New Refrigerant 2025 Trane Hvac. 1, 2025, must use the new refrigerant. Trane, in alignment with global environmental goals and new federal regulations, is committed to transitioning to low global warming potential (gwp) refrigerants in hvac.

All new systems will use. Starting january 1, 2025, new refrigerants will replace older ones in all new air conditioners and heat pumps due to epa mandates.