Macbook Air fan flow direction

Discussion in 'MacBook Air' started by Wackery, Oct 29, 2016.

  1. Wackery macrumors 6502a

    Feb 1, 2015
    I have a question about the internals of the macbook air, does the fan (in the back where the screen and keyboard connect. suck in air, or blow air out? i had to work in a dusty environment and it would make me feel much better if i learned all this dust wasn't sucked in. one reason i almost considered the retina macbook...
  2. ftaok macrumors 603


    Jan 23, 2002
    East Coast
    The fan blows out, but air still has to come in from an intake. Normally, it goes in through the keyboard. Don't use devices that have fans in a dusty environment unless the intake has filters.
  3. shwiftyrift macrumors newbie

    Aug 22, 2017
    I have wondered this too and I have found the answer. I took a match and lit it and then blew it out so there was smoke. I then put it on the top, where the keyboard is and the bottom. I had the fans running at max bc it was rendering a video. What I found was that the fans pull the air from the bottom of the laptop when the lid is open. and then blows it out the back or the top.
  4. Wackery thread starter macrumors 6502a

    Feb 1, 2015
    very neat observation!
  5. Johnny365 macrumors 6502


    Nov 30, 2015
    Sorry, that made no sense. So where is the air intake? Keyboard IN, back plastic hinge/notch OUT ?
  6. Kanunu macrumors 6502

    Apr 18, 2009
    My understanding was that both the intake and exhaust were by the hinge. One side in; the other side out. If the intake was the keyboard, then a keyboard protector would heat the whole machine up in a hurry.

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