Why is my Mac fan so loud? Overheating issues?

Why is my Mac fan so loud Overheating issues

If your Mac is beginning to sound like it has a jet engine revving up inside it, that isn’t only annoying, but it may also be an indication of something going wrong. There could be a problem that causes your Mac to overheat, or you might have a faulty fan. Here’s what to do if your fans keep humming away even when your Mac is cool to the touch.

Why is my Mac fan so loud? Overheating issues?

The fact that your fans are on full blast isn’t an indication that something is wrong with your Mac, because the reason they’re there in the first place is to improve air circulation around the components by lowering temperatures inside.

If you’re running computationally demanding programs like high-definition video editors or top-of-the-line games, your Mac will be working hard, generating heat. When the temperature rises beyond a certain level, the fan sensor detects it and immediately spins up the fans to assist keep the system from burning itself out. So, if you notice that your fans are on full blast, it doesn’t necessarily mean that there’s something wrong with your Mac.

In reality, the fans should be off or barely turning most of the time under normal circumstances. If your Mac is working hard to keep cool and you have to think about upgrading it or taking additional measures to improve airflow, then your fans are running constantly at top speed.

One way to help keep your Mac cool is to make sure that there’s plenty of airflow around it. You can do this by keeping it in a well-ventilated area and by regularly cleaning the fans and air vents. Another thing you can do is to make sure that your Mac

1: Check the CPU usage

When the CPU is under a heavy workload, such as with the activities listed above, Mac fans will usually come on as a precaution. However, if you’re not sure what’s causing your computer to spin up its cooling fans, open the Activity Monitor and look for programs that are using all of your CPU resources.

To shut down the computer, press and hold the CMD key and Space Bar at the same time. To access Spotlight, hold down the CMD key and press space. Search for Activity Monitor and choose it from the list that appears. Make sure that the CPU tab is selected; then look at which applications are near 100% CPU utilization.

2: Your room temperature

When examining a problem with fans, it’s vital to take into account the surrounding environment. If it’s a hot day and there is no air conditioning in your home, or if you’ve turned up the heat in your room, the ambient temperature might have an unfavorable impact on your Mac’s performance.

At 10 to 35 degrees Celsius, the ideal room temperature is between 10 and 35 degrees Celsius. If the environment you’re in is hotter than 35°C, go somewhere else or cease utilizing your Mac. When using intensive software, this might be a lot more difficult; because it’s much harder for fans to lower the computer’s temperature if the room

If you can open a window, turn down the thermostat, or use a room fan to move air around, your iMac, Mac mini, or other Mac should be able to handle it better.

Related: Why Is My Laptop Fan So Loud?

3: Check to see if the air can flow freely.

If your computer is placed directly on the surface, there’s a good chance that the air won’t be able to circulate it. We recommend using a dedicated MacBook stand because it will at least allow air circulation beneath it. Using a stand will raise the Mac off of a desk or lap and improve ventilation around the chassis by keeping it clear of the desk or your body.

4: Shut down unused apps and processes.

Your Mac can handle only so many things at once, and if you have too many programs open, it will work harder and generate more heat. Close any programs that you’re not using, especially ones that are taking up a lot of processing power in the background (Spotify, for example, can run in the background even when you’re not using it). You can also use Activity Monitor to see what’s going on behind the scenes and shut down any processes that are taking up too much CPU time.

5: Check to see whether any of your vents are clogged.

On a MacBook Pro, vents can be found along the back edge (where the display hinges are located) and around the sides just beyond the USB-C ports, while on a MacBook Air, they’re all concentrated along the top edge of the casing near the hinges. The vents on Mac Minis should be checked at the bottom of the device since it doesn’t have an internal fan. If you see any dust or lint buildup, it’s best to clean it out using a can of compressed air.

6: Disable App Nap on apps you know are causing problems.

App Nap is a power-saving feature that was introduced in OS X Mavericks back in 2013. It’s designed to help prolong battery life by putting apps that aren’t currently in use into a state of deep sleep. While App Nap can be a great way to conserve power, it can also cause problems for certain types of apps. If you’re noticing poor performance or choppy audio playback, disabling App Nap for those particular apps may help.

7: Reset the SMC

If you’ve gone through all of this and still have an issue with your Mac heating up, resetting the SMC (System Management Controller) may be the answer. This is usually considered to be the last resort for resolving most Mac issues before going to the Apple Store. Here’s how to reset the SMC.

How can I clean my Mac’s fans?

It’s not unusual for fans on a Mac to become clogged over time with dust and other debris, which can contribute to the noise they produce when spinning. If you have a can of compressed air and a screwdriver, you may clear any detritus that has built up in the case and fans by following these simple steps:

1. Shut down your Mac and unplug it from the power outlet.

2. Remove the screws on the back of your computer that secure the cover.

3. Carefully remove the cover and set it aside.

4. Use compressed air to clean out any debris inside your Mac’s case and around the fans.

5. Replace the cover and reattach the screws.

6. Plug in your Mac and turn it on.

If you find that your Mac’s fans are still noisy after cleaning them, you may need to purchase a new fan or have a technician replace the old one.

It’s best to avoid touching any of the circuitry or getting any wires stuck in your hair since a static charge might damage the processors or other important components. It’s also worth calling Apple right away to ensure that this will not affect your warranty.

If you are having issues that needs to be addressed with your Apple device, our mac experts are just a phone call away!

I am a computer engineer holding a bachelor's degree in Computer Science, complemented by a Master's in Business Administration from University of Strathclyde, Scotland. I currently work as a Senior IT Consultant in Melbourne, Australia. With over 15 years of...