[retiredguy123]

If you are in the process of replacing your HVAC system this month, you should know that a new Federal law will go into effect in January in the southern states to increase the minimum efficiency requirement from an SEER of 13 to 14. So, if you have a contractor who wants to sell you an SEER 13 unit in December, I suggest that you either get a huge discount on the unit, or require the contractor to install an SEER 14 unit. Contractors who have SEER 13 units in stock will not be able to install them after December 31. Personally, I would buy the SEER 14 unit. This efficiency requirement applies to the condenser unit located on the outside of your house.