How To Make a Portable AC Quieter? | Know 7 Best Techniques

Portable AC is great for cooling a room but can also be noisy. When it disturbs your family and you, you search for the answer about how to make a portable AC Quieter.

Don’t worry. Today I will discuss the best ways to make a portable air conditioner quiet and efficient. 

Fortunately, with some easy techniques, you can make your AC quieter without sacrificing performance.

You can reduce AC noise by installing soundproof foam or using rubber mats. Additionally, I’ll talk about how regular maintenance and cleaning can impact your AC’s noise levels. 

After reading this article, you’ll know everything you need to make your portable AC quieter and enjoy a quiet environment.

So, keep reading.

How To Make A Portable Ac Quieter?

Portable air conditioners can be quite noisy, as you know. If you want your portable AC to be quieter, you can do a few things.

Here, I will discuss how to make a portable AC quieter so that you can enjoy your day noiseless.

Let’s start.

Check The Level

If your portable AC produces too much noise, you should check its level first.

The level could be off, causing vibrations and noises. Turn the knob on the back of the unit to adjust the level.

The working principle of air conditioners involves moving liquid and gaseous refrigerants through tubes. A level air conditioner will work more efficiently.

Fortunately, this is simple to check.

Grab your spirit level and get started. Check to see if it’s slanted or not. You can ensure your air conditioner works less hard by remaining completely upright.

The compressor could be wrong if the level is not the problem. The compressor is what circulates the coolant and makes the AC work. 

If it’s not working properly, it can make a lot of noise. You can check the compressor by feeling it for vibration or listening for a hissing sound. 

There is an issue with the compressor, and you should take it to a professional to have it checked out.

Keep Your Portable Air Conditioner On A Level Surface

Portable air conditioners vibrate and make noise if they aren’t on a level surface. 

To avoid this, take the following steps:

  • Level your portable air conditioner before using it- Using a portable air conditioner off a level surface likely results in louder operation. Before using your unit, ensure it is level with a spirit level.
  • Place your portable air conditioner on a soft surface- The vibrations from your portable air conditioner will be amplified if placed on a hard surface. Placing it on a soft surface, such as a rug or towel, will help reduce the amount of noise emitted.

Use rubber feet or pads on your portable air conditioner- If your unit does not have rubber feet or pads, you can purchase them separately and attach them to the bottom. It will help reduce the amount of vibration and, thus, the noise emitted from the unit.

Use Anti Vibration Pads for Portable Air Conditioners

You know how annoying vibration is if you have a portable air conditioner. The vibration can be so bad that it shakes the entire unit, making it very loud and difficult to use. 

Luckily, there are anti-vibration pads for portable air conditioners that can help to reduce the noise and make your unit more stable.

These pads prevent vibrations from transmitting from the air conditioner to the floor and walls. They usually come in a set of four and can be placed under each corner of the unit.

That will help significantly lower your portable air conditioner’s noise level.

In addition, it will also make it more stable so that it does not shake as much when in use. Consider investing in anti-vibration pads to reduce the portable air conditioner’s noise.

They are relatively inexpensive and can significantly affect how well your unit works.

Plus, they will also prolong their life by preventing damage from vibrations.

Use A Portable Air Conditioner Silencer

With a portable air conditioner, you know how loud it can be. Some people say they can’t sleep with one running in their room. 

But there are ways to silence your portable air conditioner so it doesn’t bother you or your neighbors.

It is possible to do so by purchasing a portable air conditioner silencer. These devices attach to the exhaust hose of your unit and help to muffle the noise. 

Even some models come with a timer, so they can automatically turn off after a certain period.

Alternatively, you create your DIY silencer. It can be done by wrapping the exhaust hose in insulation or placing it inside a cardboard box.

You’ll want to ensure no gaps or holes in your makeshift silencer so that all noise is trapped inside.

If you need help finding that your portable air conditioner is too noisy for comfort, give one of these methods a try.

Using A Sound Blanket For Ac Portable

A portable AC sound blanket can be a great way to help reduce the noise coming from your portable air conditioner. 

Using a sound blanket can help muffle the compressor’s sound and make it more bearable for yourself and those around you.

Here are some tips on how to choose and use a portable AC sound blanket:

  • Look for a sound blanket specifically designed for air conditioners. That will ensure that it fits properly and does not impede airflow. 
  • Ensure the sound blanket is constructed from thick, sturdy material that won’t tear easily. Something that will last through multiple seasons is what you need.
  • Choose a sound blanket in a neutral color, so it does not stand out too much when in use. 
  • Install the sound blanket as directed by the manufacturer.

It is usually wrapped around the air conditioner unit and secured with Velcro or similar fasteners.

Use A Fan And Set Your Portable A/C Farther Away

Setting your portable A/C further away from you and using a fan can help make it quieter. Noise will only bother you a little.

And the sound will travel less easily through the air. Additionally, it will help cool the room more evenly.

Replace Or Clean Air Filters

Check your air filter as soon as you notice noise from your portable AC unit. Your AC unit will work harder and make more noise if you have a dirty or clogged air filter.

Using a soft brush attachment, vacuum your air filter after removing it from the unit. If the filter is very dirty, you may need to wash it with warm water and mild soap.

Put the filter back in the unit after it has dried. Also, clean the condenser coils and fan blades. 

A build-up of dirt and dust can make your AC unit work harder than necessary, increasing the noise level.

It may be necessary to replace your air filter if it is damaged or excessively dirty. You can purchase replacement filters at most hardware stores or online retailers.

What Makes A Portable Air Conditioner So Noisy?

Most portable air conditioners are quite noisy, which can be a major downside if you try to use them in a small space.

Portable air conditioners can be noisy for a variety of reasons. The compressor, fan, and exhaust all work together to cool the air, so any issues with these components can make your AC unit louder than usual.

Let’s look at each potential cause of the noise.


AC units circulate refrigerant through the compressor. If there is an issue with the compressor, rattling may occur.


The fan helps circulate air over the evaporator coils. If the blades are unbalanced or damaged, they can create a humming or grinding noise. If the fan motor fails, it can also make your AC unit noisy. 


The exhaust vent expels hot air from the AC unit out of your window. If the vent is blocked or restricted in any way, it can create a loud banging noise as the hot air tries to escape. 

Also, if the exhaust hose comes loose from the air conditioner or window, it can make noise and make the air conditioner work less well.

What To Do And Don’t To Make Your Portable AC Quiet?

Portable air conditioners are great for keeping your home cooled and comfortable. However, if you keep them turned off at all times, they can stay quiet. 

Now I will share some tips on what to do and don’t to make your portable AC quiet. 

Let’s start. 

  1. Don’t use a cheap air conditioner – If you’re looking for a quiet portable air conditioner, don’t go for the cheapest model you can find. Cheap models are noisy and won’t provide much cooling.
  2. Avoid using the AC on high – If you need your portable air conditioner on a hot day, try to avoid cranking it up to the full blast. Running the AC on a lower setting will help keep noise levels down.
  3. Place the AC in a strategic spot – The location of your portable air conditioner plays an important role in how loud it is. Try putting it in a corner or other out-of-the-way spot to help muffle the noise.
  4. Keep the filter clean regularly. A dirty filter will cause the AC to run less efficiently and make more noise.
  5.  Invest in soundproofing materials – If you want to reduce the noise from your portable air conditioner, invest in soundproofing materials like acoustic foam or blankets. Noise levels can be reduced greatly with these devices.

Related Questions With Answers

Here, I’ll answer some questions about how to make a portable AC quieter.

Q. What is the reason for the sound my air conditioner makes?

A. You may hear a sound from your air conditioning unit similar to running water. It’s probably because too much condensation hasn’t been drained properly, so the drip pan is full. 

Q. Is it normal for the AC to make sounds?

A. After completing a cooling cycle, your air conditioner will likely make clicking noises. It’s normal to experience this. 

Those sounds are the machinery stopping. An object stuck in the fan assembly, or a failing thermostat can cause a constant clicking noise.

Sum Up

This guide has given you some useful advice on how to make a portable AC quieter. 

Whether it’s proper installation and maintenance or using soundproofing materials, there are plenty of ways to reduce the noise levels in your home or office.

If you need help understanding why your AC is making noise, it’s better to hire a professional to diagnose and fix the problem. 

Please leave a comment below with any additional questions or ideas you may have about the topic. 

Thanks for reading, and happy cooling.

John Perkins

Born in the Texan tapestry, John is your gateway to serenity. Explore his expert insights for quieter living. Discover more blogs for a harmonious haven at Soundproof Point!

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