I think from reading the FAQ section most of my questions are answered but I still wanted to discuss my situation. We are a week or two from closing on a foreclosure, Just awaiting results of the appraisal. I have been researching wood stoves a lot recently. This house has an interior chimney structure. There is a 8x8in clay lined flue for the upstairs fireplace. There is a 12x16 clay flue for the downstairs fireplace. During inspections I had a mason inspect the chimney gave it the aok, but said there was 1) cracked mortar in the cap around the flues that someone had patched 2) No crown to allow for water to drip away from the chimney 3) Severe creosote buildup (reasons why will be discussed). 4) improperly installed flashing around the chimney (amateur) although the mason didn't think it was leaking he recommended it be re-done as did the house inspector. 4) he said the clay flue liners were very new and in good condition but the creosote was pretty terrible (especially in the larger flue) So from the posted pictures you can see the fireplace for the 8x8 flue. The problem is the 12x16 flue. The previous owners have a "window" into the brick structure for the downstairs chimney, with a stove pipe insert. This stove pipe elbows into the chimney and stops at the Damper Bars. Even the damper bars are line with creosote. I don't have exact measurements either but it seems like the stove insert pipe is only 3 feet or so off concrete slab (seems like it might be difficult to exhaust a stove with the "window" so low. Question 1: Obviously the huge 12x16 flue with a 6inch pipe at the damper was likely the cause for the severe creosote buildup as it created a poor condition for drafting and perfect condition for creosote. Correct? Question 2: The other side of "window" is where the original fireplace was with glass window. It isn't blocked off or anything. It would appear this is a fireplace, someone punched out a whole in the back end with the intention of converting it into a wood stove chimney. As we haven't purchased this and the Mason nor the Inspector were quite sure was code regulations would be about this setup (stove on one side, open chimney on the other). The inspector was prone to think the original chimney opening would need to be "blocked off" in some respect to prevent its use as a fireplace anymore. What are you opinions? Question 3: It seems the best course of action due to the huge flue size of 12x16 that the damper bars need to be removed and either 6-8inch stove pipe run of the chimney? (There is no curve to the damper....it just goes straight up. What are you recommendations? Should it be 6 inch, 8 inch, flexible, rigid? Should I insulate even though the chimney is interior and not exterior? Question 4: It is OK to run chimney liner up the clay flue? especially with the good condition of the clay liner? After getting the creosote cleaned. Question 5: As long as it is ok to run a metal liner down the clay flue after thorough cleaning, give how large the flue is I kind of feel this could be a DIY job, however I want everything to be kosher as far as being code and my house insurance not having any problems with anything should something ever happen. It just seems like (and from watching videos) given how large the 12x16 flue is that it would be no problems getting even insulated 6-8inch pipe down there. My research is showing that at ! 25 feet from basement to top of chimney we could be looking at 2000-3000$ for a chimney sweep to install the liner, when it seems I can order a kit and parts for well under 1000$. Question 6: The chimney is fairly central to the house (1050sq footage) and basically the entire house is electric (no gas, oil, propane) what recommendations on wood stoves do you all have? Any other concerns you all have regarding this situation?