A professional energy evaluation service is the best way to assess your home's energy improvement potential. An energy advisor certified by Natural Resources Canada (NRCan) evaluates your home from the attic down to the foundation, including a measurement of your insulation levels and a blower door test to determine air tightness. You will receive a personalized report, including a checklist of recommended retrofits to improve overall energy efficiency, as well as an EnerGuide rating so you can compare the energy efficiency of your home with other homes. Your local utility may also offer this service or other assistance.