Hey folks. So here is what I have going. I just got this big old Buffalo wood stove from my brother in law. It's about 24" in every direction. Two sets of doors one above the other. Eight inch outlet. It's sweet. Last winter was our first in this new house. It's a ranch on a full basement. Last year the heat bill was absurd. We have a heat pump with electric auxiliary. Once it gets cold. It runs all the time. In the living room there is an old fireplace with a really nice brick hearth and mantle. Below it in the basement there is a clean out. I want to tap into that chimney from below. I understand that the upper one will no longer be usable. Has anyone ever done that? Any advice would be helpful. I can upload some pics. I am gonna try. New to this site so wish me luck.