I think we can all agree that the Anthraking is a well built (and efficient) coal-burning appliance. I think it is a great option for those that want to distribute their heat via blowers/fans and ductwork.
That said, I think coalberner has a good idea...a thread in the "General discussion" section to discuss boilers vs. furnaces, and maybe stoves vs. central heat would be an interesting topic.
Edit: No need to wait, I just started a new thread: Stoves or Central Heat? Boilers Vs. Furnaces
A Coal stoker furnace or stove controls most operations including automatically feeding the coal. They are quite similar to any conventional oil and gas units and easily operated for extended periods of time. They commonly use rice coal but may use larger sizes like buckwheat. They can be used as primary heat, supplementary heat or have a dual set up with your existing oil/gas furnace.