I started my morning fire on a huge bed of coals. I packed the stove with oak and locust at 6am. At 9:15pm I still had coals for a restart. The stove was just below 200* but this is what the firebox looked like. Man over 15 hours and still a decent amount of coals. This thing is a beast. Threw some kindling and a few small splits and in 20 minutes its up to 420* and cruising. I know its no blaze king, but I'm thankful for this burn tube beast.