What causes these heat issues? Does it affect the i5 model as well as the more powerful i7? The fan is loud! Thanks to Rajulun for sharing this view with Mac Crazy — you are a star! The exhaust port is behind the keyword, at the screen hinge. The MacBook Air fan runs constantly by design. The fan runs at or above a minimum speed while the MacBook Air is running.
On my late MacBook Air 11 inch, the minimum speed is revolutions per minute rpm. If you put one ear to the keyboard, you can hear the fan. Some people, in a very quiet room, with very sensitive hearing, may be able to hear the fan at the minimum speed. When the MacBook Air is busy it generates more heat. The fan then runs faster to keep the Mac cool. At higher speeds, you can easily hear the fan.
Examples of activities that make the MacBook Air busier are: In a hotter room, the fan will need to run faster. The highest fan speed on my late MacBook Air is rpm. You can fix this with a SMC reset. This benchmark was running Half Life 2 Episode 2, which works both the main processor and the graphics processor — both of which generate heat.
Both processors are on the same silicon chip in the new MacBook Air. If your MacBook Air is getting too hot, there are some possible fixes below. Heat and Fan Noise: The fan noise and heat issues are affecting the i5 MacBook Air as well. Software functions that consistently use CPU are being used, e. Apps or other software running in the background is consistently consuming CPU.
Adobe Flash, the technology used to deliver some animated ads in web pages and most web video is consistently using CPU. This is a specific, common case of the cause above. The software keeps trying to run and keeps falling over causing load on the CPU. Software that Consistently Uses Processor Software that is performing an activity that consistently uses can cause the MacBook Air to get very hot and the fans to run loudly. A few examples of heavy software are: Video export, encoding or format conversion transcoding.
Importing photos to iPhoto or performing recognition of faces in your photo library. Playing some HD video. How much processor video playback uses depends on many factors, including video resolution p, i, p , frame rate, detail in video bit rate , how sophisticated the encoding is e.
Web video uses Flash, and Flash video playback is less optimised than Quicktime. I suspect that is because some web videos uses formats that Flash is optimised for probably H. Video editing and effects e. Exporting a music track mixdown , from a multi-track music project. Playing 3D games e. If you are doing sustained processor intensive work expect it to get warm or hot and for the fan to become audible or noisy.
In these cases that MacBook Air is usually performing normally. Some of the heat is dispersed to the case, so the case feels hot. If you use less battery, your MacBook Air gets less hot. And on the way, you might double your battery life. You can see how much power each app is drawing, use the free software coconutBattery.
To help cool down your laptop, quit background apps or pause them using the 3rd party software App Tamer. Other background services often called daemons can also consume power. Flash is mainly used to include animated and video ads in web pages, to deliver web video and provide games in webpages.
Flash is not uncommon for charting. Flash tends to use a lot of CPU. While the latest versions of Flash do some hardware acceleration for video playback, Flash still uses considerably more CPU to play video than native video players like Quicktime X.
Consider if a Flash banner ads is not visible: Use one browser window at a time. Use the free software ClickToPlugin for Safari. It stops Flash automatically running; it requires you the click a Flash part of a webpage to make it run — which sometimes you do e.
Use Safari without Flash. When you really need Flash, use Google Chrome instead of Safari. Chrome includes Flash built in. Some of these techniques can be combined. ClickToPlugin might be a good option here. You can just click on the main video to enable it, and leave the ads disabled, giving you the best chance of the MacBook Air staying cool and quiet. Flash seems to be the most common cause of the MacBook Air overheating and fan running fast.
If it contains software that runs in the background and restarts automatically, the software can start over and over again. The person was very technical and fixed the broken software themselves.
The fans have now stopped and the other symptoms that I mentioned have also gone away. Perhaps this can help with others. You may not have all these symptoms.
Make sure your MacBook Air has external power. Release all the keys at the same time. Press the power key to start the computer. Drop me a comment and let me know what you did, and how it worked for you. It helps people find this page ahead of older, less useful webpages. MacWorld has 41 million links — help us catch up!