NutinElse, Sorry for assuming you were the DH. Most of the forum are guys and I missed the cues......I would urge you to reconsider going with a propane heating system. There are millions of homes in North America heated with furnace oil (same as diesel fuel except for a few additives) and there are thousands of service people. It is less complicated than propane and delivers an even, non-drafty heat that most people like a lot. As well, the motorhome systems usually include oil-fired domestic hot water which deliver unlimited hot water for showers and other uses.