EPA 608 UNIVERSAL TESTED QUESTIONS
AND COMPLETE SOLUTIONS
◉ What are the three equipment-specific types covered by the
EPA 608 certification?
Answer: Type I (small appliances), Type II (high-pressure
appliances), and Type III (low-pressure appliances).
◉ What significant act was amended in 1990 to regulate ozone-
depleting substances?
Answer: The Clean Air Act (CAA).
◉ What does Section 608 of the Clean Air Act aim to minimize?
Answer: Emissions of refrigerants that harm the stratospheric
ozone layer and contribute to global warming.
◉ What year was the Montreal Protocol signed?
Answer: 1987.
◉ What major milestone occurred in 1996 regarding EPA 608
certification?
Answer: EPA 608 certification became mandatory.
, ◉ What is the significance of the AIM Act of 2020?
Answer: It mandates the phase-down of high-GWP HFCs in new
equipment.
◉ What is Ozone Depletion Potential (ODP)?
Answer: A measure of a substance's ability to deplete the ozone
layer.
◉ What are the ODP values for CFCs and HCFCs?
Answer: CFCs have ODP values of 1.0; HCFCs have lower ODP
values (0.02-0.11).
◉ What is Global Warming Potential (GWP)?
Answer: A measure of a refrigerant's heat-trapping ability relative
to CO₂.
◉ What does the AIM Act direct the EPA to do by 2036?
Answer: Reduce HFC production and consumption by 85%.
◉ What are azeotropic blends in refrigerants?
Answer: Blends that behave as single substances (e.g., R-507A).
◉ What are zeotropic blends in refrigerants?
Answer: Blends that exhibit temperature glide and must be
charged as liquid to maintain composition (e.g., R-407C).
AND COMPLETE SOLUTIONS
◉ What are the three equipment-specific types covered by the
EPA 608 certification?
Answer: Type I (small appliances), Type II (high-pressure
appliances), and Type III (low-pressure appliances).
◉ What significant act was amended in 1990 to regulate ozone-
depleting substances?
Answer: The Clean Air Act (CAA).
◉ What does Section 608 of the Clean Air Act aim to minimize?
Answer: Emissions of refrigerants that harm the stratospheric
ozone layer and contribute to global warming.
◉ What year was the Montreal Protocol signed?
Answer: 1987.
◉ What major milestone occurred in 1996 regarding EPA 608
certification?
Answer: EPA 608 certification became mandatory.
, ◉ What is the significance of the AIM Act of 2020?
Answer: It mandates the phase-down of high-GWP HFCs in new
equipment.
◉ What is Ozone Depletion Potential (ODP)?
Answer: A measure of a substance's ability to deplete the ozone
layer.
◉ What are the ODP values for CFCs and HCFCs?
Answer: CFCs have ODP values of 1.0; HCFCs have lower ODP
values (0.02-0.11).
◉ What is Global Warming Potential (GWP)?
Answer: A measure of a refrigerant's heat-trapping ability relative
to CO₂.
◉ What does the AIM Act direct the EPA to do by 2036?
Answer: Reduce HFC production and consumption by 85%.
◉ What are azeotropic blends in refrigerants?
Answer: Blends that behave as single substances (e.g., R-507A).
◉ What are zeotropic blends in refrigerants?
Answer: Blends that exhibit temperature glide and must be
charged as liquid to maintain composition (e.g., R-407C).
