We don’t encourage average users to control the fan speed by any 3rd party utility, and it is OK to just let your Mac set the fan speed as it wants. Many users encounter various issues after installing smcFanControl. Yet, you should be very careful using smcFanControl, as it will cause some problems on your Mac. , once installed, this utility will display the temperature and fan speed in the menu bar and you can easily set different speeds for each fan when the power source changes. SmcFanControl is a freeware that allows users to set the minimum speed of the Intel Mac built-in fans, thus to cool down their computers and monitor temperature.
What is smcFanControl & is it safe to use?
How to perfectly uninstall smcFanControl on Mac? Read through the removal guide. Howto Guide: Uninstall smcFanControl for Mac