Since 1996 or so, my SF260 has been getting it done here, as an add-on to the 1964 boiler we have. Except for some serious creosote issues, it has been almost trouble free. There are three 8 to 10 inch long cracks across the face now, and the auto damper has some missing teeth. I could weld the cracks, but I'd rather just have it gone. 9 cords of wood [good, dry wood] this past winter, full cords, stacked on 4x4x4 pallets. Oak, maple, locust, etc. Another chimney fire back in December, had I not been home, could have been really bad. The 8" flue is so full of that hard glassy creosote, the kind you cant get out. I promised my wife [and myself] no more fire up through the house. On to the future.......3000 sf saltbox, base board hot water. Attached garage where I'd like to instal a gasification type boiler, less wood, a stainless chimney up through the garage, less worry [i hope] about fires. I could use some tips or advise about the gasification units, not something I want to buy without some homework - Any help or thoughts appreciated -