I just got a '99 wide body Burro
14. It needs an AC. I think roof mounted is best if possible. Pricey, around $600 or so. I understand many FG campers have weak roofs. This one seems to have a mystery structure just inside the door to the left. Some kind of reinforcing ribs with a flat square area on the ceiling. It looks to me like it was engineered in as support for an optional AC. I'll take a pic and post in the morning.
Otherwise, I've heard of cheap window units mounted in holes in the wall fore or aft, up high, or under the bed(with a remote), or in storage closets somehow. Seems like the air flow would suffer cooped up like that.
So, why are cheap window shakers little more than a hundred bucks, while "RV" special models are $600?
I'm in Florida, so need maximum cooling. I heard someone say 8000btus is minumum for hot Florida weather. Most of the roof units I've seen so far are 13,500btus. Is that too much?