When Should I Replace HVAC Central Air Conditioning Unit?

National Renewable  Energy Lab recently developed this flow chart as a decision tool for  replacing an existing central air conditioning system. If your current system was installed before 2006 or is less that 10 SEER, you will probably benefit from a replacement system. Participating AlabamaWISE contractors take a comprehensive approach to HVAC upgrades by evaluating insulation, air leaks and the duct system and Manual J load calculation to optimize home performance for better comfort, indoor air quality and energy savings.

Follow this decision tree to evaluate the need to replace your obsolete central air or heat pump system.