In the southeastern United States, weather conditions include moderately cold temperatures, extreme heat, rapid swings in temperature, and extreme humidity.

EarthCraft is a building certification program designed for this area, and certifies homes only in Virginia, North Carolina, South Carolina, Georgia, Alabama, and Tennessee. The program dates back to 1999, when the Southface Energy Institute and the Greater Atlanta Home Builders Association jointly created EarthCraft to improve building practices and…