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Quieting Air Compressor: How to Make A Loud Air Compressor Quieter

Air compressors are machines that can come in handy in various situations, and every home should have one.

You can never know when you might need one.

Since they are so useful and it is always good to have one, a lot of companies developed on making air compressors.

And since there are so many of them, you can get them for fairly reasonable prices.

They can serve you well for long, but there is often one thing that they lack in, and that is the noise they produce.

It seems to me that the lower the price, the louder the compressor you will get.

I know that spending a fortune on air compressors is not a solution, but getting loud ones and having your eardrum pierced is not a solution either.

I have done a little research and if you are looking for a solution to make your air compressor quieter, I hope that I can help you!

There are some easy solutions to your problem, and you will be able to forget that you even have an air compressor in no time.

But, before we start with the solutions, let’s give a quick look at air compressors and what makes them noisy.

Quieting Air Compressor

How Loud Air Compressors Are 

If you want to know how loud your air compressors really are, you can always use one of these decibel meters.

Decibels are measures of sound that can be heard by a human ear, and this meters would count how loud exactly some sources of sounds are.

To be able to fully understand decibels completely, here is a nice illustration that can show you some basic frames of noise that certain things can produce.

If we apply the knowledge from this chart, we can say that an air compressor that makes a sound as loud as 80 dB or louder, is a noisy one.

And if it produces a sound that is lower than 75 dB we may consider it a quiet one.

Most of the compressors would range somewhere between 70 dB and 90 dB, but if they are not specially designed to be quiet, the noise they make will more likely be around 80-85 dB; which is not that quiet, to begin with.

Of course, it is not necessary to use a decibel meter, but if you want to know what kind of progress you made with your sound insulation, why not!

Why Are Air Compressors Noisy?

There are a lot of factors for your air compressor being so loud, but some of the most common ones are vibrations, exhaust noises, and intake noises.

If they all happened to occur at the same time, it is surely not so good for your ears, and your peace and quiet.

Here I have listed a few main things that make your air compressor loud:

  • Vibrations – The vibrations coming from a compressor do not make that much of a noise itself, but they can sure make it seem like there is a lot of it. In general, vibrations depend on the structure of your air compressor, and on where it is placed. If there are a lot of shallow and hollow parts on your compressor, it will be producing much more noise from vibrations. Same stands for positioning it on something weak and shaky.
  • Where it is placed – Once again, it is important to say that the surface your air compressor stands on is very important for the amount of noise it makes. Not only that shaky things can make it loud, but things like hardwood or concrete floor can also produce echoes and, therefore, additional noise. It would be the best to put it on a rubber mat like this, or soft ground if you have a chance.
  • Materials it is made of – This one is kind of self-explanatory. If the compressor is made of higher quality materials that are dense and thick, it will produce much less noise than if it is made of some lower quality materials that are rather thin.
  • Intake – This intake component is considered to be one of the loudest components of an air compressor. Similar to a vacuum cleaner, an air compressor sucks air to be able to work, and while doing so, it makes a lot of noise.
  • Exhaust – This is also one of the louder components on an air compressor It lets go all of the byproducts from the machine.
  • The type of air compressor – If you are using a big air compressor with huge power, it is highly probable that it will be making a significant amount of noise. On the other hands, there are some air compressors that are specially designed to be quiet, and if you need a whispering one, you might do your search and find a good quiet one.
how to make an air compressor-quieter

How to Make an Air Compressor Quieter

Now that you know a bit about the structure of air compressors and what makes them loud as they are, we will give a look at a few do-it-yourself methods for making them quieter.

If it is not a compressor that is specifically designed to be quiet, there are not much of products that can help you, but there surely are some methods that can be used.

What you can do to make it quieter is:

  • Cover some parts of your air compressor with rubber to reduce vibrations and make it quieter, even motor;
  • Changing the ground it stands on or covering it with a rubber mat;
  • Modifying the intake and exhaust systems on it;
  • check
    Rethinking getting a quieter one.

1. Installing Rubber on the Air Compressor’s Motor

It is well-known that rubber is a very good sound insulator, so it is good in the process of making your air compressor quieter as well.

Thick rubber is an amazing sound absorbent and sound dampener, so when it comes to the impact noise and the shock coming from it, rubber is more than excellent. In other words, it absorbs the energy from the impact and doesn’t let it make an echo.

The best way to reduce the noise coming from your air compressor is to install rubber grommets on the motor itself. In this way, the vibration from a working motor will be absorbed into the rubber, and the noise spreading from it will be lower.

There is a nice and useful rubber grommet set (this!) that you can purchase and it comes with a lot of different sizes of grommets, so you can choose the right one for your compressor.

Nevertheless, you will be able to use the rest on something else; since I believe that you are a handyman (or a woman).

If you decide to try this method, here is a video guide on how to install rubber grommets:

2. Extend the Air Intake to the Outside

This method would mean that you should take the intake component on your compressor somewhere outside of closed spaces.

In most of the cases, your air compressor would be placed somewhere in your garage, basement, or garden shed, and the same stands for its intake part.

Since I already mentioned that this is the one making the most of the noise, it is very common that it would be so loud anywhere near it.

The best way would be to place the intake outside so that the compressor sucks air from an open space, and not a closed room in which it would become so loud.

Everything that you will need for this project is:

What you will have to do here is push the hose into the compressor’s intake very tightly, and fasten it with a bracket to keep it in place.

Now, you just have to take that hose somewhere outside, and fix it to stay there. You might need to make a hole, or you can use an existing hole if there is any.

Furthermore, you can use some of the rubber grommets from the set that you have left to secure the hose even more, and bring the amount of noise down to another level.

3. Put a Muffler on the Intake

This is a method for which you will need two heavy duty air hoses and a muffler like this.

You should connect the one end of an air hose to the intake and the other one to the muffler, and it back to another one of these hoses.

I know that not everyone has a spare muffler lying around, but it is surely an investment to make.

This method can help you reduce the sound of your air compressor to up to 4 dB.

And here is a video to demonstrate you this technique:

4. Buying a Quieter Air Compressor

Another thing that is always an option is purchasing a new and quieter air compressor.

If you are not that willing to undergo these do-it-yourself projects and are on a budget, you can simply give a look at some of the specially designed air compressors that are supposed to be quiet.

For example, here is an air compressor that makes make noise less than 60 dB; 56 dB to be precise!

Now isn’t that something to look for in a compressor? And, it is not that expensive either!

So, if you have a few spare bucks, I would definitely recommend one of the specially designed air compressors. Click here for our list of the quietest air compressors in the market.

On Quieting Air Compressor

It is certain that air compressors can be very loud, but luckily there is always a way to fix it.

If you are not ready for getting a new one, then some of these simple methods can help you reduce the noise.

Of course, it is impossible to not hear it at all, but bringing it down for a few dB can surely make an important change.

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