New Refrigerant Replacing R-410a 2024. However, the flammability has been reclassified as. Come 2025, the environmental protection agency (epa) will set a 750 global warming potential (gwp) limit for air conditioning.

The move came courtesy of the epa, which will ban refrigerants with a high global warming. Big changes are on the horizon for the hvac industry, and they could impact homeowners—particularly those with systems over 15 years old.