Question

Which refrigerants must be recovered before opening a system or disposing of a system?

a) CFCs
b) HFCs
c) HCFCs
d) All of the above

Answer 1

The refrigerants that must be recovered before opening or disposing of a system include CFCs, HFCs, and HCFCs.

Step-by-step explanation:

The refrigerants that must be recovered before opening a system or disposing of a system are all of the following options: CFCs, HFCs, HCFCs. CFCs, or chlorofluorocarbons, have been widely used as refrigerants but contribute to ozone depletion. HCFCs, or hydrochlorofluorocarbons, are partially halogenated hydrocarbons that are being phased out. HFCs, or hydrofluorocarbons, are the most promising replacements for CFCs and HCFCs.