The University of Minnesota will no longer use the ozone-depleting refrigerant R-22 to keep its ice surface cold at 3M Arena at Mariucci. (Courtesy University of Minnesota)
With production of refrigerant ending, all options could be costly
A popular refrigerant will no longer be produced after the end of the year, leaving many maintenance managers at arenas with ice rinks with a choice to make: stick with the current refrigerant to keep the ice cold by paying premium prices for a product that’...

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