Check for holes or cracks around your walls, ceilings, windows, doors, light and plumbing fixtures, switches and electrical outlets that can leak air into or out of your home. Check for open fireplace dampers. Once you assign priorities to your needs, you can form a whole-house energy efficiency plan. Your plan will provide you with a strategy for making smart purchases and home improvements that maximize energy efficiency and save the most money. Another option is to get the advice of a professional.
Many utilities conduct energy audits for free or for a nominal charge.
For a fee, a professional contractor will analyze how your home's energy systems work together as a system and compare the analysis against your utility bills. He or she will use a variety of equipment such as blower doors, infrared cameras and surface thermometers to find inefficiencies that cannot be detected by a visual inspection. Finally, they will give you a list of recommendations for cost-effective energy improvements and enhanced comfort and safety. A good contractor will also calculate the return on your investment in actual dollars. This thermal photograph shows heat leaking from a house during those expensive winter heating months.