The sound of a loud Mac fan may be annoying but the fear factor is worse. What’s causing the fan to blast away? Heat. From what? Downloads? Network activity? Background processing? Flash? Or, worse– faulty sensor (and the Mac has plenty of those). Here’s how to control the Mac’s fan and check on the internal sensors.
Make Hot Mac Cool
If your Mac’s fan comes on too often then it is worth your while to track down the culprit. For me and my MacBook Pro, the fan comes on almost every time I visit a website with Flash advertising.
Sometimes the fan stays on and running at full blast long after I’ve closed the website and quit Safari. Enter TG Pro, a Mac utility with a single purpose in life– Mac fans.
This useful utility lets you control the Mac’s fan speed, monitor the Mac’s temperature from multiple locations, and find sensors which may be faulty. The control panel tells the tale in detail and simple graphic form.
One click allows you to see all the built-in temperature sensors and temperature for each. That includes sensors on the CPUs, battery, hard disk drive (or, SSD), the Mac’s logicboard, and much more.
Got a special graphics GPU? TG Pro can display details about that, too. TG Pro is a Notification Center compliant utility, too. Have your Mac notify you via email when any sensor or average CPU temperature reaches specific thresholds (easily set with a slider bar).
TG Pro brings controls for each fan inside the Mac– you define the specific speed and predefined temperature in Preferences. It also logs temperatures recorded over time. Built-in diagnostics allow you to discover a faulty fan or sensor in the Mac, too.
This is a must-have utility for any Mac user where the fan seems to come on too often, regularly, or not at all; even when the backside temperature is hot to the touch.