I wish I had a video walk through of my house layout as I am heating a 1920 sq.' two story town house entirely from my Pellet stove located in a sun room that was added on to the structure and only connected by the exterior doorway that used to go out onto the old porch. Shouldn't be possible. The sun room where the stove is, is a 20x16 with a high lean too type ceiling that tapers from 8' to 14' and has 10 floor to ceiling windows and (3) 24" X 48" sky lights that just allow heat to blow through the walls !! and still I can heat the whole house at 10 degrees last night. I am amazed. I really feel like this thing is over achieving and it has blown away my original expectations of just turning the base board heaters off in the sun room and being able to see a little fire and feel some direct heat. Only been heating with this stove since Sat. night at 8:00 30 degrees or so, and just got real cold Monday night 10 degrees, but I have only used 4 bags of pellets in the first 60 hours of run time. Too good to be true.