Re: Why roof-top AC?
One word, simplicity...
Cut a 14" hole in the roof and drop it in... four corner bolts and you're done, plug it in and start cooling the entire bus. Those things are usually 13,500 BTU and the fan is designed to throw the air quite some distance. They can also be ducted instead of just a central blow system. Mine wasn't expensive either, I managed to find a "Donor" unit from an old travel trailer that blows really cold. I also used a small window A/C in the back. but the roof unit cooled the whole bus.
Also, when you roll down the hiway, you can use the roof unit while in motion powering it from an onboard Generator...comes in handy. These things are made exactly for that purpose, why reinvent the wheel?
You just might be a Redneck if...
...your motor home used to be a school bus!
...Your living room has a steering wheel!
...Your home has brake lights
1994 Jeep Grand Cherokee
1989 Thomas Diesel Pusher (Cat 3208/Freightliner)