← EPA 608 Refrigerant Types – HVAC Certification Flashcards

Free EPA 608 Refrigerant Types – HVAC Certification Flashcards Practice Test (2026)

80 questions · 120 min · 70% to pass

80 Questions · 120 Minutes · 70% to Pass

Question 1 of 5

Sample Questions

Question 1

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

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.

Question 2

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

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 3

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

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

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 5

What does the acronym CFC stand for in refrigerant terminology?

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