I took advantage of a special program in Mass and added 7 more inches of insulation in the attic, plus had sealing performed. I did not realize we were losing so much heat above our ceiling fans and bath room fans. We only had 6 inches in our attic and now we have 13. The results are dramatic. The heat retention is unbelievable. There is just now a 1 or 2 degree difference in temp between the stove room and the rest of the house. We are using 1/2 less wood now and the house at 3 degrees outside is an easy 70 inside where we struggled to get it to 60 when close to zero. The house was always warm if high 20's outside, but if it hit the low teens or single digits, we went through a lot of wood. We can let the fire go out for 4 hours or more and see hardly any heat loss. I think once the temps get to the 30's and 40's we may only need a small fire in the am and a small fire in the evening to keep the house comfortable.