Last year was my first year with an insert (Lopi Freedom Bay) heating both floors of our 2250 sqft colonial. Found short burn times and was getting bummed about it, until I got on this site and found so may posters saying 2 years or better for drying time. So I got on board with that, and now have just experienced 8 hours on my first burn of the season last night!! The six splits ( neat term I picked up on last year here) of elm were still in tact this morning when I awoke, house was 73 on the first floor, 67 upstairs. Oh man are we gonna love the insert this year, for our coldest temp months I have 3 year old oak just waiting to go.