In many systems, it is possible to remove all of the existing HCFC refrigerants and replace with a 'retrofit' HFC product. In many of these cases, the retrofit product is a 'drop in' replacement that will only need a small number of system changes to be made, such as adjustment to expansion valves and in some cases, oil changes.
The diagram below is a summary guide to HFC alternatives to existing HCFC systems.
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