i guess the guys at the hospital who bend 3/4" copper around a condenser, then srill small holes in it to release water onto it may be on to something? you know, you could use them in alaska too-----all you would need is some heat trace for the blanky the unit would be more efficient but what about overall costs?
That just made me think of something. I am thinking about a rack in a supermarket. Why not make a evaporator for the condenser and enclose it all in like a shell and tube. No motors. No roof pentrations. No water. I bet they could do that. Maybe they got it already.