EPA SECTION 608 UNIVERSAL CERTIFICATION
PRACTICE EXAM STUDY GUIDE UPDATED
2026/2027 | VERIFIED QUESTIONS AND ANSWERS
WITH DETAILED RATIONALES | CORE TYPE I II III
REFRIGERATION EXAM PREP
• This study guide contains 200 verified practice questions with detailed EXPERT
RATIONALE to help you master every section of the EPA 608 Universal Certification
Exam — covering Core, Type I, Type II, and Type III.
• Use this material by reading each question carefully, selecting your answer before
checking the highlighted correct option, and studying the EXPERT RATIONALE to
reinforce understanding of the concept.
QUESTION 1
What is the primary purpose of the EPA Section 608 regulations?
A. To increase the efficiency of refrigeration systems
B. To regulate the sale of refrigeration equipment
C. To reduce the emission of ozone-depleting refrigerants into the atmosphere
D. To certify technicians in electrical safety
E. To establish energy consumption standards for HVAC equipment
C. To reduce the emission of ozone-depleting refrigerants into the
atmosphere
EXPERT RATIONALE: EPA Section 608 was established under the Clean Air Act to
minimize the release of refrigerants that deplete the stratospheric ozone layer.
Technicians must follow proper handling, recovery, and recycling procedures to comply.
QUESTION 2
Which federal law gives the EPA authority to regulate refrigerant handling?
,A. The Energy Policy Act
B. The National Environmental Policy Act
C. The Resource Conservation and Recovery Act
D. The Clean Air Act
E. The Safe Drinking Water Act
D. The Clean Air Act
EXPERT RATIONALE: Section 608 of the Clean Air Act authorizes the EPA to regulate
the handling of refrigerants used in stationary refrigeration and air conditioning
equipment to protect the ozone layer.
QUESTION 3
Which refrigerant group is most harmful to the stratospheric ozone layer?
A. HFCs (Hydrofluorocarbons)
B. HFOs (Hydrofluoroolefins)
C. Natural refrigerants
D. CFCs (Chlorofluorocarbons)
E. Blended refrigerants
D. CFCs (Chlorofluorocarbons)
EXPERT RATIONALE: CFCs have the highest Ozone Depletion Potential (ODP) because
they release chlorine atoms in the stratosphere, which catalytically destroy ozone
molecules.
QUESTION 4
What does ODP stand for in refrigeration?
A. Operational Depletion Pressure
,B. Ozone Depletion Potential
C. Oxygen Displacement Parameter
D. Overall Discharge Pressure
E. Ozone Destruction Process
B. Ozone Depletion Potential
EXPERT RATIONALE: ODP measures how much a refrigerant can destroy the
stratospheric ozone layer relative to R-11, which has an ODP of 1.0. CFCs have high
ODPs; HFCs have an ODP of zero.
QUESTION 5
What does GWP stand for?
A. Gas Weight Parameter
B. General Working Pressure
C. Global Warming Potential
D. Gauge Working Pressure
E. Ground Water Protection
C. Global Warming Potential
EXPERT RATIONALE: GWP measures how much heat a greenhouse gas traps in the
atmosphere relative to carbon dioxide (CO₂), which has a GWP of 1. Refrigerants with
high GWP contribute significantly to climate change.
QUESTION 6
Which of the following refrigerants has an ODP of zero?
A. R-11
B. R-12
, C. R-22
D. R-502
E. R-410A
E. R-410A
EXPERT RATIONALE: R-410A is an HFC refrigerant with zero ozone depletion
potential because it contains no chlorine. However, it does have a high GWP of
approximately 2,088.
QUESTION 7
Who must be certified to purchase refrigerants in containers larger than 2
pounds?
A. Any person with a business license
B. Only engineers and designers
C. Any EPA Section 608 certified technician
D. Only contractors with state licenses
E. No certification is needed for any purchase
C. Any EPA Section 608 certified technician
EXPERT RATIONALE: The EPA requires that only certified technicians purchase
refrigerants in containers larger than 2 lbs. This rule applies to all refrigerants covered
under Section 608 to prevent improper handling.
QUESTION 8
What is the maximum allowable leak rate for commercial refrigeration
equipment before repair is required?
A. 5%
B. 10%
PRACTICE EXAM STUDY GUIDE UPDATED
2026/2027 | VERIFIED QUESTIONS AND ANSWERS
WITH DETAILED RATIONALES | CORE TYPE I II III
REFRIGERATION EXAM PREP
• This study guide contains 200 verified practice questions with detailed EXPERT
RATIONALE to help you master every section of the EPA 608 Universal Certification
Exam — covering Core, Type I, Type II, and Type III.
• Use this material by reading each question carefully, selecting your answer before
checking the highlighted correct option, and studying the EXPERT RATIONALE to
reinforce understanding of the concept.
QUESTION 1
What is the primary purpose of the EPA Section 608 regulations?
A. To increase the efficiency of refrigeration systems
B. To regulate the sale of refrigeration equipment
C. To reduce the emission of ozone-depleting refrigerants into the atmosphere
D. To certify technicians in electrical safety
E. To establish energy consumption standards for HVAC equipment
C. To reduce the emission of ozone-depleting refrigerants into the
atmosphere
EXPERT RATIONALE: EPA Section 608 was established under the Clean Air Act to
minimize the release of refrigerants that deplete the stratospheric ozone layer.
Technicians must follow proper handling, recovery, and recycling procedures to comply.
QUESTION 2
Which federal law gives the EPA authority to regulate refrigerant handling?
,A. The Energy Policy Act
B. The National Environmental Policy Act
C. The Resource Conservation and Recovery Act
D. The Clean Air Act
E. The Safe Drinking Water Act
D. The Clean Air Act
EXPERT RATIONALE: Section 608 of the Clean Air Act authorizes the EPA to regulate
the handling of refrigerants used in stationary refrigeration and air conditioning
equipment to protect the ozone layer.
QUESTION 3
Which refrigerant group is most harmful to the stratospheric ozone layer?
A. HFCs (Hydrofluorocarbons)
B. HFOs (Hydrofluoroolefins)
C. Natural refrigerants
D. CFCs (Chlorofluorocarbons)
E. Blended refrigerants
D. CFCs (Chlorofluorocarbons)
EXPERT RATIONALE: CFCs have the highest Ozone Depletion Potential (ODP) because
they release chlorine atoms in the stratosphere, which catalytically destroy ozone
molecules.
QUESTION 4
What does ODP stand for in refrigeration?
A. Operational Depletion Pressure
,B. Ozone Depletion Potential
C. Oxygen Displacement Parameter
D. Overall Discharge Pressure
E. Ozone Destruction Process
B. Ozone Depletion Potential
EXPERT RATIONALE: ODP measures how much a refrigerant can destroy the
stratospheric ozone layer relative to R-11, which has an ODP of 1.0. CFCs have high
ODPs; HFCs have an ODP of zero.
QUESTION 5
What does GWP stand for?
A. Gas Weight Parameter
B. General Working Pressure
C. Global Warming Potential
D. Gauge Working Pressure
E. Ground Water Protection
C. Global Warming Potential
EXPERT RATIONALE: GWP measures how much heat a greenhouse gas traps in the
atmosphere relative to carbon dioxide (CO₂), which has a GWP of 1. Refrigerants with
high GWP contribute significantly to climate change.
QUESTION 6
Which of the following refrigerants has an ODP of zero?
A. R-11
B. R-12
, C. R-22
D. R-502
E. R-410A
E. R-410A
EXPERT RATIONALE: R-410A is an HFC refrigerant with zero ozone depletion
potential because it contains no chlorine. However, it does have a high GWP of
approximately 2,088.
QUESTION 7
Who must be certified to purchase refrigerants in containers larger than 2
pounds?
A. Any person with a business license
B. Only engineers and designers
C. Any EPA Section 608 certified technician
D. Only contractors with state licenses
E. No certification is needed for any purchase
C. Any EPA Section 608 certified technician
EXPERT RATIONALE: The EPA requires that only certified technicians purchase
refrigerants in containers larger than 2 lbs. This rule applies to all refrigerants covered
under Section 608 to prevent improper handling.
QUESTION 8
What is the maximum allowable leak rate for commercial refrigeration
equipment before repair is required?
A. 5%
B. 10%
