I haven't been burning heavily for more than the last two winters, but noticed I can have a roaring fire going, burning through tons of wood (all free off my property) but still have minimal output. My home is a 2 story, fairly closed floor plan colonial. Burning for 12-14 hours straight some days, I am only able to raise the temperature in the catty-corner room where the thermostat is by a degree or 2 at most. Without closing the doors in the room where the fireplace is, I feel minimal difference from the other rooms. My question is, other than installing an insert (which may happen), what are some other options to increase the output of this fireplace and slow down how much wood I am burning? I have seen firebacks but those cost almost as much as a used stove in some cases.