I use this program frequently on my MBA computer and it really comes in handy, not only for temperature control but for many other reasons as well. The LED light gives you the ability to see if the fans are on or not. For example, it might be nice to know that the computer is cooling down quickly at the beginning of the day but you don't need the computer to be over-speedy heating up later in the day. The timer control allows you to set a time to remember each fan speed and then turn them on at the right time. It also has a feature called 'low battery alarm' which will automatically turn the fans off when the battery is low and turn on again when the battery is full.Īnother cool feature of SMCfanControl is that it comes with both a light control and a timer control. To adjust fan speeds, you have to have administrator privileges. In this regard, how do I turn off the fan on my MacBook Open Activity Monitor (Applications Utilities Activity Monitor) Look for the CPU tab. You may turn on and off during the process. Then press the power button and hold all four keys for another 7 seconds. It does this by adjusting the minimum speed of the fan and by setting the maximum power used. Press and hold Control-Option-Shift for 7 seconds. The only thing you'll need to be careful about is keeping the computer on an incline so that there is proper air flow.Ī SMCfanControl allows you to control the fans in your Mac manually just to make it operate much cooler. You can even set up a timer to turn the fans off and on at set intervals. My advice for people who run their programs all the time in a crowded room is to get a SMCfanControl utility that will not only turn their fans off when not needed, but will also automatically shut them off when the room temperature reaches a certain point. I've always had a problem with computers overheating, especially when running multiple programs at once, and I'm sure you've experienced the same problem I have.

Smc fan control shut off fan