EPA Section 609 Exam Questions
With Correct Answers
Course
EPA 609
1. What is the primary purpose of the Clean Air Act Section 609 certification?
A. To certify electricians
B. To regulate refrigerant handling in motor vehicle air conditioning systems
C. To train diesel mechanics
D. To certify vehicle inspectors
Correct Answer: B. To regulate refrigerant handling in motor vehicle air conditioning systems
Rationale: EPA Section 609 certification is required for technicians who service Motor Vehicle
Air Conditioning (MVAC) systems and handle regulated refrigerants to reduce ozone depletion
and environmental damage.
2. Which refrigerant was commonly used in older vehicle air conditioning systems before
being phased out due to ozone depletion concerns?
A. R-134a
B. R-1234yf
C. R-12
D. R-410A
Correct Answer: C. R-12
Rationale: R-12 is a chlorofluorocarbon (CFC) refrigerant that damages the ozone layer. Its
production was phased out under environmental regulations.
3. What must technicians do before opening an MVAC system for service?
A. Add refrigerant
B. Flush the compressor
C. Recover the refrigerant using approved equipment
D. Disconnect the battery only
Correct Answer: C. Recover the refrigerant using approved equipment
Rationale: Venting refrigerant into the atmosphere is illegal. Refrigerant must be properly
recovered before servicing the system.
4. Which refrigerant is commonly used in modern vehicle air conditioning systems?
A. R-22
B. R-11
,C. R-134a
D. Ammonia
Correct Answer: C. R-134a
Rationale: R-134a replaced R-12 in many vehicles because it has less ozone depletion potential.
5. What is the EPA penalty for knowingly venting refrigerant into the atmosphere?
A. Warning only
B. Loss of driver’s license
C. Fines and possible legal penalties
D. Vehicle impoundment only
Correct Answer: C. Fines and possible legal penalties
Rationale: Federal law prohibits intentional venting of refrigerants, and violators may face
substantial fines and enforcement actions.
6. Which equipment is required for refrigerant recovery during MVAC servicing?
A. Vacuum cleaner
B. EPA-approved refrigerant recovery or recycling equipment
C. Tire pressure gauge
D. Standard air compressor
Correct Answer: B. EPA-approved refrigerant recovery or recycling equipment
Rationale: Only EPA-approved recovery/recycling equipment meets the standards necessary for
safe refrigerant handling.
7. What should a technician do if contaminated refrigerant is discovered in a recovery
cylinder?
A. Mix it with clean refrigerant
B. Release it outdoors
C. Send it to a certified reclaimer or dispose of it properly
D. Reuse it immediately
Correct Answer: C. Send it to a certified reclaimer or dispose of it properly
Rationale: Contaminated refrigerant can damage equipment and must be reclaimed or disposed
of according to EPA regulations.
8. Why is refrigerant recovery important?
A. It improves tire pressure
B. It increases engine oil life
, C. It protects the environment from harmful emissions
D. It cools the engine faster
Correct Answer: C. It protects the environment from harmful emissions
Rationale: Refrigerants can contribute to ozone depletion and global warming if released into the
atmosphere.
9. Which of the following is true regarding refrigerant containers?
A. They can be overfilled without concern
B. They should only be filled to the recommended capacity
C. They should be stored upside down
D. They do not require labeling
Correct Answer: B. They should only be filled to the recommended capacity
Rationale: Overfilling refrigerant cylinders creates pressure hazards and violates safety
regulations.
10. What is the purpose of recycling refrigerant during service?
A. To change refrigerant color
B. To remove moisture and contaminants for reuse
C. To increase fuel economy directly
D. To replace the compressor
Correct Answer: B. To remove moisture and contaminants for reuse
Rationale: Recycling cleans refrigerant by removing impurities, allowing it to be safely reused in
MVAC systems.
11. What does MVAC stand for?
A. Motor Vehicle Air Conditioning
B. Mechanical Ventilation and Air Cooling
C. Mobile Ventilation Air Control
D. Motorized Vehicle Air Compressor
Correct Answer: A. Motor Vehicle Air Conditioning
Rationale: MVAC refers specifically to air conditioning systems used in motor vehicles.
12. Which refrigerant oil is commonly used with R-134a systems?
A. Mineral oil
B. PAG oil
With Correct Answers
Course
EPA 609
1. What is the primary purpose of the Clean Air Act Section 609 certification?
A. To certify electricians
B. To regulate refrigerant handling in motor vehicle air conditioning systems
C. To train diesel mechanics
D. To certify vehicle inspectors
Correct Answer: B. To regulate refrigerant handling in motor vehicle air conditioning systems
Rationale: EPA Section 609 certification is required for technicians who service Motor Vehicle
Air Conditioning (MVAC) systems and handle regulated refrigerants to reduce ozone depletion
and environmental damage.
2. Which refrigerant was commonly used in older vehicle air conditioning systems before
being phased out due to ozone depletion concerns?
A. R-134a
B. R-1234yf
C. R-12
D. R-410A
Correct Answer: C. R-12
Rationale: R-12 is a chlorofluorocarbon (CFC) refrigerant that damages the ozone layer. Its
production was phased out under environmental regulations.
3. What must technicians do before opening an MVAC system for service?
A. Add refrigerant
B. Flush the compressor
C. Recover the refrigerant using approved equipment
D. Disconnect the battery only
Correct Answer: C. Recover the refrigerant using approved equipment
Rationale: Venting refrigerant into the atmosphere is illegal. Refrigerant must be properly
recovered before servicing the system.
4. Which refrigerant is commonly used in modern vehicle air conditioning systems?
A. R-22
B. R-11
,C. R-134a
D. Ammonia
Correct Answer: C. R-134a
Rationale: R-134a replaced R-12 in many vehicles because it has less ozone depletion potential.
5. What is the EPA penalty for knowingly venting refrigerant into the atmosphere?
A. Warning only
B. Loss of driver’s license
C. Fines and possible legal penalties
D. Vehicle impoundment only
Correct Answer: C. Fines and possible legal penalties
Rationale: Federal law prohibits intentional venting of refrigerants, and violators may face
substantial fines and enforcement actions.
6. Which equipment is required for refrigerant recovery during MVAC servicing?
A. Vacuum cleaner
B. EPA-approved refrigerant recovery or recycling equipment
C. Tire pressure gauge
D. Standard air compressor
Correct Answer: B. EPA-approved refrigerant recovery or recycling equipment
Rationale: Only EPA-approved recovery/recycling equipment meets the standards necessary for
safe refrigerant handling.
7. What should a technician do if contaminated refrigerant is discovered in a recovery
cylinder?
A. Mix it with clean refrigerant
B. Release it outdoors
C. Send it to a certified reclaimer or dispose of it properly
D. Reuse it immediately
Correct Answer: C. Send it to a certified reclaimer or dispose of it properly
Rationale: Contaminated refrigerant can damage equipment and must be reclaimed or disposed
of according to EPA regulations.
8. Why is refrigerant recovery important?
A. It improves tire pressure
B. It increases engine oil life
, C. It protects the environment from harmful emissions
D. It cools the engine faster
Correct Answer: C. It protects the environment from harmful emissions
Rationale: Refrigerants can contribute to ozone depletion and global warming if released into the
atmosphere.
9. Which of the following is true regarding refrigerant containers?
A. They can be overfilled without concern
B. They should only be filled to the recommended capacity
C. They should be stored upside down
D. They do not require labeling
Correct Answer: B. They should only be filled to the recommended capacity
Rationale: Overfilling refrigerant cylinders creates pressure hazards and violates safety
regulations.
10. What is the purpose of recycling refrigerant during service?
A. To change refrigerant color
B. To remove moisture and contaminants for reuse
C. To increase fuel economy directly
D. To replace the compressor
Correct Answer: B. To remove moisture and contaminants for reuse
Rationale: Recycling cleans refrigerant by removing impurities, allowing it to be safely reused in
MVAC systems.
11. What does MVAC stand for?
A. Motor Vehicle Air Conditioning
B. Mechanical Ventilation and Air Cooling
C. Mobile Ventilation Air Control
D. Motorized Vehicle Air Compressor
Correct Answer: A. Motor Vehicle Air Conditioning
Rationale: MVAC refers specifically to air conditioning systems used in motor vehicles.
12. Which refrigerant oil is commonly used with R-134a systems?
A. Mineral oil
B. PAG oil
