New Refrigerant In 2025. These new coolants are developed to be friendlier. Beginning in 2025, new ac systems will utilize an alternative class of refrigerants that more closely match with climate goals.

1, 2025, must use the new refrigerant. In december 2022, the epa unveiled a refrigerant ban that will go into effect between 2025 and 2026 (depending on the industry).