New Refrigerant 2024 Trane Air Conditioner. Manufacturers have been trying to figure out a refrigerant to replace r22 with less global warming potential. If you’re deciding between lennox, trane and carrier, here are the key differences as well as pros and cons.

Do i have to replace my air conditioner that uses an old refrigerant? Despite existing for six years at this point, r454b wasn’t accepted as the replacement refrigerant by most manufacturers until 2022.