608 EPA Universal Technician
Certification Exam 2026 Questions and
Answers Graded A+
What is the state of the refrigerant entering the compressor of a system? - Correct
answer-Low pressure vapor
What refrigerant does NOT contain chlorine? - Correct answer-R-134a
Which refrigerant(s) must be recovered before opening or disposing of appliances?
- Correct answer-HFCs, CFCs, HCFCs
State and local governments may... - Correct answer-Establish law that contain
stricter requirements than the Clean Air Act/EPA regulations
Which of the following is a requirement for all CFC, HCFC, and HFC refrigerant
recovery devices? - Correct answer-They must meet EPA standards
Which of the following gases is used as the baseline measurement for global
warming potential? - Correct answer-Carbon Dioxide
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,What is the Montreal Protocol? - Correct answer-An international treaty that
addresses ozone-depleting substances and their alternatives.
What are the characteristics of hydroflouroolefins (HFOs)? - Correct answer-Non-
ozone depleting, and have low global warming potentials.
What is one of the most serious results of damage to the stratospheric ozone layer?
- Correct answer-Increases rates of skin cancer in humans.
What does ozone depletion potential (ODP) measure? - Correct answer-The ability
of a substance to destroy ozone in the stratosphere.
Which type of refrigerant has the highest ozone depletion potential (ODP)? -
Correct answer-CFCs
As of 2017, how much can a technician be fined for violating the Clean Air Act,
including knowingly releasing non-exempt refrigerant from appliances? - Correct
answer-$44,539 per day per violation.
Which of the following is an HFC refrigerant? - Correct answer-R-134a
Which of the following gases help form the earth's protective shield? - Correct
answer-Stratospheric Ozone
HFC refrigerants contain which of the following? - Correct answer-Hydrogen,
flourine and carbon
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, How many ozone molecules can each chlorine atom in the stratosphere destroy? -
Correct answer-100,000 molecules
What happens if EPA regulations change after a technician becomes certified? -
Correct answer-It is the technician's responsibility to comply with any future
changes in the law.
Ozone depletion in the stratosphere is what type of problem? - Correct answer-
Global
Which type of refrigerant is the most harmful to stratospheric ozone? - Correct
answer-CFCs
Which type of refrigerant typically has the lowest global warming potential? -
Correct answer-HFOs
Why are some hydroflouroolefin (HFO) refrigerants classified as "A2L"? - Correct
answer-They are less flammable than hydrocarbon refrigerants, but most are still
mildly flammable.
Why do EPA regulations require appliances to have a service aperture or process
stub? - Correct answer-To make it easier to recover refrigerant.
Which element of a CFC or HCFC molecule causes ozone depletion? - Correct
answer-Chlorine
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
Certification Exam 2026 Questions and
Answers Graded A+
What is the state of the refrigerant entering the compressor of a system? - Correct
answer-Low pressure vapor
What refrigerant does NOT contain chlorine? - Correct answer-R-134a
Which refrigerant(s) must be recovered before opening or disposing of appliances?
- Correct answer-HFCs, CFCs, HCFCs
State and local governments may... - Correct answer-Establish law that contain
stricter requirements than the Clean Air Act/EPA regulations
Which of the following is a requirement for all CFC, HCFC, and HFC refrigerant
recovery devices? - Correct answer-They must meet EPA standards
Which of the following gases is used as the baseline measurement for global
warming potential? - Correct answer-Carbon Dioxide
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,What is the Montreal Protocol? - Correct answer-An international treaty that
addresses ozone-depleting substances and their alternatives.
What are the characteristics of hydroflouroolefins (HFOs)? - Correct answer-Non-
ozone depleting, and have low global warming potentials.
What is one of the most serious results of damage to the stratospheric ozone layer?
- Correct answer-Increases rates of skin cancer in humans.
What does ozone depletion potential (ODP) measure? - Correct answer-The ability
of a substance to destroy ozone in the stratosphere.
Which type of refrigerant has the highest ozone depletion potential (ODP)? -
Correct answer-CFCs
As of 2017, how much can a technician be fined for violating the Clean Air Act,
including knowingly releasing non-exempt refrigerant from appliances? - Correct
answer-$44,539 per day per violation.
Which of the following is an HFC refrigerant? - Correct answer-R-134a
Which of the following gases help form the earth's protective shield? - Correct
answer-Stratospheric Ozone
HFC refrigerants contain which of the following? - Correct answer-Hydrogen,
flourine and carbon
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, How many ozone molecules can each chlorine atom in the stratosphere destroy? -
Correct answer-100,000 molecules
What happens if EPA regulations change after a technician becomes certified? -
Correct answer-It is the technician's responsibility to comply with any future
changes in the law.
Ozone depletion in the stratosphere is what type of problem? - Correct answer-
Global
Which type of refrigerant is the most harmful to stratospheric ozone? - Correct
answer-CFCs
Which type of refrigerant typically has the lowest global warming potential? -
Correct answer-HFOs
Why are some hydroflouroolefin (HFO) refrigerants classified as "A2L"? - Correct
answer-They are less flammable than hydrocarbon refrigerants, but most are still
mildly flammable.
Why do EPA regulations require appliances to have a service aperture or process
stub? - Correct answer-To make it easier to recover refrigerant.
Which element of a CFC or HCFC molecule causes ozone depletion? - Correct
answer-Chlorine
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
