If your home's central air conditioning system is more than 10 years old, it may be time to consider upgrading to a new, more energy efficient system. The higher the system's Seasonal Energy Efficiency Ratio (SEER rating), the more efficiently it operates - which translates into lower electric use and lower electric bills.

In January 2006, the minimum efficiency level for all new central air conditioners manufactured in the U.S. will be raised from 10 SEER to 13 SEER. Emerson, a leading maker of energy efficient technologies for the HVAC industry, has launched this website to help you learn more about the 13 SEER regulation and what to look for when buying a new air conditioner.