An energy survey or audit of your home’s energy usage and costs identifies specific energy efficiency measures appropriate to reduce your home energy bills.

The Department of Energy and the Lawrence Berkeley National Lab have developed a Home Energy Saver audit tool that can give you a more detailed estimate of your total energy use, as well as savings estimates for various energy efficiency options. You can also find listings of energy-efficient appliances, and other resources. This is an Internet-based tool, so you don’t need to download any software.