I am considering all options to help ventilate and cool down my new coop, as we have triple digit summers. I've been monitoring the temperature inside with the 3x3 window open and it's in the low 90's. Same as outside. Has anyone ever installed a bathroom style (pardon this) fart fan? Would that exhaust enough hot air out of the coop? Clog up too easily with all the dust? I have a 7' deep x 14' wide x 10' ceiling height to cool. I was considering rigid foam insulation to make a drop ceiling at 8 feet, then making a frame in it to hold some sort of fan that I can exhaust out the back wall using ducting. I can leave the window slid open in front, and the people door open as well since there's wire mesh. I can't leave it open at night as the mesh is the 2x4 and really only to keep chickens out of the feed/storage spot but I know the foxes and raccoons can get their little mitts in there. Am also thinking of just a wind powered turbine mounted on the roof. The coop has south protection of sorts as the roof slopes down and overhangs the coop by six feet so the sun doesn't hit the south wall directly. Am holding off on my new flock chick order until I can give them a reasonably great place to live! Am planning on 8 - 10 at the most in there.