For those of you who have or have operated one of these things before, I have a few questions. For those of you wondering what the heck I'm talking about, see here for an example: http://www.mainewoodheat.com/rothschild1.html 1)How do you control the heat it radiates? If you build a fire in one for 3 hours to radiate heat for 24, how do you ensure it's not going to sweat you out of the place? Are there damper systems to control that? 2)What is the best backup heat source for someone in a cold climate who is concerned about leaving the home for a week or two and needs to prevent frozen pipes, etc. 3)Would it be advisable to have an additional "quick" heat source like another smaller woodstove or monitor heater for those days that you're particularly chilled, sick, etc.? In other words, how much flexibility do you have with a furnace like this? 4)How well would/does a water boiler work? Could a person rig a radiant floor system into the heater (with a propane backup, perhaps)? Thanks in advance.