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Ideal Services Heating & Cooling Blog

Why Does My AC Sound So Funny?

covering-her-earsWant to know something cool? One of the easiest ways to tell that you’ve got a problem with your air conditioner is by listening to it! And no, we don’t mean sitting down over a cup of coffee and having it explain its troubles to you…

You see, your air conditioner is not inherently noisy. In fact, the only sound you should ever hear coming from your system is the sound of air gently whooshing through the vents. Therefore, any other sounds, like the ones that don’t quite qualify as “background noise”, are definitely a cause for concern. So below, we have listed some of the sounds you definitely don’t want to hear from your system and what they might mean. Keep reading to find out more!

Some Strange Noises!

Like we mentioned above, there are a number of sounds that you don’t want to hear coming from your air conditioner. These include:


Otherwise known as the sound of metal on metal, this sound can be indicative of a variety of motor problems. The most likely culprit is motor bearings that have worn down. If these bearings fail, it can end up permanently damaging your motor if you’re not careful. Therefore, it’s important to call for repair right away!


Grinding is another sign of motor problems, often from too much dust build-up or too little lubrication on the components. If this sound is paired with an acrid odor from the vents, we recommend shutting down your system and contacting a professional for repairs ASAP, as your motor is likely overheating.


Rattling can be the result of a variety of issues. For instance, it can be from a minor problem, like a loose cabinet door. It might also indicate that a component of your AC has come loose and is being knocked around. Fortunately, a professional will be able to diagnose the issue and repair it accordingly.


A hissing sound is almost always due to a refrigerant leak. This sound is one of the earliest signs of this problem — indicative of high-pressure gas escaping from the lines.  If you hear this sound, it is important that you call for repairs right away, as a refrigerant leak can lead to all sorts of other issues!


You may hear a clicking sound when your system starts up and when it cycles down. These clicks are normal. What’s not normal is the consistent clicking or a “hard starting” air conditioner. This means that the system is struggling to power the compressor, which is definitely something you want to be fixed right away.


Though this noise can be rather loud and alarming, it’s probably something like a loose fan belt or a bent air handler that the fan blades are knocking into. If you hear this sound, it’s in your best interest to shut down the system before there’s any more damage to it.

To schedule your Garner, NC HVAC services, give our team a call! Contact Ideal Services Heating & Cooling today! 


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