I recently purchased a new "Flame" wood burning insert (made by SBI ). The manufacturer says 10 hr. burn on low with seasoned hardwood. My retailer and installer said "realistically, 7-8 hr." I have found that after loading full at 11:30 P.M. , there will still be a pretty good coal bed present at 7 A.M. with the thermostatically controlled blower still 'on'. Is anyone familiar with this model (1.9-I ) or a comparable stove. It has a 2.3 cu. ft. firebox. Any input would be GREAT!! Thanx!