Bye, Bye R-507A, R-404A and Others; EPA to Ban More 'Unacceptable' Refrigerants

The list of refrigerants that refrigeration contractors have known as popular, efficient, and "forgiving," but that are now branded as "unacceptable" by the U.S. Environmental Protection Agency grew by leaps and bounds on July 10, when EPA proposed to prohibit the use of certain chemicals that it says significantly contribute to climate change where what it describes as "safer, more climate-friendly alternatives" exist.