 Did you know that more than half our household energy costs go to heating and cooling? Energy efficiency isn't just good for the environment. It means lower utility bills, too. One way to reduce your energy waste is a home energy assessment. Your utility company can help, or you can learn how to do it yourself at energysavers.gov. That's energysavers.gov. You'll learn to look for air leaks around windows and doors, check ducts for holes, and improve your insulation.