I dislike the look of the rooftop units and I've heard they aren't that great at coolingplus are very noisy. If you have the room for a basement air then that's what I would go with. I know one will fit nicely into the basement bay of our Eagle 05 with room to spare but don't know about skoolies. Since I am think strongly about converting a skoolie, it is something that has me curious. I think the AC units that http://www.ronthebusnut.com
sells would fit under a skoolie. You apparently have to build the bays in anyway (at least there were never any on the school buses I rode to school and see on the roads around here). I don't understand why I see professional Prevost conversions with 5 & 6+ roof airs stuck on top when 1 basement unit puts out more BTU's than 2 roof tops and does it better, quieter and more efficently (once saw a Prevost with an all black paint job and 7 roof top airs
add to that the 3 maxx-air vents, KVH Sat dome, normal plumbing vents, TV antenna, CB antenna & cellular antenna and the entire roof was covered.... looked really ugly...imagine the wind drag on that) . Here's the big one for me.... 1 basement unit is less than 2 roof tops, according to my sources (sometimes Ron get in roof tops but I still think the basement units are better). Maybe the pro-converters get the roof tops dirt cheap? Then there are all the holes that you are cutting into a perfectly good roof. I don't want to maximize my leak potential in the first place. I plan on using "cheater vents" for my plumbing vents so I have fewer holes (need 2 power roof vents in WC & shower and most likely a vent in the living/galley area).