Since at least 2009, the international refrigeration community has been discussing a global phasedown of hydrofluorocarbons (HFCs). Today, it’s gaining greater attention, because, even though the transition from chlorofluorocarbons (CFCs) to hydrochlorofluorocarbons (HCFCs) and then to HFCs has resulted in gases with lower climate change impacts, the growing use of air conditioning and refrigeration around the world has resulted in more refrigerant use and the need to use even lower-GWP (global warming potential) refrigerants.