Epa Policy Changes Refrigerant Regulation 2025. Starting in 2025, the epa will enforce a 750 gwp limit for refrigerants used in new air conditioning units. Environmental protection agency (epa) has set transition dates for new equipment required to use new refrigerants, commonly referred to as a2ls.

On december 26, 2023, the u.s. Come 2025, the environmental protection agency (epa) will set a 750 global warming potential (gwp) limit for air conditioning.