[encantotom]

bill, i researched fans a ton. the fans you have the link to are 6-8k dollars each and are huge.

i did not want fan blades over any of the lights or over the top of either coach bay. i have it set up so i can walk easily on top of a coach in either bay without ducking. that is also why i put a commercial jackshaft garage door opener on both doors. you will notice there is no trolley on the ceiling over the middle of both garage doors.

and....the fans i bought are commercial high bay fans. they each put out 46,000 cfm at high speed. by design, ONE of them is big enough for the entire shop. i put 4 of them in and an 8 foot BAfan is 160,000 cfm. so the 4 of them is about the same cfm. i also located them strategically. the one agains the wall is so when my coach is in the bay, and i am working on the drivers side (i will back it in) then i can have a fan breeze over me. then one is over the tool and lift area and the other 2 are down the center line of the shop.

a typical house ceiling fan is in the 5,000 cfm range.

i switched each fan separately and used a variable speed controller on each.

tom