Refrigerators & Freezers Why Buy an Energy-Efficient Refrigerator or Freezer? Older refrigerators and freezers can use more electricity than any other appliance in your home. ENERGY STAR® certified refrigerators and freezers use much less energy than standard models, without sacrificing the performance and features you want. ENERGY STAR certified refrigerators are about 9 percent more energy efficient than standard models. In fact, a typical ENERGY STAR certified refrigerator uses less energy than a 60-watt light bulb. By replacing your old refrigerator with a newer model, you can save $200 over the 12-year lifetime of the product. ENERGY STAR certified freezers are at least 10 percent more energy efficient than standard models. Replacing your old freezer with a newer model could save you $195 over the next five years.