Preparing to Soundproof Your Air Conditioner

Air conditioners are definitely lifesavers when the temperature is sweltering. The only complaint that most people have are that they are quite loud. Sure, today many air conditioners are built to be “quiet” and make as little noise as possible but it’s nearly impossible to completely get rid of the sound that they make when running. From inside your home, the noise may not bother you because it is just another sound that the house makes but when you’re outside; you might find the noise to be a bit of an annoyance.

To give yourself and your neighbors a little bit more cushion from the noise and a little more peace and tranquility outdoors, you might consider finding a way to soundproof that air conditioning unit. It doesn’t have to be an eyesore either. If anything, you can actually give your home a little more curb appeal while you decrease the amount of noise coming from your air conditioner because you can decorate or paint the container you build however you like.


You don’t have to spend a lot of money or hire professionals to help you with air conditioner soundproofing. It can actually be quite a simple process. The first thing you will want to consider is construction of a sound barrier. You can use wood or building materials to create the actual enclosure but you should also make sure you have measured how much material you will need to correctly enclose your air conditioner. You should then get some mass loaded vinyl to use on the inside of your barrier, construction adhesive and acoustical caulk to take care of any cracks or uneven spaces between your sound barrier materials.

You’ll probably want to build a construction in an “L” shape that’s at least 8 feet tall. Make sure that the shorter part of your construction is built to be about 3 to 5 inches away from your house. The longer part can be as long as you wish to make it but shouldn’t go beyond the size of your house. Use construction adhesive to apply the mass loaded vinyl to your construction on the inside, facing the air conditioner. Then, use the acoustical caulk to fill in any gaps or seams in between the vinyl.

Another alternative is to use Green Glue to create a sound proof layer between your original barrier and a second layer of dense material (like another layer of wood or drywall). Green Glue prices are relatively low, so utilizing this method may prove very cost effective.

Finish up your project by painting the exterior of your sound barrier construction to match your house or in any design that you like. It will be noticeable, but if you try to blend the colors with your home, it won’t stand out as much. This shouldn’t take you more than a few hours to a day to make and your neighbors will thank you for it and you can enjoy some peace and quiet outside!

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