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Changing landscape of refrigerants: what contractors need to know

When it comes to understanding the refrigerant landscape contractors should understand the following: HCFCs are phased out on Jan. 1, 2020. No amount of ozone depletion potential (ODP) is okay for the environment. Europe has not banned R134a for chillers. R1233zd is available today and should be used instead of R123 in low pressure machines. Lower GWP may come with trade-offs.  

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