Question

type i - question # 8
the sale of cfc, hcfc, hfc, and hfo refrigerants to service or install refrigeration and air - conditioning equipment is;
a banned from use unless you have a recovery machine.
b limited by law to hvac contractors and / or mechanical engineers.
c allowed only if there is proof of need.
d restricted to technicians who are epa certified in refrigerant recovery.

Explanation:

In the United States, the sale of CFC, HCFC, HFC, and HFO refrigerants for servicing or installing refrigeration and air - conditioning equipment is restricted by the Environmental Protection Agency (EPA). The EPA requires technicians to be certified in refrigerant recovery to handle and sell these refrigerants. This is to ensure proper handling and prevent release of these substances into the atmosphere, which can have environmental impacts.

Answer:

D. restricted to technicians who are EPA certified in refrigerant recovery.