Tips for Silencing a Noisy Air Conditioner

By Justin Graves , last updated April 21, 2011

While an air conditioner can provide great reprieve from heat and humidity, it can also become a noisy annoyance if functioning improperly. Luckily, there are several steps you can take to reduce the noise levels of your air conditioner. Whether you're experiencing a loud buzzing noise or a high-pitched whining, you should be able to find a way to silence the noise. First, you'll need to determine whether the noise is coming from the mounting of the air conditioner or from the air conditioner itself. To begin, you should check to see if your air conditioning unit is loose and if it is loose, you will need to tighten it. After tightening and securing your air conditioner, you can also place shims around the air conditioner to reduce rattling and movement. If after following these steps, your air conditioner continues to make loud noise, you will know for certain that the noise is originating from within the air conditioner and additional steps will need to be taken.

The first thing you'll need to do is remove the air conditioner from the window or wall. Then, pop off the front panel of the air conditioner and inspect the inside fans for any grime and dirt. If you notice that the fans of your air conditioner are dirty, you'll need to clean them thoroughly. After cleaning the fans, if the noise continues, you may have a bad compressor. At this point, you may wish to take your air conditioner to a licensed professional or replace the compressor yourself. Keep in mind that in some circumstances, it is cheaper to replace the air conditioner than to have it repaired so you'll want to get a price quote before agreeing to any potential repairs to your air conditioning unit.

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