jetsam
Minister of Fire
There is a clay liner. Also I’m in the process of having the chimney lined with insulated pipe, thinking that will help too. I was going to replace my stove this fall because it’s oversized but after talking to the manufacturer I decided to try a few things they suggested first. But that’s for another thread.
I think after making the changes I did then I’ll probably be making less creosote. Also the chimney just would not come clean when we bought the house so I have been running some of the creosote chemicals to try to get some of the really hard stuff to loosen up and I think that’s contributing to it. I use a spot eater and brush both fwiw.
See all the people up the thread that are getting a cup or two of ash and creosote when they sweep?
An insulated liner is going to help you a lot. Creosote needs cool temperatures to condense, and a big old clay chimney is perfect.
A big short hot fire is going to make less creosote than a long cool fire with the same wood because the flue stays much hotter for the first one.
With an insulated liner you won't have to worry about it and you can burn however you like.