We designed a little 75 square feet house. We put it in the best energy efficiency programs and we made a few versions of it. The first was made out of brick and it was covered with polystyrene.
The second version was the “typical” lightweight wooden home. In this program we changed the walls and windows, the U,R values and the infiltration levels so we can estimate our houses efficiency compared to the classical ones. Then we played around with the data. The pictures you see are an excel table/chart, the result being generated from millions of calculations.