Ok I got home and started the kindling at 3:30pm its been cold all day in the mid to low 30's, the house was at 65 degrees when I started, it is now 72 degrees at 5:45pm. The downstairs is about 1300 sq ft and the upstairs is 400 with two bedrooms and a hall. How does this compare to you? The room with the insert is getting really warm right now the stove top is at 600 and the beer is cold. 32 outside temp right now.