With the help of a professional energy auditor and infrared camera technology, BobVila.com evaluates the thermal efficiency of one house by identifying energy leaks that are common to many homes and then exploring both quick and long-term solutions to stop leaks and make any home more energy efficient.
We focused primarily on the top five ways homes lose heat, according to About.com/home repair: infiltration/air leakage 35 percent; windows & doors: 18 to 20 percent; floors and below grade space: 15 to 18 percent; walls: 12 to 14 percent and ceilings: 10 percent.