Proper fan placement?

I understand those placements. But I was wondering since I don't have an extra fan or the money to get one at the moment. Where to place my 3 fans? There isn't a spot to put on on top of the case, and I currently have 2 in the back of the case blowing air out. I'm curious as to if the fan on the lower side of my case should be blowing air out, or sucking air in?

Hi,

First fan and most important is the rear fan sucking hot air out of the case and blowing it out the back.

The second most important is to have a front fan pulling in cool air.

If you have a third fan and want to place it, you might want to place that on the side of the case pulling in cool air. If there is no place to do that, then use it on the back to pull hot air out of the case.

Ok, I think I have an idea. When I bought my case, it came with 2 fans attached to the back one on top of the other, and a slot for a fan on the side panel, and in the front. I have one extra fan that I have on the side, and I'll switch it to blowing air into the case. The way it's set up now I realized is that all my fans are blowing air out, and there's no air going on. So I'll fix that. Also, would it help me better if I took one of the fans off the back of the case, and put it in the front? If so, which one (the top fan, or the one beneath it)?

Thanks for the help.

Also I'd like to put out that I do have another fan, but it runs horribly, everytime I turn on the computer, I have to manually crank the fan to start. I'm sure there are hairs or something stuck on the fan that's making it do this, but I can't figure out how to get it out. If I can fix that fan, I could keep both fans in back and have one for the front.

HI,

Quite honestly, if this were my case, I would leave the two back fans and put the spare in front. Then you can add to the side as you get another fan. Also, the fan that you have to manually start, not worth it...thow that thing away.