epa 608 universal Exam 2026 Questions
and Answers Graded A+
What happens when refrigeration technicians violate the Clean Air Act? - Correct
answer-Lose their EPA certification, be fined, be required to appear in Federal
court.
After 1995, where did all supplies of CFC refrigerants to service existing units in
the USA come from? - Correct answer-recovery and recycling.
What can refrigerant that is recovered be returned to? - Correct answer-the same
system or other systems owned by the same person without restriction.
What does Refrigerant need to be called "reclaimed"? - Correct answer-has been
chemically analyzed and the refrigerant meets the ARI-700 standard.
The EPA can require a technician to demonstrate their ability to perform proper
procedures for recovering and/or recycling refrigerant. Failure to demonstrate
competency can result in... - Correct answer-revocation of the technicians
certification.
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,What characteristic(s) of CFCs make them more likely to reach the stratosphere
than most other compounds containing chlorine? - Correct answer-Refrigerants
that contain chlorine but not hydrogen are so stable that they do not break down in
the lower atmosphere after being released. The chlorine or bromine reacts with the
ozone, causing it to change back to oxygen, thus destroying the ozone layer.
When is a system considered dehydrated? - Correct answer-the vacuum indicator
shows you have reached and held the required finished vacuum.
What are disposable refrigerant containers used for? - Correct answer-virgin
refrigerant
Which refrigerant is an HCFC? - Correct answer-R-123, R-124, R-22
What statement is true about an azeotropic refrigerant mixture? - Correct answer-It
is a mixture that acts like a single-component refrigerant over its entire range.
Chlorofluorocarbos (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of
the following in common? - Correct answer-It is a mixture that acts like a single-
component refrigerant over its entire range.
To scrap a disposable cylinder, the internal cylinder pressure should be reduced to
at least what psig? - Correct answer-0 psig.
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, Manifold gauge sets are often color-coded. What color is the high pressure gauge?
- Correct answer-Red
In general, blended refrigerants should be charged: - Correct answer-as a liquid.
How do blended refrigerants leak from a system? - Correct answer-in uneven
amounts due to different vapor pressures.
Which of the following gases help form the earth's protective shield? - - Correct
answer-Stratospheric Ozone
What device changes a low pressure vapor to a high-pressure vapor in a
refrigerant? - Correct answer-Compressor
Data shows that chlorine in the stratosphere comes mainly from CFCs rather than
from natural sources such as volcanoes because... - Correct answer-The rise in the
amount of chlorine in the stratosphere matches the rise in the amount of fluorine,
which has different natural sources than chlorine; The rise in the amount of
chlorine in the stratosphere matches the rise in CFC emissions; Air samples taken
from the stratosphere over erupting volcanoes show that volcanoes contribute a
small quantity of chlorine to the stratosphere when compared to CFCs;
Which atom of the CFC molecule causes ozone depletion? - Correct answer-
chlorine
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
and Answers Graded A+
What happens when refrigeration technicians violate the Clean Air Act? - Correct
answer-Lose their EPA certification, be fined, be required to appear in Federal
court.
After 1995, where did all supplies of CFC refrigerants to service existing units in
the USA come from? - Correct answer-recovery and recycling.
What can refrigerant that is recovered be returned to? - Correct answer-the same
system or other systems owned by the same person without restriction.
What does Refrigerant need to be called "reclaimed"? - Correct answer-has been
chemically analyzed and the refrigerant meets the ARI-700 standard.
The EPA can require a technician to demonstrate their ability to perform proper
procedures for recovering and/or recycling refrigerant. Failure to demonstrate
competency can result in... - Correct answer-revocation of the technicians
certification.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,What characteristic(s) of CFCs make them more likely to reach the stratosphere
than most other compounds containing chlorine? - Correct answer-Refrigerants
that contain chlorine but not hydrogen are so stable that they do not break down in
the lower atmosphere after being released. The chlorine or bromine reacts with the
ozone, causing it to change back to oxygen, thus destroying the ozone layer.
When is a system considered dehydrated? - Correct answer-the vacuum indicator
shows you have reached and held the required finished vacuum.
What are disposable refrigerant containers used for? - Correct answer-virgin
refrigerant
Which refrigerant is an HCFC? - Correct answer-R-123, R-124, R-22
What statement is true about an azeotropic refrigerant mixture? - Correct answer-It
is a mixture that acts like a single-component refrigerant over its entire range.
Chlorofluorocarbos (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of
the following in common? - Correct answer-It is a mixture that acts like a single-
component refrigerant over its entire range.
To scrap a disposable cylinder, the internal cylinder pressure should be reduced to
at least what psig? - Correct answer-0 psig.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, Manifold gauge sets are often color-coded. What color is the high pressure gauge?
- Correct answer-Red
In general, blended refrigerants should be charged: - Correct answer-as a liquid.
How do blended refrigerants leak from a system? - Correct answer-in uneven
amounts due to different vapor pressures.
Which of the following gases help form the earth's protective shield? - - Correct
answer-Stratospheric Ozone
What device changes a low pressure vapor to a high-pressure vapor in a
refrigerant? - Correct answer-Compressor
Data shows that chlorine in the stratosphere comes mainly from CFCs rather than
from natural sources such as volcanoes because... - Correct answer-The rise in the
amount of chlorine in the stratosphere matches the rise in the amount of fluorine,
which has different natural sources than chlorine; The rise in the amount of
chlorine in the stratosphere matches the rise in CFC emissions; Air samples taken
from the stratosphere over erupting volcanoes show that volcanoes contribute a
small quantity of chlorine to the stratosphere when compared to CFCs;
Which atom of the CFC molecule causes ozone depletion? - Correct answer-
chlorine
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
