EPA Section 608 Certification
Exam Questions And Correct
Answers (Verified Answers)
Plus Rationales 2025 Q&A |
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1. Under EPA Section 608 regulations, technicians must primarily prevent the
release of:
A. Carbon dioxide
B. Refrigerants into the atmosphere
C. Water vapor
D. Nitrogen gas
Answer: B
Rationale: Section 608 focuses on preventing ozone-depleting and high-
GWP refrigerant emissions.
2. Which refrigerant is classified as an ozone-depleting substance?
A. R-410A
B. R-134a
C. R-22
D. R-32
Answer: C
Rationale: R-22 is a HCFC that depletes ozone.
3. Before opening a sealed refrigeration system for service, a certified
technician must:
A. Add refrigerant
, B. Recover refrigerant using approved equipment
C. Vent refrigerant if minor leak exists
D. Increase system pressure
Answer: B
Rationale: Venting refrigerant is illegal; recovery is required.
4. The EPA requires refrigerant recovery to what minimum level for systems
with compressors:
A. 0 psig
B. Atmospheric pressure only
C. Vacuum level specified by appliance type and recovery category
D. Any pressure is acceptable
Answer: C
Rationale: Required recovery levels depend on appliance type and recovery
method.
5. Which practice is strictly prohibited under Section 608?
A. Recovering refrigerant
B. Recycling refrigerant
C. Venting refrigerant to atmosphere
D. Repairing leaks
Answer: C
Rationale: Intentional venting is illegal.
6. A technician suspects a small leak in a residential AC system. FIRST step is
to:
A. Add refrigerant
B. Locate and repair leak before recharging
C. Vent remaining refrigerant
D. Replace compressor immediately
Answer: B
Rationale: Leaks must be repaired before recharge.
7. Which refrigerant is commonly used in newer residential systems and has
no ozone depletion potential?
A. R-22
B. R-12
, C. R-410A
D. R-11
Answer: C
Rationale: R-410A is an HFC with zero ozone depletion.
8. Refrigerant recovery equipment must be:
A. Home-built
B. EPA-certified for the specific refrigerant type
C. Optional for small systems
D. Used only in commercial systems
Answer: B
Rationale: EPA requires certified recovery machines.
9. When recovering refrigerant from a system, the technician must avoid:
A. Using gauges
B. Mixing refrigerants
C. Using recovery tank
D. Using approved equipment
Answer: B
Rationale: Mixing refrigerants makes them unreclaimable.
10.A cylinder marked “DOT 4BA400” indicates:
A. Electrical rating
B. Refrigerant pressure cylinder specification
C. Air compressor rating
D. Oil capacity
Answer: B
Rationale: DOT markings indicate cylinder pressure rating.
11.A system contains both R-22 and R-410A due to improper servicing. This is:
A. Acceptable
B. Cross-contamination and illegal for reuse
C. Required for performance
D. Recommended practice
Answer: B
Rationale: Mixed refrigerants cannot be reused.
, 12.Recovery of refrigerant must be performed:
A. Only outdoors
B. Without releasing refrigerant to atmosphere
C. By venting first
D. Only during winter
Answer: B
Rationale: No intentional venting allowed.
13.A technician finds oil in a recovered refrigerant tank. This indicates:
A. Proper recovery
B. System contamination or compressor wear
C. Normal condition
D. Overcharge only
Answer: B
Rationale: Oil presence indicates system issues.
14.The purpose of EPA Section 608 certification is to:
A. Increase HVAC efficiency
B. Regulate refrigerant handling and prevent environmental damage
C. Install ductwork
D. Test electrical systems
Answer: B
Rationale: Focus is environmental protection.
15.A technician performs a repair that opens the refrigerant circuit. What is
required before returning system to service?
A. Add oil only
B. Evacuate and recharge properly
C. Vent system
D. Increase airflow
Answer: B
Rationale: System must be properly evacuated and charged.
16.Which tool is used to detect refrigerant leaks electronically?
A. Manifold gauge
B. Leak detector
C. Psychrometer
Exam Questions And Correct
Answers (Verified Answers)
Plus Rationales 2025 Q&A |
Instant Download PDF
1. Under EPA Section 608 regulations, technicians must primarily prevent the
release of:
A. Carbon dioxide
B. Refrigerants into the atmosphere
C. Water vapor
D. Nitrogen gas
Answer: B
Rationale: Section 608 focuses on preventing ozone-depleting and high-
GWP refrigerant emissions.
2. Which refrigerant is classified as an ozone-depleting substance?
A. R-410A
B. R-134a
C. R-22
D. R-32
Answer: C
Rationale: R-22 is a HCFC that depletes ozone.
3. Before opening a sealed refrigeration system for service, a certified
technician must:
A. Add refrigerant
, B. Recover refrigerant using approved equipment
C. Vent refrigerant if minor leak exists
D. Increase system pressure
Answer: B
Rationale: Venting refrigerant is illegal; recovery is required.
4. The EPA requires refrigerant recovery to what minimum level for systems
with compressors:
A. 0 psig
B. Atmospheric pressure only
C. Vacuum level specified by appliance type and recovery category
D. Any pressure is acceptable
Answer: C
Rationale: Required recovery levels depend on appliance type and recovery
method.
5. Which practice is strictly prohibited under Section 608?
A. Recovering refrigerant
B. Recycling refrigerant
C. Venting refrigerant to atmosphere
D. Repairing leaks
Answer: C
Rationale: Intentional venting is illegal.
6. A technician suspects a small leak in a residential AC system. FIRST step is
to:
A. Add refrigerant
B. Locate and repair leak before recharging
C. Vent remaining refrigerant
D. Replace compressor immediately
Answer: B
Rationale: Leaks must be repaired before recharge.
7. Which refrigerant is commonly used in newer residential systems and has
no ozone depletion potential?
A. R-22
B. R-12
, C. R-410A
D. R-11
Answer: C
Rationale: R-410A is an HFC with zero ozone depletion.
8. Refrigerant recovery equipment must be:
A. Home-built
B. EPA-certified for the specific refrigerant type
C. Optional for small systems
D. Used only in commercial systems
Answer: B
Rationale: EPA requires certified recovery machines.
9. When recovering refrigerant from a system, the technician must avoid:
A. Using gauges
B. Mixing refrigerants
C. Using recovery tank
D. Using approved equipment
Answer: B
Rationale: Mixing refrigerants makes them unreclaimable.
10.A cylinder marked “DOT 4BA400” indicates:
A. Electrical rating
B. Refrigerant pressure cylinder specification
C. Air compressor rating
D. Oil capacity
Answer: B
Rationale: DOT markings indicate cylinder pressure rating.
11.A system contains both R-22 and R-410A due to improper servicing. This is:
A. Acceptable
B. Cross-contamination and illegal for reuse
C. Required for performance
D. Recommended practice
Answer: B
Rationale: Mixed refrigerants cannot be reused.
, 12.Recovery of refrigerant must be performed:
A. Only outdoors
B. Without releasing refrigerant to atmosphere
C. By venting first
D. Only during winter
Answer: B
Rationale: No intentional venting allowed.
13.A technician finds oil in a recovered refrigerant tank. This indicates:
A. Proper recovery
B. System contamination or compressor wear
C. Normal condition
D. Overcharge only
Answer: B
Rationale: Oil presence indicates system issues.
14.The purpose of EPA Section 608 certification is to:
A. Increase HVAC efficiency
B. Regulate refrigerant handling and prevent environmental damage
C. Install ductwork
D. Test electrical systems
Answer: B
Rationale: Focus is environmental protection.
15.A technician performs a repair that opens the refrigerant circuit. What is
required before returning system to service?
A. Add oil only
B. Evacuate and recharge properly
C. Vent system
D. Increase airflow
Answer: B
Rationale: System must be properly evacuated and charged.
16.Which tool is used to detect refrigerant leaks electronically?
A. Manifold gauge
B. Leak detector
C. Psychrometer
