Fan placement in coop?

[HyperCello]

I have a fan hanging from the top of my coop, but wondering if it is a good idea to put one on the floor as well? Any cons to doing that? Thanks!

 

[Folly's place]

Chickens will knock over anything, and fans on the floor will also stir up a huge amount of dusty crud. Keep any fans up above, and attach them very securely, and make sure your electrical connections are secure and safe.
Household fans aren't meant to do well in dusty chicken coop environments either, so watch carefully.
Mary