Replacing a 10-year-old room air conditioner with a new ENERGY STAR® qualified model can save an average of $14 a year on your electric bill. ENERGY STAR qualified room air conditioners use at least 10% less energy than conventional models. In addition, qualified room air conditioners often include timers for better temperature control, allowing you to use the minimum amount of energy you need to cool your room.
If a room air conditioner does not meet your home cooling needs, consider the tips found here to build on your energy savings.