For years, HVACR technicians have been used to primarily working with nonflammable (A1) refrigerants, such as R-410A, R-22, and R-404A. Now that HCFCs are being phased out and there is growing concern ...

NAVAC Inc. won Gold in the Electronic Tools category for its NRDC4M refrigerant recovery machine, which was created as an alternative to the conventional single- or dual-cylinder design. “For most ...