As mentioned in Part 1, the HVACR industry is in the process of researching new low-GWP refrigerants and refrigerant blends that can be incorporated into refrigeration and air conditioning systems.

We’ve been pretty spoiled in residential and light commercial in the USA because we haven’t needed to deal with glide much. R-22 has no glide and R-410a is a near-azeotropic blend (which means it has ...