Mike; my major complaint with my Regency air-tight insert is the stupidity and bull headedness of the installers. I told them I wanted a make-up air port to the exterior of the house but they basically told me I didn't need one/I didn't know what I was talking about. Now, when it's running there's a bloody gale coming down from the top floor to the lowest level where the fireplace-insert is. %$%#@&*!!!
I'm using air that I just paid for heating up as combustion air.
And folks up here wonder why the good citizens prefer to travel down to Vancouver to shop, or bring contractors up from, to do their trades work.
Thought about floor vents? I know that's old school (centuries old), but effective.
Mine is single story. Sharon and I both have knee troubles... in the same-side knee. If a problem here, I thought about adding wall vents from room to room. If I have a draft shortage, I thought about going from the below floor crawlspace... But this stove really isn't setup for outside venting.
The house here is really, really, really well insulated. In the summer, one small a/c window unit (when I do need to turn it on) will cool the whole house. That, and it's only 1100 sq./ft.
Hey, if this stove "isn't" good enough to heat this house, then a different stove with a different strategy... My old mentor had a wood furnace for radiant heat. Wrong type of construction here to do that. For something like this, I have a picture in my head of internal tubes, a back-burner, switchable drafts and a central hvac type of ducting delivery from floor vents.
I have another bigger, also "free" one waiting in the wings. One of my shoeing customer's replaced theirs for something more modern... but. it heated their house which is 2500 sq/ft on 2 stories and was built around 1900. (Thinking the walls are probably only 4 by construction on that.) But it could be something I wouldn't have any reservations about modifying. Of course I might have to build ramps and use my pallet jack to get that one into the house...