Appliances account for about 13% of your household's energy costs, with refrigeration, cooking, and laundry at the top of the list.

When you're shopping for appliances, think of two price tags. The first one covers the purchase price-think of it as a down payment. The second price tag is the cost of operating the appliance during its lifetime. You'll be paying on that second price tag every month with your utility bill for the next 10 to 20 years, depending on the appliance. Refrigerators last an average of 12 years; clothes washers about 11 years; dishwashers about 10 years; and room air conditioners last about 9 years.

When you shop for a new appliance, look for the ENERGY STAR® label. ENERGY STAR products usually exceed minimum federal standards by a substantial amount.

To help you figure out whether an appliance is energy efficient, the federal government requires most appliances to display the bright yellow and black EnergyGuide label. Although these labels will not show you which appliance is the most efficient on the market, they will show you the annual energy consumption and operating cost for each appliance so you can compare them yourself.