Jump down off the hostility wagon guys, I have a properly functioning propane furnace but travel in the far north a lot (arctic and sub arctic) and do not generally camp in campgrounds. Here to fore I have tent camped or used a pop up where such a stove wasnt practical and I am not looking for cheap here as these are far from inexpensive.
Its clear most of you have no idea what I am talking about but these stoves are very common around the world and I even used them in the Army. They are a non-pressurized system that uses a metering valve to regulate the fuel and I have had one in a fishing boat and in a cabin and they work great.
This is a particular stove I have been impressed with in the past but there are several others of various sizes: http://www.refleks-olieovne.dk/default.asp?pagenumber=1567.
I have to say, throwing out a question and getting flak for thinking differently because I have different needs is not a very encouraging sign for this forum.