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EPA Section 608 Technician Certification (HVAC)
Exam | Latest Verified Questions and Detailed
Answers
OVERVIEW DESCRIPTION:
The EPA Section 608 Technician Certification is a federally mandated program under the Clean
Air Act for any technician who maintains, services, repairs, or disposes of HVACR equipment
containing regulated refrigerants. The certification exam is structured into four distinct sections,
each containing 25 multiple-choice questions that require a passing score of 72%. The
mandatory Core section covers fundamental environmental regulations, safety protocols, and
refrigerant characteristics. Technicians must then qualify in at least one of three specialty
types: Type I for small appliances (containing 5 lbs or less of refrigerant), Type II for high-
pressure appliances, or Type III for low-pressure appliances (chillers). A technician who passes
all three specialty exams earns the prestigious Universal certification.
Core Section
QUESTION 1
A technician is disposing of a small appliance containing R-12. According to EPA
regulations, what must be done with the refrigerant before the appliance is scrapped?
A. It must be reclaimed to the AHRI Standard 700 purity level.
B. It must be recovered in accordance with EPA requirements.
C. It can be vented as long as the appliance is leaking.
D. It must be recycled and sold to a certified wholesaler.
CORRECT ANSWER: B
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EXPERT RATIONALE: The Clean Air Act prohibits the intentional venting of ozone-
depleting substances. All refrigerants must be recovered before the appliance is
disposed of to prevent atmospheric release.
QUESTION 2
Under the Clean Air Act, what is the maximum penalty a technician can face for
knowingly releasing a regulated refrigerant?
A. A formal written warning from the EPA
B. A fine of up to $44,539 per day per violation
C. Suspension of their state contractor's license
D. Mandatory retraining and recertification
CORRECT ANSWER: B
EXPERT RATIONALE: The EPA can assess significant civil penalties for violations of the
Clean Air Act. These fines are adjusted for inflation and can be substantial, often
exceeding $44,000 per day, per violation.
QUESTION 3
What is the primary role of chlorine atoms from CFCs in the stratosphere?
A. They combine with oxygen to create more ozone.
B. They act as a catalyst to break down ozone molecules.
C. They form a protective layer against UV radiation.
D. They neutralize other pollutants in the atmosphere.
CORRECT ANSWER: B
EXPERT RATIONALE: Chlorine atoms released from CFCs by UV radiation act as a
catalyst, each one destroying thousands of ozone molecules before being deactivated.
This process is the primary cause of stratospheric ozone depletion .
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QUESTION 4
According to DOT regulations, what is the maximum fill level for a refrigerant recovery
cylinder?
A. 60% of the cylinder's water capacity
B. 80% of the cylinder's water capacity
C. 90% of the cylinder's water capacity
D. 100% of the cylinder's water capacity
CORRECT ANSWER: B
EXPERT RATIONALE: Refrigerant cylinders must never be filled above 80% of their
water capacity to allow for liquid expansion due to temperature increases, preventing a
dangerous hydrostatic pressure rupture .
QUESTION 5
Which international treaty was established to phase out the production of ozone-
depleting substances?
A. The Kyoto Protocol
B. The Paris Agreement
C. The Montreal Protocol
D. The Geneva Convention
CORRECT ANSWER: C
EXPERT RATIONALE: The Montreal Protocol on Substances that Deplete the Ozone
Layer is the landmark international agreement designed to phase out the production
and consumption of ozone-depleting substances like CFCs and HCFCs .
QUESTION 6
What is the primary safety risk when using oxygen or compressed air to pressurize a
, 4|Page
system for leak testing?
A. It will damage the compressor valves.
B. It will cause the oil to become acidic.
C. It can cause an explosion or fire.
D. It will contaminate the refrigerant.
CORRECT ANSWER: C
EXPERT RATIONALE: Oxygen and compressed air mixed with refrigerant oils under
pressure can create a highly explosive mixture. Only inert gases like nitrogen, often with
a trace amount of refrigerant, should be used for leak testing .
QUESTION 7
Which of the following best defines "reclaiming" refrigerant?
A. Cleaning refrigerant for immediate reuse on-site without testing.
B. Removing refrigerant from a system and storing it in an external container.
C. Transferring refrigerant directly from one system to another.
D. Reprocessing refrigerant to AHRI Standard 700, making it "like new."
CORRECT ANSWER: D
EXPERT RATIONALE: Reclaiming is the highest standard of refrigerant processing. It
involves reprocessing the refrigerant to new product specifications (AHRI Standard 700),
which requires chemical analysis .
QUESTION 8
If a technician is recovering a blend like R-410A, why is it crucial to recover it as a liquid?
A. To prevent fractionation, where the blend components leak at different rates.
B. To make the recovery process faster.
EPA Section 608 Technician Certification (HVAC)
Exam | Latest Verified Questions and Detailed
Answers
OVERVIEW DESCRIPTION:
The EPA Section 608 Technician Certification is a federally mandated program under the Clean
Air Act for any technician who maintains, services, repairs, or disposes of HVACR equipment
containing regulated refrigerants. The certification exam is structured into four distinct sections,
each containing 25 multiple-choice questions that require a passing score of 72%. The
mandatory Core section covers fundamental environmental regulations, safety protocols, and
refrigerant characteristics. Technicians must then qualify in at least one of three specialty
types: Type I for small appliances (containing 5 lbs or less of refrigerant), Type II for high-
pressure appliances, or Type III for low-pressure appliances (chillers). A technician who passes
all three specialty exams earns the prestigious Universal certification.
Core Section
QUESTION 1
A technician is disposing of a small appliance containing R-12. According to EPA
regulations, what must be done with the refrigerant before the appliance is scrapped?
A. It must be reclaimed to the AHRI Standard 700 purity level.
B. It must be recovered in accordance with EPA requirements.
C. It can be vented as long as the appliance is leaking.
D. It must be recycled and sold to a certified wholesaler.
CORRECT ANSWER: B
,2|Page
EXPERT RATIONALE: The Clean Air Act prohibits the intentional venting of ozone-
depleting substances. All refrigerants must be recovered before the appliance is
disposed of to prevent atmospheric release.
QUESTION 2
Under the Clean Air Act, what is the maximum penalty a technician can face for
knowingly releasing a regulated refrigerant?
A. A formal written warning from the EPA
B. A fine of up to $44,539 per day per violation
C. Suspension of their state contractor's license
D. Mandatory retraining and recertification
CORRECT ANSWER: B
EXPERT RATIONALE: The EPA can assess significant civil penalties for violations of the
Clean Air Act. These fines are adjusted for inflation and can be substantial, often
exceeding $44,000 per day, per violation.
QUESTION 3
What is the primary role of chlorine atoms from CFCs in the stratosphere?
A. They combine with oxygen to create more ozone.
B. They act as a catalyst to break down ozone molecules.
C. They form a protective layer against UV radiation.
D. They neutralize other pollutants in the atmosphere.
CORRECT ANSWER: B
EXPERT RATIONALE: Chlorine atoms released from CFCs by UV radiation act as a
catalyst, each one destroying thousands of ozone molecules before being deactivated.
This process is the primary cause of stratospheric ozone depletion .
,3|Page
QUESTION 4
According to DOT regulations, what is the maximum fill level for a refrigerant recovery
cylinder?
A. 60% of the cylinder's water capacity
B. 80% of the cylinder's water capacity
C. 90% of the cylinder's water capacity
D. 100% of the cylinder's water capacity
CORRECT ANSWER: B
EXPERT RATIONALE: Refrigerant cylinders must never be filled above 80% of their
water capacity to allow for liquid expansion due to temperature increases, preventing a
dangerous hydrostatic pressure rupture .
QUESTION 5
Which international treaty was established to phase out the production of ozone-
depleting substances?
A. The Kyoto Protocol
B. The Paris Agreement
C. The Montreal Protocol
D. The Geneva Convention
CORRECT ANSWER: C
EXPERT RATIONALE: The Montreal Protocol on Substances that Deplete the Ozone
Layer is the landmark international agreement designed to phase out the production
and consumption of ozone-depleting substances like CFCs and HCFCs .
QUESTION 6
What is the primary safety risk when using oxygen or compressed air to pressurize a
, 4|Page
system for leak testing?
A. It will damage the compressor valves.
B. It will cause the oil to become acidic.
C. It can cause an explosion or fire.
D. It will contaminate the refrigerant.
CORRECT ANSWER: C
EXPERT RATIONALE: Oxygen and compressed air mixed with refrigerant oils under
pressure can create a highly explosive mixture. Only inert gases like nitrogen, often with
a trace amount of refrigerant, should be used for leak testing .
QUESTION 7
Which of the following best defines "reclaiming" refrigerant?
A. Cleaning refrigerant for immediate reuse on-site without testing.
B. Removing refrigerant from a system and storing it in an external container.
C. Transferring refrigerant directly from one system to another.
D. Reprocessing refrigerant to AHRI Standard 700, making it "like new."
CORRECT ANSWER: D
EXPERT RATIONALE: Reclaiming is the highest standard of refrigerant processing. It
involves reprocessing the refrigerant to new product specifications (AHRI Standard 700),
which requires chemical analysis .
QUESTION 8
If a technician is recovering a blend like R-410A, why is it crucial to recover it as a liquid?
A. To prevent fractionation, where the blend components leak at different rates.
B. To make the recovery process faster.
