The 13/14AJM condensing unit was designed with performance in mind. These units offer comfort, energy conservation and dependability for single, multi-family and light commercial applications. The Rheem Value Series™ 13/14AJM condensing units are the result of an ongoing development program for improved efficiencies. With system efficiency as high as 17 SEER, these units continue a tradition of delivering high efficiency. These units also contain the most advanced alternate refrigerant which contains no chlorofluorocarbons (CFCs), or hydro-chlorofluorocarbons (HCFCs), or other compounds that may leak from air conditioning systems and potentially harm the protective ozone layer of the Earth's atmosphere.