Would any of those outdoor wood furnaces take a whole pallet without cutting it up? With all the pallets that people drop at the dump here, I figure I could heat my house for a year for free. They're almost all hardwood, nice and dry. It would be a bummer to have to dismantle the pallets to use the wood, though less time would be spent doing that than chopping wood. I figure if the furnace can take the whole thing, burn it, and I clean the ashes and nails out of the ash pan regularly, I can save a lot of time and money. Another question-can you interface one of those furnaces with an existing oil-burning HWBB system? So basically, I have the option of using one or the other as my mood/resources/energy level dictates? How does that work?