you need to override fan settings for miners outside.
I used my garage last year.
 (Michigan) I saw alot of failures due to hotspots, keep the fans blowing all the time, it can be set to lower sped, but circulation is important or you're going to end up with potentially damaged equipment.
or just a fwe large fans blowing across the whole farm is another option if you have the room.
but at least tarp to walls to keep moisture out