I have a Wallas Diesel stove on the C Dory. It is two burner. The larger of the burners gets up to about 10,000 BTU and the smaller probably 6,000 at full bore. The ceramic top is very easy to clean--much like the electric ceramics. The stove also doubles as a diesel cabin heater in a small boat. There is a forced external draft, there is a circulating fan which pushes the hot air off the burners when the top in closed, making the unit a heater. I don't think it would be practical in heating a large boat. It does fine in the PNW for the C Dory. The fuel use is very effecient. There is no internal flame or diesel smell and the combustion is very effecient. The stove does use a small amount of power for the pressure pump, the blowers and ignition. There are a lot of these used in small boats and they are excellent for what they are designed for. Bob Austin