If it is a single hose unit then remember that no matter what, as long as it is running you will be loosing air from the room via the exaust hose (likely stinky air). you can have all your cool tube exaust and ac exaust running into a room/box that houses the carbon filter and the ballasts which will clean the ac air and also keep temps down. Also if you do not have an intake on the tent/room the ac will overheat. If you are running air cooled lights you can reduce the amount of btus by about 30% from what i have read. Also dont spend your $ on loft insulation Just use some Rmax and line it with ifared film if you are worried about the ghetto bird.[/QUOTE
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