Insert Backing Up
I have an Applachian insert that I have had for 3 seasons. This year I have had problems with it being smokey. I have checked the flu to ensure it is open and the chimney is not obstructed, cleaned it out, tried with air vents open & closed, open & closed the refractor plate and continue to have a smokey house. I have not had this problem any of the previous seasons. Any thoughts on what to try.