Is Your AC Fan Making Weird Noises? Here’s What To Do

For over 3 years, we give homeowners the peace of mind that comes with a comfortable home

ac fan
Blue tone of HVAC (Heating, Ventilation and Air Conditioning) spining blades / Closeup of ventilator / Industrial ventilation fan background / Air Conditioner Ventilation Fan / Ventilation system

Summer is in full swing, and it’s more important than ever to make sure that your AC and AC fan are working properly!

Having a functional air conditioning unit is the key to keeping your home cool and comfortable all summer long, but what happens when your AC fan is making weird noises? What AC sounds are normal, and what noises are indicative of a further issue that could put your home at risk of being without a functional cooling system? Keep reading to find out!

If you’ve begun noticing any unusual noises coming from your air conditioner, it is important to get to the root of the problem right away. Ignoring any weird or mysterious noises coming from your AC can lead to additional problems – and significant expenses – in the future. While some noises indicate minor issues that can be quickly resolved, many might require the help of an HVAC professional to diagnose and repair the problem. 

Some weird noises to watch out for include:

Loud Banging Noises

If you’ve noticed that your air conditioning unit is making a loud noise that sounds like banging, it could be an indication that something in your system is loose or otherwise broken. This is common in older AC units or those that have experienced natural wear and tear over time. To resolve this issue, it is best to call an HVAC professional to re-install or replace any broken parts. 

Clicking Sounds 

While most air conditioners make faint clicking noises during normal use at the beginning and end of a cooling cycle, this should not be a sound you hear constantly while using your air. Unusual clicking noises could indicate errors with electrical signals, thermostat issues, an obstruction in airflow, and more. If an obstruction is the cause of the clicking sounds you are experiencing, wiping the unit’s interior fans clean might help. If this does not work, however, or if you believe that the clicking noises result from another issue, it might be time to contact your local HVAC experts to resolve the problem. 


If you have not kept up with routine maintenance of your air conditioning unit, you might notice that your AC is making a loud buzzing noise. This is often the result of loose or misplaced parts, debris clogging the unit, or air filters and other parts needing to be cleaned or replaced. In this case, it is best to contact a professional to conduct routine maintenance and get to the root cause of the problem.

Squeaking or Squealing 

If your air conditioner makes squeaking or squealing sounds while in use, this could indicate an air pressure issue. Some older AC units might naturally be squeakier than others as a result of use over time; however, if your air conditioner is making abnormally loud, constant squealing noises, it might be time to contact a professional to diagnose the issue.

These noises, and more, might seem like no big deal, but abnormal sounds can be the first indicator of problems with your air conditioning unit that need to be resolved in order to avoid difficult or costly repairs in the future. 
If your air conditioning unit is making weird noises, the HVAC experts at Confident Comfort can help diagnose and resolve the problem so you can keep your home cool and comfortable all summer long. Contact us today to learn more about our services or to get a free pricing quote from a member of our team!