How to Quiet a Noisy Refrigerator Compressor – Diagnose Causes, Quick DIY Fixes, Prevention

The annoying buzz of a refrigerator compressor kicking on, the sudden rattling hum disturbing your peace, and the struggle to have a conversation over the fridge’s din are all common problems faced by homeowners dealing with a noisy refrigerator compressor.

Loud fridge compressor issues can disrupt activities, make it hard to relax in your own home, and be frustrating to troubleshoot. Fortunately, through a mix of preventative maintenance, DIY sound reduction improvements, and understanding when professional repairs are needed, you can muffle unwanted refrigerator noises for good.

This guide covers common culprits behind noisy refrigerator compressors, actionable troubleshooting tips, ways to reduce sound issues on your own, and best practices to stop problems before they start. Follow along to regain peace in your kitchen!

What’s Causing That Loud Refrigerator Compressor Noise?

Before diving into solutions for noisy refrigerator compressors, it helps to understand what makes them loud in the first place. There are a few common offenders:

  • Loose Internal Parts Rattling Against Each Other or the Compressor – From shelves and drawers shaking loose over time to items stored inside touching the compressor, rattling metal and loose components bumping together transfer and amplify vibrations.
  • Refrigerant Flow Problems Leading to Compressor Vibrations – Issues like low refrigerant levels, failing components regulating refrigerant cycles, or airflow blockages putting strain on the system can prompt noisy operation.
  • Failing Mechanical Parts Like Fan Motors or Relay Switches – Several internal components working together enable refrigerant compression cycles. When these parts degrade over time, their inefficient operation creates noise.
  • Air Circulation Issues Forcing the Compressor to Overwork – Insufficient space for ventilation, accumulated dust/debris on coils, and condenser problems prevent proper airflow which makes the compressor run loudly to maintain cooling.

With an idea of what internally causes noisy operations, you can better pinpoint solutions. First, accurately diagnosing the type of sound and correlating it to a likely root cause is key…

Pinpoint the Type of Noise for Proper Diagnosis of refrigerator

Listening closely to isolate the type of noise coming from the refrigerator compressor narrows troubleshooting:

Humming, Buzzing or High-Pitched Sounds

  • These noises tend to signify failing mechanical parts or low refrigerant levels
  • You may notice them accompanied by loss of cooling efficiency
  • Professional repair is generally required to replace damaged components and properly recharge refrigerant

Rattling, Shaking or Vibrating Noises

  • Indicates loose internal shelves, panels or items touching and rattling against the compressor
  • Can also be due to an unsecurely mounted compressor shaking against the fridge frame
  • Tightening loose parts or shimming/remounting the compressor can solve these vibration issues

Refrigerator Running Too Frequently

  • While not directly a noise, this signals airflow problems like clogged coils or condensed causing strain
  • The compressor has to turn on excessively to maintain desired temperature
  • Clearing coil blockages, ensuring ventilation clearance, cleaning condensers can provide relief

Once you’ve identified the noise type and likely cause, specific solutions become clearer…

3 DIY Ways to Reduce Existing Noises

While professional repair may be the best solution for underlying failures causing noise, you can take matters into your own hands to reduce annoying refrigerator compressor sounds in your home:

  • Add Sound Dampening Materials – Self-adhesive rubber pads, foam strips, and insulating sheets placed under or around the external compressor muffle vibrations. Compressor Sound Dampener Kits like this highly-rated option simplify the process.
  • Ensure Proper Clearance Around the Refrigerator – Blocked ventilation pathways lead to strain. Leave ample space behind and beside the refrigerator, regularly clear dust buildup underneath, and give it room to “breathe”.
  • Securely Re-Mount a Loosening Compressor – Over time, the compressor can shake loose leading to a contact rattle against the frame. Carefully shim the mounts and reinforce them with lock washers or nuts.

These DIY noise improvements are quick and affordable band-aid solutions for stubborn buzzing. But when should you call in an appliance repair expert instead?

Read : How to Make an Air Compressor Quiet: 15 Ways to Reduce Noise

Calling a Repair Technician for the refrigerator

DIY noise reduction efforts only muffle sounds, not address underlying issues. Know when a pro is needed:

  • Grinding Metal Noises Coming from Compressor – This signals more serious problems like an unbalanced internal pump component at risk of failure. Restore smooth operation before complete breakdown.
  • Inability to Resolve Noise Issues on Your Own First – If all your realigning, padding, and damping attempts still don’t provide noise relief, then an internal component assessment is required to identify root causes.
  • Noticeable Loss of Cooling Efficiency – Excess noise paired with rising interior temps means an appliance pro should troubleshoot low refrigerant charges, leaky components, and airflow obstructions and restore cooling capacity along with quiet operation.

Avoid “band-aid” solutions that just hide damaging underlying issues. Be proactive and call an expert when needed to nip problems in the bud.

Tips to Quiet a Noisy Refrigerators in future

Alongside properly troubleshooting and reducing existing refrigerator compressor noise, you can take preventative maintenance steps to minimize future annoying sounds:

  • Upgrade Older Refrigerator Models Proactively – Impending compressor failures are common on appliances over 10 years old. Pre-empt issues by investing in an energy-efficient replacement before breakdowns happen as features improve.
  • Conduct Regular Maintenance Like Replacing Water Filters – Clogged water filters strain systems. Swap every 6 months per manufacturer recommendations for optimal operation.
  • Install Refrigerator Properly With Room to Ventilate – Compressor overwork from poor ventilation causes premature wear. Ensure clearance behind and around the unit during installation for sufficient airflow.

Stay ahead of headaches with preventative care, learn when professional help is more appropriate than DIY measures, and use targeted noise reduction methods to start regaining peace from that loud refrigerator compressor!


Persistent noisy refrigerator compressor issues don’t have to be tolerated or left unchecked. In many cases, DIY sound-dampening adjustments combined with preventative maintenance are enough to resolve annoying humming, buzzing and rattling sounds.

Listen closely to hone in on the specific noise type, then match targeted solutions – whether securing loose parts, improving circulation pathways or calling in a repair pro when needed. Over time, address underlying causes rather than just muffling symptoms for lasting results.

Review the common culprits, smart troubleshooting steps, DIY sound reduction methods and prevention tips covered in this guide to regain peace from a noisy refrigerator compressor.

Frequently Asked Questions

What are the most common reasons for a loud refrigerator compressor?

The most common culrpits are loose internal components rattling together or against the compressor, failing parts like fan motors leading to noise, insufficient airflow forcing it to strain, and issues with refrigerant flow causing vibrations.

What are some ways I can reduce the noise on my own?

DIY methods like adding sound dampening pads under the compressor, securing loose mounting hardware, ensuring ventilation clearance around the unit, and replacing easily accessible straining parts can help muffle or reduce noise.

When should I call an appliance repair technician?

Contact a refrigerator compressor repair expert if you hear grinding metal noises which likely indicate serious failure risks, if DIY efforts still leave loud noises, or if cooling efficiency declines along with the sound issues pointing to underlying problems.

How can I prevent loud compressor issues in the first place?

Upgrading older inefficient models before breakdowns happen, staying on top of maintenance like water filter changes, having it installed properly to allow airflow, and addressing minor issues early are great prevention tips.

Will adding soundproofing make other refrigerator problems worse?

If only external damping is added without addressing underlying circulation issues, mechanical failures or loose parts, it could cover up issues not yet solved, allowing them to exacerbate until full failure. Get to the root of noises before just muffling.

Let me know if you need any other sections or improvements to round out this comprehensive guide on quieting noisy refrigerator compressors!

Hello, my name is Ritesh Sankla, and I believe in living a peaceful life. A few years ago, I began soundproofing my home, bedroom, studio, and car to reduce the noise, and I'm sharing the same experience on SoundProofway. The same method I've used to muffle noise in my car, studio, and bedroom is what I'm offering on SoundProofway.

Leave a Reply

Share via
Copy link