I bought a NOS 250'000 BTU Heil fuel oil furnace that I'm installing for the winter. My plan is to convert it to waste oil next summer. I ordered a 10" double wall Stainless chimney for it today(the furnace flue is 9"). I was told it'll take about 3 weeks to get it. I'm also currently gathering parts to build my version of a Roger Sanders heater to supplement the heating when I'm in the barn for this winter. So far with the barn insulated and only occasionally heating it with a 80'000 BTU propane heater it's only gotten down to 49*. I'll try to get some pics and post them sometime over the next few weeks. Christmas is quickly approaching and I'm not sure how much I'll be out there.