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Sounds That Signal Your AC Unit is Failing

During the sweltering heat of the summer months, there are very few pleasures that can rival coming home to a perfectly cooled oasis when you walk through the doors of your home. On the flip side, there are very few feelings that can rival the disappointment of walking into a home just as hot as it is outdoors. Before you find yourself saddled with a failed AC unit, pay attention to the sounds and signs that it is giving you.

Some noises coming from your AC unit are a normal part of a machine functioning. However, there are key sounds that you should keep an ear out for that can be indicating a deeper issue that can lead to a broken machine that is costly to fix or worse, beyond repair.

Clanking and Banging

These loud clanking and banging sounds are usually a sign of a problem with the blower assembly or motor. A rattling sound typically indicates that a piece within the AC unit is loose or disconnected. You should seek the help of your HVAC professional to prevent the piece from completely coming loose and causing expensive damages. If you hear a loud banging sound, a piece has likely disconnected and will need to be seen as soon as possible.

Thwap or Hitting

A loud hitting or smacking sound coming from your AC unit when the blower is on is a sign that something may be stuck to one of the blades. If there is nothing attached to the blades, there may be something in the structure of the unit making contact with the blades as they spin.


While a clicking sound is normal and expected when you are turning the AC unit on and off, a consistent clicking sound while the unit is in use may be due to a defective relay.

Listening to your AC unit is essential to making sure that your it is working properly, running well, and keeping your home the cool oasis you need to end your day. If you hear a sound that is out of the norm, contact your HVAC professional. For professional furnace repair or ac repair services, contact Access Heating and Air today !

CALL TODAY – (540) 710-5754

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About Our Company

At Access Heating and Air, LLC we’ll give you the attention and personal service you expect and deserve. If you’re looking for high quality service, you’ve come to the right place. We not only help with your heating and air conditioning needs, but we also take care of your entire climate! We are proud to offer top-notch maintenance contracts. Ask us for help.

We offer quality service, maintenance, repair and installation on all heating and air conditioning systems…any make or model. Our rates are competitive, with no hidden fees. All employees are very informative and will be there to help you every step of the way. We are the best in this business and to prove it, we back our work with a free one-year warranty guarantee.