vapoppa, I was looking at the smaller Hydro-Hot, looks like a nice unit, still waiting to find out the price. Espar also makes similir units, I was thinking of the Hydronic 10 (
http://www.espar.com/htm/Specs/water/D9Wspec.htm)
Gary Atsma, I wanted a different layout than most conversions. The bedroom is small, almost like you see in a boat, called a cave. The bathroom is a medium in size. The kitchen is small, but will have every thing that you need. I left out a dinette to gain some space. The living room is big and their are no overhead cabinets anywhere.