Originally Posted by ron1guz
It is going to be "Outside". I like to avoid a heating/cooling unit in it if possible. I will not be opened that often - only to move things around, so I am not worried about that part.
it's not a matter of opening it too often, it is just that insulation will only delay the equalization of temperature, not prevent it. You will still have temp swing inside. If you don't have some sort of climate control for the building, it will get hot on hot days and cold on cold days. look into a cheap swamp cooler or evaporation a/c (do a google search, you can find them for $90 - $400). they are portable and should be able to keep a relatively constant temp for you as long as the space is not HUGE. They are not the most efficient a/c units, but if you are not opening the door often, they should be more than sufficient. get one with a digital temp setting for ease of control.