But when it runs too long or too loud, there may be another cause to consider. If your MacBook's fan is running too loud for too long, and too frequently, you may have a problem. For the most part, fans are a part of laptop life. Humans sweat, dogs pant and laptops generally spin fans to keep cool. Unless you have the tiny, fanless MacBook , then your MacBook Pro or MacBook Air will occasionally fire up its cooling fan to keep its thermals in check.
But your Mac's fan has gone from occasionally spinning to regularly and loudly spinning, you'll want to slow its roll or whir, as it were. There are five proven ways to do this, and it might be that you need to go through all of these steps until your fan finally calms down. Whatever you do, don't ignore the problem. Set aside a little time to genuinely focus on your fan health, and you'll continue to get a lot of quality life out of your MacBook -- without it sounding like you're at the airfield.
Read more: Best MacBook Air alternatives for The more apps and browser tabs you've got running, the greater the odds are that your Mac will need to employ its fan to keep things cool.
Cut down on your multitasking by closing apps when you are done using them, especially when you are using graphics-intensive apps like Photoshop and iMovie.
Many third-party utilities in the App Store lets you monitor components, check the hard drive temperature using SMART technology, and review overall system health. We'll cover only those apps that have specific features to monitor and control the fan speed. Macs Fan Control is a utility that lets you monitor fan speed and temperature sensors.
Right upon launch, you can monitor fan speed. Though a helper utility is necessary for controlling the fan speed, the interface is intuitive and easy to navigate. The left pane shows the fans and their speed in RPM revolutions per minute. Meanwhile, the right pane shows the temperature of each thermal sensor. To take control of a fan, click the Custom button next to the fan and select how you want to control it. With this, the fan will spin at the desired speed regardless of temperature and sensor values.
In the Sensor-based value option, you get to select a sensor and define the temperature at which the fan speed will increase.
If you notice high CPU temperature over 80 or 90 degrees Celsius , and the fans aren't running right, you might have a hardware issue. The basic features of the app are free, but the Pro version lets you set custom fan presets. TG Pro is another utility that lets you quickly view CPU, GPU, and hard drive temperature, as well as checking battery health and other hardware parameters.
You can also keep track of and control the fan speed, run diagnostics, and generate a complete report for the fans. The causes for either of those problems can differ, but they could also be the same. Another possible cause is if something is causing your MacBook to use its GPU graphics card with greater intensity than usual. Laptops, in general, are known for overheating much more easily compared to desktop computers, and this becomes especially apparent when their GPUs are being used at high intensity since the latter tend to emit lots of heat.
One more thing to factor in is the age of your Mac and, respectively, its fan. For instance, a MacBook that is already several years old and has seen frequent use is expected to start making more noise with its fan. A possible MacBook fan always on fix is to check what apps are using the most CPU and battery life, and stop them.
After that, select Memory and then Energy and see the most resource-intensive apps shown there. Doing this will help you figure out which app s is using the largest amounts of system resources — stopping that app should help with reducing the amount of heat that the MacBook emits and, in turn, lower the speed at which the fan is turning.
You can stop an app from the Activity Monitor by selecting it, clicking the X in the top left, and then clicking on Quit. As we mentioned earlier, heavy GPU use is what typically raises the MacBook temperature the most, so it is suggested that you first quit the apps that are using the most GPU. The System Management Controller SMC of your MacBook is a system responsible for controlling many different components and aspects of the computer, including the power management and power supply, the keyboard, and the cooling fans.
Ask Different is a question and answer site for power users of Apple hardware and software. It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search. The fact that fan 2 is not spinning worries me.
I can get 'loaded' fan speeds and temps if that would be helpful. I sent the mac off to be fixed and it turned out to be something stuck in the right fan causing it to not move!
Looking at my fan speeds now: left: rpm right: rpm seems consistently slower so maybe slightly damaged :L. This resource which can be filtered clearly shows that your CPU temp at However, the fact that your stats indicate only one fan is spinning warrants further investigation. I would run an Apple Hardware Diagnostics to see if it finds any errors. To do this:.
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