With the ban on R-4040A, R-507A and other refrigerants taking effect in 2021, and further phasing out of over 20 regulated refrigerants, hydrofluorocarbon (HFC) use is set to be reduced by over 85% over coming years, with a switch to naturally occurring gasses that are non-ozone depleting being encouraged.
Reclaimed and re-processed refrigerant can be used until 2030 but is likely to become expensive and in short supply as when R-22 was phased out.