Placing air suction next to the air flow ventilation of a PC. Good or bad idea?

[Hypr]

This is something that came up at work, as there are four computers running with their air vents placed four to six inches away from the air suction (so that it would suck up the air which was blown out from the air vent fan of a PC.) While this may seem like a good idea on paper (as the suction would supposedly aid the air flow), I just can't help but wonder if there are any potential dangers about this.

I'm already leaning towards that this is a bad idea, but I just can't come up with the solid reason why. Nor could I find anything that would support this idea either. I just want to know if there is anything that my company should be aware of, or if this is actually safe at all.

Thanks.

EDIT: Please move me to the Computers subsection.

 

[KrisOhn]

If your computers are running very hot, and pumping out very hot air, there could be overheating problems.