5 Reasons Why Your Air Conditioner Makes Strange Noises

As the weather gets warmer, many of us start thinking about how to keep our homes cool and comfortable during the hotter months. One option is to use an air conditioner, which can help to regulate the temperature inside your home and make it more comfortable. 


However, if you’ve ever heard a strange noise coming from your air conditioner, you know it can be quite unsettling. After all, your air conditioner is supposed to be a source of comfort, not noise! So, why is it making that weird noise, and what can you do about it?


There are a few reasons why your air conditioner might be making a weird noise; we’ll discuss them in this article. 

1. Fan Blades Are Hitting Something as They Spin

If you hear a rattling noise, something is likely hitting the fan blades. This could be because the blades are damaged, unbalanced, or bent. If the blades are damaged, you’ll need to replace them. If they’re unbalanced, you can try adjusting them. And if they’re bent, you can try straightening them.

2. Buildup of Dirt and Debris

Over time, the buildup of dirt and debris can cause the unit to vibrate and create all sorts of strange sounds. The good news is that you can usually fix this problem simply by cleaning the unit.

3. Frozen Air Conditioner

You’ll likely hear a loud, banging noise if your air conditioner is frozen. This is caused by the ice on the evaporator coils expanding and contracting as it melts.


To thaw a frozen air conditioner:


1. Turn off the unit and let it sit for a few hours.

2. Once the ice has melted, clean the coils with a brush or vacuum to remove any debris.

3. If the unit is still not working properly, call a professional for assistance.

4. Wear and Tear on the Motor

If your AC unit is making a grinding noise, it’s likely a sign of wear and tears on the motor. The motor is responsible for powering the compressor, which is what circulates the coolant through the unit.  


Over time, the motor can start to wear down, causing it to make a grinding noise. This serious problem can lead to further damage to the unit. Hence it’s crucial to contact a qualified repair technician as soon as possible. 

5. Leaking Refrigerant

If your AC unit is making a hissing noise, it could be a sign of a refrigerant leak. Refrigerant leaks can cause several problems, including decreased efficiency, increased energy costs, and damage to the unit itself.


There are a few signs that indicate a refrigerant leak:


– Your air conditioner unit is not cooling as efficiently as it used to.


– You notice an increase in your energy bills.


– A hissing or bubbling sound is coming from the unit.


If you notice any of these signs, you should first check the unit for any visible signs of leaks. If you see any, it is important to contact a professional for repairs as soon as possible.


Attempting to repair a refrigerant leak yourself can be dangerous, as it requires working with chemicals that can be harmful if not handled properly. 


There are several possible reasons why your air conditioner may be making strange noises. These include the fan hitting something inside the unit, dirt and debris buildup, frozen air conditioner, wear and tear on the motor, and leaking refrigerant. If you’re unsure what is causing the noise, it’s best to contact a professional for help.


At Good Guys Home Services, we provide a wide array of air conditioning services including routine maintenance and emergency repairs. We’re here to help keep you and your family comfortable all summer long! Contact us today to learn more about our services.


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