R-454B is a next-generation refrigerant with a lower global warming potential than previous standards. Many of our newest products, such as the MRCOOL 2.5-3 Ton Pre-Charged Coil, are designed for this eco-friendly fluid. It is part of the industry shift toward more sustainable HVAC solutions. You will find this refrigerant mentioned across many items in the Accessories and parts sections. Using R-454B helps future-proof your home against changing environmental regulations. It provides excellent thermodynamic properties for efficient heating and cooling.