I currently have a Regency wood stove that I would like to remove and install in its place my Harman Advance that I brought from my former home. The brick chimney has a 6 inch liner in it about 19ft. I phoned a couple of stove shops that had different advise. One said to use 4 ich pellet vent with a adapter to the liner and the other suggested a 4 inch liner inside of the 6 inch for better draft. One also said I could use my existing 3 inch and use an adapter to the liner. Do they mean an adapter to the thimble? Which is the proper way of doing this. My current 3 inch is Simpson duravent.
Thanks
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