we really just wanted to upgrade from the hotblast 1557m smoke dragon at the time. Now we've (wife and I) have been considering getting an owb since I started building the shop. So I kinda put indoor forced air furnace shopping on hold.If you're looking for a new old school furnace you should check these out.View attachment 1164507They were rated coal/ wood until 2016. Still built exactly the same and come with a steel plate to cover the shaker grates. I wonder why?