Refrigerant regulations are changing quickly at the state and federal levels, in order to facilitate a smooth transition away from R-410A to lower-GWP refrigerants. Finding a replacement for R-410A has been challenging, but several alternatives have emerged as top contenders. One of those is the mildly flammable (A2L) refrigerant, R-454B, which is manufactured by Chemours. It has been selected by Carrier to be the primary lower-GWP solution to replace R-410A in all of its ducted residential and light commercial packaged solutions sold in North America.
There are many questions surrounding the safe use of mildly flammable refrigerants, which is why The ACHR NEWS asked Stephen Spletzer, a principal engineer at Chemours, and Jeff Warther, a training and business development manager at Chemours, to discuss some of the technical details of R-454B.