An energy audit will show you which areas of your home use the most energy and help you decide the most effective way to reduce energy costs. You can conduct a simple audit yourself, contact your local utility, or call an independent energy auditor for a more comprehensive examination. Check your home’s insulation levels, and look for holes or cracks around doors, light and plumbing fixtures, and other places where air may leak into or out of your home. Make sure your appliances and heating and cooling systems are properly maintained, and study your family’s lighting needs and use patterns, paying special attention to high-use areas. Check out Your Home's Energy Use for more tips. This tip is brought to you by the U.S. Department of Energy and ISU Extension.