Question 1

What does the acronym CFC stand for in refrigerant terminology?

Accepted Answer

CFC stands for Chlorofluorocarbon. These refrigerants contain chlorine, fluorine, and carbon, and have the highest ozone depletion potential (ODP) of all refrigerant families.

Question 2

What does the acronym HCFC stand for, and how does it differ from a CFC?

Accepted Answer

HCFC stands for Hydrochlorofluorocarbon. Unlike CFCs, HCFCs contain hydrogen atoms, which makes them less stable in the atmosphere and gives them a lower ozone depletion potential than CFCs.

Question 3

What does HFC stand for, and why do HFCs have an ODP of zero?

Accepted Answer

HFC stands for Hydrofluorocarbon. HFCs have zero ozone depletion potential because they contain no chlorine or bromine — the halogens responsible for destroying stratospheric ozone.

Question 4

What does HFO stand for, and what environmental advantage do HFOs have over HFCs?

Accepted Answer

HFO stands for Hydrofluoroolefin. HFOs have zero ODP and an extremely low Global Warming Potential (GWP), making them more environmentally friendly than HFCs, which can have high GWPs.

Question 5

Which refrigerant family has the highest ozone depletion potential (ODP)?

Accepted Answer

CFCs (Chlorofluorocarbons) have the highest ozone depletion potential. R-11 and R-12 are common examples with an ODP of 1.0, which serves as the baseline reference.

EPA 608 Refrigerant Types – HVAC Certification Flashcards

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