i have been planning on purchasing an outdoor wood boiler phase 2, not sure which brand yet. My father in law was talking to a guy he works with and he had built one. He said he would build me one. I have drove by his house and from the road it looks good. Everytime I have drove by though it was always smoking. How efficient could that be? Says he fills it once a day but it looks big from the road. Would I just be better off buying one? I could use some opinions from you guys. Thanks a lot!