Greetings, This winter I have used a different tactic toward wood burning. In the past I have, with few exceptions, cleaned the ash from the firebox religiously each morning before starting the days fire. I would usually put the coals aside as I removed the ash. This year, I may have removed some ash,not all, on four occastions. Not only that but I have set the primary air on Low and kept the air wash open at all times. I find I the house is as warm and much less fuel is consumed. The stove is a Centennial, the primary air is spring loaded and will open or close to satisfiy the need. The primary air seems full open on low and closes as the firebox warms repopening as needed to keep the fire burning. There is no run away as when the primary is full open and greater air demand of a hot chimney, if any, is pulled in through the air wash. It is almost March 1th and we still have a goodly amount of wood. Have any of you been doing this all along? This isn't a science controled experiment. I haven't compared out door temp and measured the stick count of the wood burned but this has been a colder, at times, winter, with less snow.