I have 8 cords CSS of cherry maple white birch yellow birch black birch poplar and bass wood the house is 1500 sq feet r-13 insulation stove is a hotblast with twin blowers removed and a normal furnace fan installed burned 7 cords last year and ran short about a month and a half before winter was over last winter the down stairs had 0 insulation it is insulated now house is in northern pa