this thing puts out an incredible amount of warm air heat. Last winter we hadn't set up the ductwork to the rest of the house yet so we just let all of the warm air going to the basement without the plenum installed. We have a two story wood frame house. there was more than enough heat coming naturally rising from the basement through the vents for the unattached duct work to keep the whole bottom floor warm, and still will a lot of heat going to fill the stair well going upstairs.
One thing I would have done different would have been to have had dryer wood. Ideally, you need to have wood properly stacked with air spaces between the stacked piles and covered at the top to keep the rain off TWO summers before you need it. You want the wood at less than 20% moisture. 15% if you can possible get it that low. Sure it will burn with more, but remember, that extra moisture in the wood wastes heat. First, you need MORE fuel just to be able boil off that moisture. Second, the loss of the heat going to boil off the moisture reduces the temperature of the flame, leading to incomplete burning of gasses (an extra waste of heat), with the unburned residue going up your chimney, coating the chimney walls as they condense into liquid (tar) form as they lose heat. maybe watch this video a few times to learn how to stack wood. leave an air spece between the rows. https://www.youtube.com/watch?v=pQfBffmDpRs
