To determine which is the correct orientation for the fan, observe the location of the manufacturer’s sticker on said fan – that’s the direction into which the air is blowing. You can also look at the curve of the fan’s blades to determine how it’s carving the air, or spin by hand and feel for airflow.Click to see full answer. Subsequently, one may also ask, which side of fan is exhaust?Exhaust fans go on the rear or the top. Do not mount exhaust fans on the bottom of the case; since hot air rises, a bottom-firing exhaust fan will be working against physics by expelling slightly cooler air instead of warmer air. The Intake-exhaust direction should go front-to-back and bottom-to-top.One may also ask, which way do Corsair fans blow? Get a small, light piece of paper and hold it just above the fan (when it’s running) and see whether it is blown up or sucked down. Or blow some smoke over it, your choice. Yes, that’s correct. Most retail fans have the “pretty side” as intake and the specification sticker/label as the exhaust side. Similarly, which way do Thermaltake fans blow? Generally, you want the case fans in front of the case drawing in air while the fans at the rear blow air out. If your case has vents at the top, they should be placed as exhaust fans because hot air will rise. Side-mounted fans should be used for intake, though they often don’t have air filters.Is one case fan enough?I recommend at least 2 fans. One for intake and one for exhaust for best results. You can get by with just one fan though if you are careful. Fans are like $5-10 though so it really shouldn’t be an issue.
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