I have started burning the new insert earlier than expected, but love it so far. I have 4 cords of well seasoned and dry mixed hardwoods and hope this would last the season. I have always heard in the past that ash wood may be burned as soon as it is cut down without creosote conerns, but have never had to try this in the fireplace. Can anyone tell me if unseasoned ash can be burned in a new (epa) insert effectively? Hopefully I do not have to find out.