What would happen if you STACKED two fans together?

fuzzybabybunny

Moderator<br>Digital & Video Cameras
Moderator
Jan 2, 2006
10,455
35
91
nvm. Just tried it and it doesn't work. Fans in parallel = double, but fans in series != double.
 

SparkyJJO

Lifer
May 16, 2002
13,357
7
81
actually no. CFM doesn't increase much if at all, but air pressure does. Noise increases as well due to the extra air turbulence.