EPA 608 HVAC Certification Updated 2026 | Comprehensive Study Guide, Practice Exam
Questions and Answers, Exam Prep Test Bank, Refrigerant Handling Regulations, EPA
Compliance Rules, HVAC System Fundamentals, Recovery and Recycling Procedures,
Safety Standards, Section 608 Type I II III Universal Exam Review, and Detailed Revision
Material for Certification Success
Question 1: What is the primary purpose of Section 608 of the Clean Air Act?
A. To set energy efficiency standards for new HVAC equipment.
B. To prohibit the knowing release of refrigerants during the maintenance, service,
repair, or disposal of appliances.
C. To mandate the use of specific brands of recovery machines.
D. To establish certification requirements for electrical safety in HVAC systems.
CORRECT ANSWER: B. To prohibit the knowing release of refrigerants during the
maintenance, service, repair, or disposal of appliances.
Rationale: The fundamental purpose of EPA Section 608 regulations is to prevent the
release of ozone-depleting and non-exempt substitute refrigerants into the
atmosphere .
Question 2: Which of the following refrigerants is EXEMPT from the Section 608
refrigerant management requirements?
A. R-22
B. R-410A
C. Carbon Dioxide (CO2)
D. R-134a
CORRECT ANSWER: C. Carbon Dioxide (CO2)
Rationale: Refrigerants like carbon dioxide, nitrogen, and water are specifically listed as
exempt from the Section 608 refrigerant management requirements .
Question 3: Under EPA regulations, what is the maximum recovery efficiency
required for equipment used on small appliances?
A. 70%
B. 80%
C. 90%
D. 100%
CORRECT ANSWER: C. 90%
Rationale: For small appliances, the EPA requires that recovery equipment be capable
of recovering 90% of the refrigerant, or evacuating the appliance to 4 inches of mercury
vacuum .
Question 4: What vacuum level must be achieved for a small appliance before it is
considered "emptied" under EPA regulations?
A. 0 inches of Hg
B. 2 inches of Hg vacuum
,C. 4 inches of Hg vacuum
D. 10 inches of Hg vacuum
CORRECT ANSWER: C. 4 inches of Hg vacuum
Rationale: For small appliances, the regulations allow for evacuation to 4 inches of
mercury vacuum as a method to comply with disposal requirements .
Question 5: Which type of EPA 608 certification is specifically required to service
small appliances containing five pounds or less of refrigerant?
A. Type I
B. Type II
C. Type III
D. Universal
CORRECT ANSWER: A. Type I
Rationale: Type I certification is limited to servicing small appliances, which are
defined as those containing five pounds or less of refrigerant .
Question 6: A technician is working on a high-pressure chiller. Which EPA 608
certification is required?
A. Type I
B. Type II
C. Type III
D. Universal
CORRECT ANSWER: B. Type II
Rationale: Type II certification is required for servicing or disposing of high-pressure
and very high-pressure appliances, except small appliances .
Question 7: Which certification type is required for a technician servicing a low-
pressure centrifugal chiller?
A. Type I
B. Type II
C. Type III
D. Universal
CORRECT ANSWER: C. Type III
Rationale: Type III certification is specifically designated for servicing low-pressure
appliances .
Question 8: Which certification allows a technician to work on all types of
equipment covered by Section 608?
A. Type I
B. Type II
,C. Type III
D. Universal
CORRECT ANSWER: D. Universal
Rationale: The Universal certification is earned by passing the Core exam and all three
equipment-specific exams (Types I, II, and III), authorizing the technician to work on all
types of equipment .
Question 9: According to the Montreal Protocol, which of the following substances
has the highest ozone depletion potential (ODP)?
A. R-134a
B. R-123
C. R-12
D. R-410A
CORRECT ANSWER: C. R-12
Rationale: R-12 is a CFC (Chlorofluorocarbon) which has a high ODP. HCFCs like R-123
have a lower ODP, and HFCs like R-134a and R-410A have an ODP of zero .
Question 10: What is the primary environmental concern associated with
chlorofluorocarbons (CFCs)?
A. They contribute to smog.
B. They cause acid rain.
C. They deplete the stratospheric ozone layer.
D. They are highly toxic to humans.
CORRECT ANSWER: C. They deplete the stratospheric ozone layer.
Rationale: The primary environmental issue with CFCs is their role in the depletion of
the stratospheric ozone layer, which protects the earth from harmful ultraviolet
radiation .
Question 11: What is the definition of "reclaim" in the context of refrigerant
handling?
A. To clean refrigerant for reuse without testing.
B. To process refrigerant to meet AHRI Standard 700 purity specifications.
C. To remove refrigerant from a system and store it in a cylinder.
D. To use refrigerant from one system in another system without processing.
CORRECT ANSWER: B. To process refrigerant to meet AHRI Standard 700 purity
specifications.
Rationale: Reclamation is the highest level of refrigerant processing. It requires
chemical analysis to ensure the refrigerant meets the purity standards of AHRI Standard
700 and can be sold back to a new owner .
, Question 12: What is the primary difference between "recovery" and "recycling" of
refrigerants?
A. Recovery is for CFCs, recycling is for HFCs.
B. Recycling involves processing for reuse in the same system, while recovery is the
removal of refrigerant.
C. Recovery is a legal requirement, recycling is optional.
D. There is no practical difference.
CORRECT ANSWER: B. Recycling involves processing for reuse in the same system,
while recovery is the removal of refrigerant.
Rationale: "Recovery" is the act of removing refrigerant from a system. "Recycling"
involves cleaning the refrigerant (e.g., by filtering and drying) for reuse in the same
system or equipment owner .
Question 13: What is a "leak rate" in the context of EPA 608 regulations?
A. The amount of refrigerant lost during a recovery process.
B. The percentage of the appliance's full charge that is lost over a 12-month period.
C. The cost of the refrigerant that has escaped.
D. The speed at which refrigerant escapes from a leak.
CORRECT ANSWER: B. The percentage of the appliance's full charge that is lost
over a 12-month period.
Rationale: The leak rate is a critical metric used to determine if an appliance is subject
to EPA's leak repair requirements. It is calculated as the annualized percentage of the
total charge that has leaked .
Question 14: How long must a technician keep records of a refrigerant purchase?
A. 1 year
B. 3 years
C. 5 years
D. 7 years
CORRECT ANSWER: B. 3 years
Rationale: Technicians and companies are required to maintain records of refrigerant
transactions, such as purchase invoices, for a minimum of three years .
Question 15: An appliance contains 50 pounds of R-22 and has an annual leak rate
of 35%. What is required under EPA regulations?
A. No action is required.
B. The appliance must be repaired within 30 days.
C. The leak must be repaired, and the appliance must be retrofitted.
D. The technician must perform a follow-up verification test after the repair.
Questions and Answers, Exam Prep Test Bank, Refrigerant Handling Regulations, EPA
Compliance Rules, HVAC System Fundamentals, Recovery and Recycling Procedures,
Safety Standards, Section 608 Type I II III Universal Exam Review, and Detailed Revision
Material for Certification Success
Question 1: What is the primary purpose of Section 608 of the Clean Air Act?
A. To set energy efficiency standards for new HVAC equipment.
B. To prohibit the knowing release of refrigerants during the maintenance, service,
repair, or disposal of appliances.
C. To mandate the use of specific brands of recovery machines.
D. To establish certification requirements for electrical safety in HVAC systems.
CORRECT ANSWER: B. To prohibit the knowing release of refrigerants during the
maintenance, service, repair, or disposal of appliances.
Rationale: The fundamental purpose of EPA Section 608 regulations is to prevent the
release of ozone-depleting and non-exempt substitute refrigerants into the
atmosphere .
Question 2: Which of the following refrigerants is EXEMPT from the Section 608
refrigerant management requirements?
A. R-22
B. R-410A
C. Carbon Dioxide (CO2)
D. R-134a
CORRECT ANSWER: C. Carbon Dioxide (CO2)
Rationale: Refrigerants like carbon dioxide, nitrogen, and water are specifically listed as
exempt from the Section 608 refrigerant management requirements .
Question 3: Under EPA regulations, what is the maximum recovery efficiency
required for equipment used on small appliances?
A. 70%
B. 80%
C. 90%
D. 100%
CORRECT ANSWER: C. 90%
Rationale: For small appliances, the EPA requires that recovery equipment be capable
of recovering 90% of the refrigerant, or evacuating the appliance to 4 inches of mercury
vacuum .
Question 4: What vacuum level must be achieved for a small appliance before it is
considered "emptied" under EPA regulations?
A. 0 inches of Hg
B. 2 inches of Hg vacuum
,C. 4 inches of Hg vacuum
D. 10 inches of Hg vacuum
CORRECT ANSWER: C. 4 inches of Hg vacuum
Rationale: For small appliances, the regulations allow for evacuation to 4 inches of
mercury vacuum as a method to comply with disposal requirements .
Question 5: Which type of EPA 608 certification is specifically required to service
small appliances containing five pounds or less of refrigerant?
A. Type I
B. Type II
C. Type III
D. Universal
CORRECT ANSWER: A. Type I
Rationale: Type I certification is limited to servicing small appliances, which are
defined as those containing five pounds or less of refrigerant .
Question 6: A technician is working on a high-pressure chiller. Which EPA 608
certification is required?
A. Type I
B. Type II
C. Type III
D. Universal
CORRECT ANSWER: B. Type II
Rationale: Type II certification is required for servicing or disposing of high-pressure
and very high-pressure appliances, except small appliances .
Question 7: Which certification type is required for a technician servicing a low-
pressure centrifugal chiller?
A. Type I
B. Type II
C. Type III
D. Universal
CORRECT ANSWER: C. Type III
Rationale: Type III certification is specifically designated for servicing low-pressure
appliances .
Question 8: Which certification allows a technician to work on all types of
equipment covered by Section 608?
A. Type I
B. Type II
,C. Type III
D. Universal
CORRECT ANSWER: D. Universal
Rationale: The Universal certification is earned by passing the Core exam and all three
equipment-specific exams (Types I, II, and III), authorizing the technician to work on all
types of equipment .
Question 9: According to the Montreal Protocol, which of the following substances
has the highest ozone depletion potential (ODP)?
A. R-134a
B. R-123
C. R-12
D. R-410A
CORRECT ANSWER: C. R-12
Rationale: R-12 is a CFC (Chlorofluorocarbon) which has a high ODP. HCFCs like R-123
have a lower ODP, and HFCs like R-134a and R-410A have an ODP of zero .
Question 10: What is the primary environmental concern associated with
chlorofluorocarbons (CFCs)?
A. They contribute to smog.
B. They cause acid rain.
C. They deplete the stratospheric ozone layer.
D. They are highly toxic to humans.
CORRECT ANSWER: C. They deplete the stratospheric ozone layer.
Rationale: The primary environmental issue with CFCs is their role in the depletion of
the stratospheric ozone layer, which protects the earth from harmful ultraviolet
radiation .
Question 11: What is the definition of "reclaim" in the context of refrigerant
handling?
A. To clean refrigerant for reuse without testing.
B. To process refrigerant to meet AHRI Standard 700 purity specifications.
C. To remove refrigerant from a system and store it in a cylinder.
D. To use refrigerant from one system in another system without processing.
CORRECT ANSWER: B. To process refrigerant to meet AHRI Standard 700 purity
specifications.
Rationale: Reclamation is the highest level of refrigerant processing. It requires
chemical analysis to ensure the refrigerant meets the purity standards of AHRI Standard
700 and can be sold back to a new owner .
, Question 12: What is the primary difference between "recovery" and "recycling" of
refrigerants?
A. Recovery is for CFCs, recycling is for HFCs.
B. Recycling involves processing for reuse in the same system, while recovery is the
removal of refrigerant.
C. Recovery is a legal requirement, recycling is optional.
D. There is no practical difference.
CORRECT ANSWER: B. Recycling involves processing for reuse in the same system,
while recovery is the removal of refrigerant.
Rationale: "Recovery" is the act of removing refrigerant from a system. "Recycling"
involves cleaning the refrigerant (e.g., by filtering and drying) for reuse in the same
system or equipment owner .
Question 13: What is a "leak rate" in the context of EPA 608 regulations?
A. The amount of refrigerant lost during a recovery process.
B. The percentage of the appliance's full charge that is lost over a 12-month period.
C. The cost of the refrigerant that has escaped.
D. The speed at which refrigerant escapes from a leak.
CORRECT ANSWER: B. The percentage of the appliance's full charge that is lost
over a 12-month period.
Rationale: The leak rate is a critical metric used to determine if an appliance is subject
to EPA's leak repair requirements. It is calculated as the annualized percentage of the
total charge that has leaked .
Question 14: How long must a technician keep records of a refrigerant purchase?
A. 1 year
B. 3 years
C. 5 years
D. 7 years
CORRECT ANSWER: B. 3 years
Rationale: Technicians and companies are required to maintain records of refrigerant
transactions, such as purchase invoices, for a minimum of three years .
Question 15: An appliance contains 50 pounds of R-22 and has an annual leak rate
of 35%. What is required under EPA regulations?
A. No action is required.
B. The appliance must be repaired within 30 days.
C. The leak must be repaired, and the appliance must be retrofitted.
D. The technician must perform a follow-up verification test after the repair.
