MacBook Air
MacBook Air

Tame Your MacBook Air’s Noisy Fan

Does your Mac Air sound like a hotel hair dryer?  Is the fan running even when your computer is doing nothing?  You can easily fix this with an SMC reset:

http://support.apple.com/kb/HT3964

Here is the section you need:

  1. Shut down the computer.
  2. Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
  3. On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
  4. Release all the keys and the power button at the same time.
  5. Press the power button to turn on the computer.  
    Note    : The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
Apple
Apple