Another way to save energy is to buy products that are energy-efficient—in other words, products that do the same job using less energy. To help consumers compare the energy efficiency of major home appliances, the federal government requires the posting of a yellow and black Energy Guide on a select group of appliances including refrigerators, freezers, clothes washers, dryers, dishwashers, air conditioners, furnaces and water heaters. An Energy Guides gives consumers the estimated annual cost of operating an appliance, or a standardized energy efficiency ratio for similar appliances. Use this sample of an Energy Guide for a refrigerator-freezer to answer the following questions in the interactive activity.