Re: Air Conditioning
Sinbad, FWIW, our "classic" '93 Sporty has the original, roof-top AC (don't believe they still use the same manufacturer). Of course, it requires high-wattage a.c. and thus only works on shore power or using the on-board Onan generator. As to mileage, I'm sure that having something sticking up on top increase drag, but then so does having something sticking down under the van if it goes below what's otherwise there. We haven't detected any bothersome wind noise. The AC is of course audible when running, but the noise is steady and not annoying (at least to us - wish I could say the same about the Onan). The AC alone is not sufficiently loud to bother any other folks who may be camped nearby. The unit is very good at cooling and pretty good at heating. Hope this helps; I'm looking forward to the comments of other Forum members about their experiences.
1993 E350 SMB, 15M, 84k miles - a cheap date
2006 Toyota Prius because we like clean air
2002 Honda Odyssey - can haul lots of stuff
1972 Mercedes 350SL with 4.5l V-8, just because
Wag more, Bark less, Play well with others.