tomthumbs wrote: Although several years have passed and Split_Pea has probably moved on, to anyone experiencing similar problems I'd like to say that I also had this happen a few times. The house was placed in a 'negative air pressure' state by me opening a window as I first lit the stove. The warmer house air 'rose' out the window and the colder outside air came down the flue to compensate dragging the smoke with it. To test this is easy enough. Simply open the stove door when it's cold and not being used and hold a tissue over the openning. If the tissue tends to be drawn into the stove then the draft is good the pressure is balanced and the warmer house air is 'rising' up the flue. If the stove (flue) is tending to blow the tissue away from the stove then the house is in a 'negative pressure' state meaning that air is escaping from other areas of the house and pulling the colder air down the flue to compensate. A good example of this, for clarity, is a friend who lit a fire then turned on his house exhaust fan to 'change the air' in the house and with all the windows closed the only way in for the air, which was balancing the 'negative pressure' state, was down the flue. Smoke filled the house in mere seconds. I think that the stoves are essentially the same and work the same...but houses are different and the positive/negative pressure has to be taken into account. I now keep windows and doors closed when firing up the Jotul and I start with paper and small kindling to 'heat' the flue before fully loading it. When fuuly loaded and closed down tight it lasts up to eight hours. I also added a Magic Heat diffuser to the 6" flue and have increased its efficiency a thousand fold. It blows the heat evenly through the house with no hotspots. Hope this helps.