chiller applications on HFCs with GWP less than 2500, including R410A or R134a. FACT: There is no phase out date for HFCs. On September 26, 2016, the EPA announced that, under the EPA SNAP (Significant New Alternatives Policy) program, specific refrigerants including R134a and R410A can no longer be New in new chillers, effective January 1, 2024.