First off, I know how you feel--we are in the same boat with our house, as far as the ins. co. wanting us to make repairs....they are concerned that our roof is too old, so they won't give us "real" insurance until we replace the roof. And since in the last two years we have had to replace the septic, the well, the furnace, the water softener, and the stove, well, we just haven't put the roof, which doesn't leak at all, on the top of our list....I do understand that "real" insurance is quite a bit cheaper, though, so someday I'd like to get it
Anyhow....we have a high-efficiency furnace, and instead of smoke going out the chimney, it actually vents through a pvc pipe that sticks through the wall.
Our chimney is falling down too. It looks like a giant Jenga game, missing one here, missing one there, etc....but nobody, not even the ins cos. have griped about the chimney condition because we don't use the chimney. So my question is, could you put in a high-efficiency furnace, making sure ahead of time that it vents through a pipe, not the chimney, and then gently dismantle the chimney or report to the ins co that you are no longer using the chimney?
Just a thought that came to mind.....sure would be cheaper than building a new house.....