They save money each year. The Energy Star website estimates that homes with all Energy Star appliances save about $400 annually over homes without Energy Star appliances.
They are generally better quality. Energy-efficient appliances often include higher quality components than those found in standard appliances, which can result in fewer mechanical problems, longer equipment life, and in some cases extended warranties.
They may qualify for product rebates. When you buy an Energy Star refrigerator, for example, you may be able to get a rebate on your purchase price to offset the price. Visit the Energy Star website at http://www.energystar.gov/index.cfm?fuseaction=rebate.rebate_locator and enter the type of appliance you want into a search tool – you’ll see all the rebates.
You may quality for a tax credit. To learn about federal tax credits for energy efficient systems, visit http://www.energystar.gov/index.cfm?c=tax_credits.tx_index