Finding the right stove with my chimney height/width

[Rockhound]

Well I started to pull the trigger on a stove and then saw something in the installation that put me back at the drawing board. Here is what I have after careful measurements:
Chimney Flue: 8"x12" O.D./6-1/2"x 10-3/8" I.D. clay liner = 67 sq. in. area
Chimney height from top of thimble to chimney outlet = 27'-7"
Floor to bottom of thimble 5'-3"
8" I.D. round clay thimble 24" long thru basement to exterior chimney. Chimney construction stone veneered concrete block.
Stove outlet is in basement currently non combustible floors/walls in the area of the install.
I don't want a big stove, was hoping I could do a 6" outlet.
I really don't want to do a liner if it is even possible to get one in there.
The chimney (built in 2000)has worked fine with older small stoves but the new EPA stoves I guess are different. The flue is in good shape and was only used for about 5 years. The stove I was looking at has a maximum flue length of 25'. It allowed me to do 2.5 times larger chimney area than the stove outlet which seems to be kinda typical I guess. I want to do an install per manufacturers recommendations of course and would like a UL listed stove. I don't need a pretty stove. So what are my options with my mile high chimney if any.

 

[2broke2ride]

Just put in a key damper to limit draft???? That's what I would do, I'd much rather have a chimney too tall than too short. I can almost guarantee you will have a creosote problem with that big, tall clay flue though. Newer stoves just don't leave up enough heat to keep a chimney that size hot enough.

 

[bholler]

And have you had the chimney inspected by a pro with a camera? 5 years with an old stove in an oversized chimney is plenty of time to destroy those clay liners.

 

[Rockhound]

Before I pay for a sweep to run a camera down the chimney I would like to know whether a code compliant EPA/UL stove can even be installed meeting the manufacturers requirements with my conditions. If I can only put a large stove down there then I may not put a stove in at all. Is it possible to install a liner in the chimney and if so what are my stove options then?

 

[bholler]

Is it possible to install a liner in the chimney and if so what are my stove options then?

Yes you can fit a 6" equivalent insulated oval in there as is or with tile breakout you can do 6" 7" or 8" equivalent. So your stove options are pretty open. I personally don't think a 6" stove will work well in that chimney but if it is in good condition and has the required clearances give it a try and see how it works

 

[Rockhound]

I am not real sure what is involved with a break-out. The basement wall the 8" thimble is in is a 12" load bearing block wall, not sure if is filled block. It is all below grade. I did find the chimney clean out below the thimble after moving my junk. It is a small cast iron door just above the basement floor. I guess in my simple mind what I am starting to believe is the chimney as is is not built for an EPA certified stove without costly modifications. May work fine with a non EPA unit as has been proved in the past. Don't get me wrong I like the new stoves. They are very wood friendly. I had an Appalachian Stove Gemini XL in my last house and loved it. Unfortunately my wallet may tell me I just can't afford to do what needs to be done.