HFC refrigerants are set to be phased out by which year?

HFC refrigerants, or hydrofluorocarbons, are subject to regulatory phase-down due to their significant global warming potential. The phase-out is part of international agreements aimed at reducing the impact of greenhouse gases on climate change, most notably the Kigali Amendment to the Montreal Protocol.

Although HFCs are being targeted for a phase-down, the correct year associated with significant regulatory measures is 2025. This year marks a critical deadline for the most substantial reductions in the use of HFCs as outlined in the United States' initiatives.

It is important to recognize that prior years mentioned in the other options, such as 2020 and 2022, may refer to earlier implementation phases or regulations affecting specific HFCs or classes of refrigerants, but they do not represent the overall timeline for the full phase-out of HFCs. The emphasis on 2025 aligns with broader global efforts and national regulations, highlighting the ongoing transition to more environmentally friendly alternatives.