We are currently researching pellet stoves to heat our 2700 sq ft ranch. The stove would be in the basement. My question(s) is this.... We now have forced hot air. If we make this a closed system and convert the hot air vent in the room that would have the stove to a cold air return (in order to pull the heat out of the stove room), could we circulate the heat from the stove effectively by having the furnace in 'fan' mode? The forced air is not a closed system right now. Air is drawn into the furnace via two floor vents and an open cellar door. This is going to have to be the year we close the system as I am told that would make it much more efficient. We are hoping to use the furnace rarely, if at all, this winter, but rather go with the pellet stove. I hope this makes some sense and appreciate your input and advice.