Best Tips to Troubleshoot a Loud Mac Fan Noise

Loud Mac

Macs are quiet and fast computers, and these are only two benefits that make so many people like them. 

Many professionals who work in different fields choose a Mac because of its great performance and efficiency. Unfortunately, when you purchase a Mac, you can not be 100% sure you will not experience some technical issues like a loud fan noise.

In fact, loud fan noise is a pretty common issue that many Mac owners experience at least once. Thus today, we will share great tips to troubleshoot this problem.

Tip #1: Check Free Disk Space

Having enough disk space is necessary for many reasons. For example, if your Mac’s disk is full, your computer will become much slower, and you may even lose some important data because your computer will have no extra space to save it.

More to it, having less than 10% of free disk space on a Mac might also cause a loud fan noise because it will be too difficult for your computer to deal with the overflow of the memory usage. 

To check how much free storage space you have left, click on the Apple icon on the left side of your screen, choose About This Mac, and click on the Storage tab. After a minute or two, you will be able to see how much free disk space you have and how much of the disk space is taken up by various types of files like photos and documents.

Tip #2: Uninstall Apps You Do Not Use

If you have noticed that apps take quite a lot of space on your computer when you are checking the storage data, it is time to review the apps you have installed and delete the unneeded ones.

The fastest way to do it is by clicking the Launchpad which is located in your Dock and going through all the apps. 

Tip #3: Clean Your Desktop & Empty the Trash Bin

A cluttered desktop will slow down your computer because each thumbnail you have there is using additional resources. Therefore a slow-performing Mac may cause a louder fan noise. Also, if you have a lot of files on your desktop, they might be taking up quite some storage space. 

Afterward, do not forget to empty the Trash Bin. It does not matter how many files you delete, they will still be kept there.

Tip #4: Ensure a Cool Environment

A perfect environment temperature for a MacBook is between 10° and 35° C. If you live in such a part of a world or in such conditions where the weather is hotter than that, you will most likely encounter the issue of a loud fan noise because the computer will try to cool itself down.

If you want your Mac to function properly in such hot air conditions, you need to look for solutions like investing in a cooling pad for your MacBook.


Tip #5: Ensure a Good Air Circulation

If your Mac is close to overheating because of insufficient disk space or the number of apps that are currently running, having bad air circulation could be the last that causes loud fan noise.

To ensure the best air circulation possible, never cover MacBook’s air vent with anything. MacBook Air and MacBook Pro have different air vents, but either way, do not place your computer on such objects as pillows and do not place stickers on the air vents. A specialized stand for Mac could help out as well.

Tip #6: Reset the SMC

Resetting the SMC is an often solution when a Mac is experiencing technical issues that can not be solved in any other way. To start the resetting SMC for a Mac with a removable battery, turn your computer off at first and plug in the power cord. Then, press the power button and Shift + Control + Options keys. 

If your Mac has a non-removable battery, unplug the computer from the power source at first. Then, shut down the computer, repeat the keyboard shortcut with the power button, and regularly turn on the MacBook.

Tip #7: Keep It Clean

The more dust and dirt you have on your Mac and in the environment, you are using it in, the more filth your computer will gather inside it. And it is not good for the fans because they will get dirty and start working slower and louder. If you can, open the laptop and clean the inside of it as well.

Tip #8: Check Activity Manager

Checking the Activity manager will help you build a better understanding of which of your apps are using the most of your system’s memory resources. And if some of those apps are using more resources than they are bringing benefits, then maybe it is best to quit them or even uninstall them and look for a better alternative that is more CPU-friendly.

To check the Activity Monitor, use the Spotlight Search. You will find the Spotlight Search by pressing the magnifying glass icon in the upper right corner of your screen or by using the keyboard combination Command + Space. When you open the menu, look at the CPU tab. It will show you which apps are using the most of your system’s memory resources. 

Tip #9: Run Apple Diagnostics

If your favourite laptop is often overheating, it can negatively affect your fans, battery, and the entire device. One day you may be surprised when your Mac suddenly shuts down just because the fans could not withstand the accumulated heat and cool down your computer.

If you are experiencing anything similar to this issue, it would be smart to run Apple Diagnostics that will help you determine the problems that are causing your Mac to overheat. 

First, remove external devices like the keyboard or speakers, then restart the computer, and while your Mac is restarting, hold down the D key. Let go of the key when a list of languages appears on the screen. Select your language, and the Apple Diagnostics will start running automatically. 

If nothing helps, it might be that you are dealing with a cybersecurity threat and will probably need to get help from professionals.

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