzling

This sound is actually pretty normal. Water can be dripping on your defrost heater.

Rattling

You can have a loose drain pan. This isn't the end of the world, but should be addressed. It might be all the soundproofing you need and it's as simple as tightening loose fasteners.

Squeaks and Squeals

You have an evaporator fan inside the fridge responsible for distributing cool air throughout the fridge and a condenser fan outside the fridge responsible for cooling the compressor. Either one could get dirty or worn out over time. It may be a simple clean or a technician may need to come replace it.

Popping or Cracking

As the temperature regulates inside the fridge, the internal parts are expanding and contracting and can create these occasional noises. If it's persistent, call a tech to look at it.

Ticking or Scraping

This doesn't usually have a good story attached to it. Your defrost heater timer may be on its way out or done. Have a technician take a look.

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Popular Noisy Fridge Soundproofing Materials


Now That you Have a Not-So-Noisy Fridge

We know how annoying a loud fridge can be. That’s why we provide the best soundproofing materials to solve the issue. Whether you need to prevent vibrations from transmitting to your floor or absorb the loud sounds of the motor, we’ve got you covered! For a similar kitchen appliance, check out our article on soundproofing a dishwasher!

If you need any more advice on soundproofing your fridge or have any other questions for us, feel free to reach out. Even if you have a different home soundproofing project, like a soundproof kitchen sink, our soundproofing experts are always happy to help!

Have questions about your project?

Call us at 1.800.679.8511