"The GSX140361 Goodman 2.0 Ton Air Conditioner Condenser uses the chlorine-free refrigerant R-410A to help prevent damage to the Ozone Layer. This unit is equipped with sound-dampening features to provide operating sound levels that are among the lowest in the heating and cooling industry. Using high-quality components, the Goodman GSX140361 air conditioner condenser is rated at 14 SEER and will help reduce energy consumption throughout the life of the system.