You can see the current temperature and fan speed from the menu bar item once the app is open, even if it’s not the most forefront app.

Select “Auto” to return to the default settings.Launch Macs Fan Control, then click on the “Custom” button to manually adjust the speed of the Mac fans based on either a constant RPM value or a sensor-based temperature value.Get Macs Fan Control free from the developer here.The authors are not liable for data loss, damages, profit loss or any other types of losses connected with the use or misuse of the program.” Take that warning seriously! Warning: The Mac Fans Control app assumes you are an advanced computer user and comes with the following warning from the developer: “ This program is for advanced users who know how to use it without doing harm to their macs. If you are not a very advanced Mac user, do not use this app and do not attempt to adjust fan speeds. Use this app entirely at your own risk, as it may damage your Mac.

This app and others like it are for advanced users who have the sufficient knowledge and experience to understand what they’re doing and why they’re doing it, and to avoid harming their computers. Overusing a fan could result in hardware failure as well. Failure to adequately cool a Mac can result in performance problems, crashes, and even permanent damage to hardware. Manually controlling Mac fan speed is not without risk, so if you don’t know what you’re doing and how to not damage your computer, you should not use these type of apps. But remember, the Mac will adjust fans on its own depending on temperatures as needed, so intervening on your own is generally not wise nor recommended.

The aptly named Macs Fan Control application allows for this.

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