I want a wood furnace some kind of bad. I'm leaning towards the Englander wood furnace sold at Home Depot. The layout of my basement leaves me with very limited chimney options. Thought about a wood/oil combo unit as well. A lot of coin they cost and I'm not sure I want the fancy electronics they have. Like the YuKon models. Or if I could share the chase and flue with my existing oil furnace. Looks like I'm gonna have to punch through the block wall and go straight up with pre-fab. It will look getto until I can get it closed in. I just can't get a straight answer on codes regarding sharing of flue between the two systems.