About two weeks ago I called the folks at Greenwood. Seemed friendly enough and educated me on the ceramic/gasifier type. My house that I would like to retrofit next year is an 1840 farmhouse about 2200 sq ft. At present the house has steam and radiators which I am not using since it would take atleast 2000 gallons of oil per year. I am using a wood stove in the kitchen and a toyostove(kerosene) in the living room as a backup. Half of the house is closed off which is not good. I have an unlimited supply of wood on the hill. It sounds like the Garn would be a great choice if price wasn't a concern. I am assuming it would be better to take out the radiators and replace with hot water baseboard. Also I'm a little confused on the hot water storage?? The fire can be out for how long and still have the system heat. If I wanted to leave for a few days can I have an oil backup?? Sorry for the ignorance.