Some contractors are taking matters into their own hands and creating specialized in-house training programs focused specifically on the skills required for technicians to become refrigeration experts.
The rink at Mars Lakeview Arena in Duluth, Minnesota, maintained a full-size ice sheet with 1,750 pounds of R-22. The converted DX chiller system runs on a non-ozone depleting, low-GWP refrigerant , R-449A.