well I was at work for the last 12 hrs and when i came home I looked at our insert and the whole glass is black. Looks like the wife tried to have her first fire and im guessing it was smoldering for hrs. Looks like im gonna have to explain that she needs to get the fire burning hotter. There was 4 splits beside the stove when i left now theres only 1 and looks like almost all the wood in the stove was burnt up so maybee it wasnt all that bad.