Carrier Air Conditioner Reviews - Consumer Ratings. Carrier air conditioners have efficiency ratings range from 13 SEER to 21 SEER. 21 SEER is very high energy efficiency for an air-source air conditioner as opposed to geothermal systems. They use R-410A in all models of the air conditioner line. Air Conditioners and Heat Pumps that use R-22 refrigerant are no longer manufactured. Because of the regulations phasing out R-22 refrigerant, many have already switched to R-410A. Carrier is one of the top brands and some of their systems are energy star qualified.
Carrier does manufacture air conditioner systems for residential, light commercial, and heavy commercial applications. The name that Carrier calls the super-efficient model is Infinity. The next step down being the Performance series. The Performance series is the mid-range line for efficiency. Lastly, the Comfort series air conditioners are in the Carrier economy line. They also offer a builders grade line up. Some features of selected AC’s are: