On average, the typical U.S. family will spend around $2,200 annually on their energy bills. Their use of larger appliances, such as dishwashers and ovens, accounts for a large chunk of this number. By replacing old appliances with newer, energy-efficient options, you could save hundreds -- maybe even thousands -- of dollars per year. As a homeowner, however, you’re probably concerned about the cost of a new appliance. Your concerns are valid: a new appliance is a big investment right ..