Case fan air flow direction

HemiDart

Junior Member
Oct 21, 2000
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I have a real newbie question. Just built my first computer. Incredibly, it all works!

I have an Antec KS288 case with a case fan mounted in the front. Just wondering what direction it should blow.

Thanks for the advise.
 

tonyou

Senior member
Nov 22, 1999
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You should have the front case fan "sucking" air into the case together with another case fan at the back "blowing" out hot air collected at the top of the case.

"sucking" and "blowing" are interchangeable...

Tony
 

HemiDart

Junior Member
Oct 21, 2000
5
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Thanks for the info Tony.

I assume when you say case fan at the top, you mean the power supply fan?

Thanks
 

andygold

Member
Oct 12, 2000
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There's no exact answer to your question, but the general consensus is that you want cool air to enter at the bottom, and hot air(which rises) to exhaust at the top. I'm assuming you have an ATX power supply which should have been set up to exhaust hot air out through the back. If the case permits, mount an additional fan up top exhausting air outward.

Whenever you have an odd number of total fans(including power supply) have the extra fan exhaust air outward(prefferably at the top). Your case will almost always have weep holes where air will leak in...if it is pulled inside. This seems to be better than having too many fans blowing in, which will over pressurize the inside of the case.
 

squirrel dog

Diamond Member
Oct 10, 1999
5,564
48
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no, put another fan on top of your power supply and have it blow air out of the case,should be some vents up there.