epa 608 universal Exam 2026 Questions
and Answers
Refrigeration technicians who violate the Clean Air Act can: - - Correct answer-
Lose their EPA certification, be fined, be required to appear in Federal court.
After 1995, any supplies of CFC refrigerants to service existing units in the USA
can only come from: - - Correct answer-recovery and recycling.
Refrigerant that is recovered can be returned to: - - Correct answer-the same
system or other systems owned by the same person without restriction.
Refrigerant can not be called "reclaimed" unless it: - . - 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.
What characteristic(s) of CFCs make them more likely to reach the stratosphere
than most other compounds containing chlorine? - - Correct answer-Refrigerants
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,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.
A system is considered dehydrated when: - - Correct answer-the vacuum indicator
shows you have reached and held the required finished vacuum.
Disposable refrigerant containers are 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: - - Correct answer-0 psig.
Manifold gauge sets are often color coded, when this is done, the high pressure
gauge is color coded: - Red. - Correct answer-
In general, blended refrigerants should be charged: - - Correct answer-as a liquid.
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, 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? -
Stratospheric Ozone - Correct answer-
In a refrigerant system, the device that changes a low pressure vapor to a high
pressure vapor is the: - compressor. - Correct answer-
Data shows that chlorine in the stratosphere comes mainly from CFCs rather than
from natural sources such as volcanoes because: - 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; - Correct answer-
Which atom of the CFC molecule causes ozone depletion? - chlorine - Correct
answer-
The ozone layer protects the earth from: - ultraviolet radiation from the sun. -
Correct answer-
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and Answers
Refrigeration technicians who violate the Clean Air Act can: - - Correct answer-
Lose their EPA certification, be fined, be required to appear in Federal court.
After 1995, any supplies of CFC refrigerants to service existing units in the USA
can only come from: - - Correct answer-recovery and recycling.
Refrigerant that is recovered can be returned to: - - Correct answer-the same
system or other systems owned by the same person without restriction.
Refrigerant can not be called "reclaimed" unless it: - . - 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.
What characteristic(s) of CFCs make them more likely to reach the stratosphere
than most other compounds containing chlorine? - - Correct answer-Refrigerants
©C0PYRIGHT 2025, ALL RIGHTS RESERVED 1
,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.
A system is considered dehydrated when: - - Correct answer-the vacuum indicator
shows you have reached and held the required finished vacuum.
Disposable refrigerant containers are 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: - - Correct answer-0 psig.
Manifold gauge sets are often color coded, when this is done, the high pressure
gauge is color coded: - Red. - Correct answer-
In general, blended refrigerants should be charged: - - Correct answer-as a liquid.
©C0PYRIGHT 2025, ALL RIGHTS RESERVED 2
, 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? -
Stratospheric Ozone - Correct answer-
In a refrigerant system, the device that changes a low pressure vapor to a high
pressure vapor is the: - compressor. - Correct answer-
Data shows that chlorine in the stratosphere comes mainly from CFCs rather than
from natural sources such as volcanoes because: - 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; - Correct answer-
Which atom of the CFC molecule causes ozone depletion? - chlorine - Correct
answer-
The ozone layer protects the earth from: - ultraviolet radiation from the sun. -
Correct answer-
©C0PYRIGHT 2025, ALL RIGHTS RESERVED 3
