Yep, that's one of the units I've been looking at. I haven't checked pricing yet, a comparable roof unit would be $600 (coleman) to $700 (duotherm). I'm hoping the Tundra isn't too much higher. The Colemans use less power (10.5 amps at 13500 btu). The DuoTherm is basically the same. At 1400 watts per unit I don't see any problem running two 14000 units off of a generator. And that should be plenty. I'm looking at a 22' box with plenty of insulation.
Another one that I've been meaning to check into is made by CruiseAir. It's a two piece unit made for motorcoaches. They claim to have units up to 36000 btu.
FWIW, I'm trying to keep a clean roof. No expensive parts for tree branch target practice. And no reason for anyone to walk around up there.
-lee
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