installing case fans, how to determine exhaust or intake?

roderz88 · 12 Jan 2011 at 11:17

Hi all

I built a new PC yesterday, but im not sure if ive positioned the fans correctly. What I mean is, which way do you have to position the fans for them to work as exhaust or intake ?

I thought that for exhaust, the logo must face the inside of the case, is this correct ?

If it helps, I have a coolermaster CM690 case (ignore specs below as they are from my old system)

Tomcat825 · 12 Jan 2011 at 11:19

Just turn them on and see which way the air blows is what I do... I think it's usually the guard side is the way the air blows but then I thought that until I changed a fan last night and it was blowing the other way lol.

coldfused · 12 Jan 2011 at 11:21

In nearly all fans, the air goes in the direction towards the spokes.
Take a look at this system build guide:
http://forums.overclockers.co.uk/showthread.php?t=18046396

Go to the second post and look at figure F.

Philtor · 12 Jan 2011 at 11:22

If you look carefully on the fan casing you should see a directional arrow indicating which way the air is drawn in and out through the fan.

Marine-RX179 · 12 Jan 2011 at 11:24

If you are still unsure, have a look at the following video...you will clearly see which way the air is going:
http://www.youtube.com/watch?v=D24fz585UIM&feature=related

ThomasTheTankEngine · 12 Jan 2011 at 11:52

coldfused said:
In nearly all fans, the air goes in the direction towards the spokes.

What he said.

In the pretty side, out the ugly side.

shadow_boxer · 12 Jan 2011 at 15:30

philtorrens said:
If you look carefully on the fan casing you should see a directional arrow indicating which way the air is drawn in and out through the fan.

this

.Ox. · 12 Jan 2011 at 15:34

jimbob27 said:
What he said.

In the pretty side, out the ugly side.

Same applies when we eat our food.

But yea, they are right!