EPA SECTION 608 UNIVERSAL
CERTIFICATION EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
| INSTANT DOWNLOAD PDF
1. What is the primary purpose of the Clean Air Act as it relates to
refrigerants?
A) To regulate water pollution
B) To control greenhouse gas emissions
C) To protect the ozone layer by regulating ozone-depleting substances
D) To regulate solid waste disposal
Rationale: The Clean Air Act established regulations for ozone-depleting
substances to protect the stratospheric ozone layer.
2. Which of the following refrigerants has zero Ozone Depletion Potential
(ODP)?
A) R-12
B) R-22
C) R-134a
D) R-11
Rationale: R-134a is a HFC with zero ODP, making it a common
replacement for CFCs and HCFCs.
3. Universal certification allows a technician to work on which types of
equipment?
A) Small appliances only
B) All types of equipment containing ozone-depleting refrigerants
C) Only commercial refrigeration
, D) Automotive air conditioning only
Rationale: Universal certification permits work on any type of equipment
containing regulated refrigerants.
4. Which refrigerant is classified as a Class I substance under the Clean Air
Act?
A) R-134a
B) R-410A
C) R-12
D) R-22
Rationale: Class I substances include CFCs such as R-12, which are being
phased out due to their high ODP.
5. Which of the following is true regarding refrigerant recovery?
A) It is optional during maintenance
B) Only required for CFCs
C) It is mandatory for all ozone-depleting refrigerants
D) It is only required for recycling
Rationale: Technicians must recover all ozone-depleting refrigerants
before opening a system.
6. What is the correct recovery method for a small appliance with 5 lbs or less
of refrigerant?
A) Push-pull method
B) Self-contained recovery unit
C) Open-air venting
D) Direct transfer to another appliance
Rationale: Small appliances require a certified self-contained recovery
unit.
7. What is the main difference between recycling and reclaiming refrigerants?
A) Recycling cleans refrigerant for reuse, reclaiming restores it to industry
standards
B) Recycling requires lab testing
C) Reclaiming can be done in the field
, D) There is no difference
Rationale: Recycling is on-site cleaning; reclaiming restores refrigerant to
new-equipment purity standards.
8. Which of the following is NOT a component of an air-conditioning system?
A) Compressor
B) Condenser
C) Evaporator
D) Catalytic converter
Rationale: Catalytic converters are part of vehicle exhaust systems, not
refrigeration.
9. Which type of refrigerant is commonly used as a replacement for R-22?
A) R-11
B) R-407C
C) R-12
D) R-500
Rationale: R-407C is an HFC blend used as a retrofit for R-22 systems.
10.What is the safe practice for handling refrigerants?
A) Always vent small amounts outdoors
B) Wear protective equipment and avoid direct contact
C) Mix refrigerants to increase efficiency
D) Use any container for storage
Rationale: Refrigerants can cause frostbite or respiratory harm; proper
PPE is essential.
11.Which equipment requires Type I certification only?
A) Small appliances
B) Residential AC units
C) Industrial chillers
D) Commercial refrigeration
Rationale: Type I covers small appliances containing 5 lbs or less of
refrigerant.
CERTIFICATION EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
| INSTANT DOWNLOAD PDF
1. What is the primary purpose of the Clean Air Act as it relates to
refrigerants?
A) To regulate water pollution
B) To control greenhouse gas emissions
C) To protect the ozone layer by regulating ozone-depleting substances
D) To regulate solid waste disposal
Rationale: The Clean Air Act established regulations for ozone-depleting
substances to protect the stratospheric ozone layer.
2. Which of the following refrigerants has zero Ozone Depletion Potential
(ODP)?
A) R-12
B) R-22
C) R-134a
D) R-11
Rationale: R-134a is a HFC with zero ODP, making it a common
replacement for CFCs and HCFCs.
3. Universal certification allows a technician to work on which types of
equipment?
A) Small appliances only
B) All types of equipment containing ozone-depleting refrigerants
C) Only commercial refrigeration
, D) Automotive air conditioning only
Rationale: Universal certification permits work on any type of equipment
containing regulated refrigerants.
4. Which refrigerant is classified as a Class I substance under the Clean Air
Act?
A) R-134a
B) R-410A
C) R-12
D) R-22
Rationale: Class I substances include CFCs such as R-12, which are being
phased out due to their high ODP.
5. Which of the following is true regarding refrigerant recovery?
A) It is optional during maintenance
B) Only required for CFCs
C) It is mandatory for all ozone-depleting refrigerants
D) It is only required for recycling
Rationale: Technicians must recover all ozone-depleting refrigerants
before opening a system.
6. What is the correct recovery method for a small appliance with 5 lbs or less
of refrigerant?
A) Push-pull method
B) Self-contained recovery unit
C) Open-air venting
D) Direct transfer to another appliance
Rationale: Small appliances require a certified self-contained recovery
unit.
7. What is the main difference between recycling and reclaiming refrigerants?
A) Recycling cleans refrigerant for reuse, reclaiming restores it to industry
standards
B) Recycling requires lab testing
C) Reclaiming can be done in the field
, D) There is no difference
Rationale: Recycling is on-site cleaning; reclaiming restores refrigerant to
new-equipment purity standards.
8. Which of the following is NOT a component of an air-conditioning system?
A) Compressor
B) Condenser
C) Evaporator
D) Catalytic converter
Rationale: Catalytic converters are part of vehicle exhaust systems, not
refrigeration.
9. Which type of refrigerant is commonly used as a replacement for R-22?
A) R-11
B) R-407C
C) R-12
D) R-500
Rationale: R-407C is an HFC blend used as a retrofit for R-22 systems.
10.What is the safe practice for handling refrigerants?
A) Always vent small amounts outdoors
B) Wear protective equipment and avoid direct contact
C) Mix refrigerants to increase efficiency
D) Use any container for storage
Rationale: Refrigerants can cause frostbite or respiratory harm; proper
PPE is essential.
11.Which equipment requires Type I certification only?
A) Small appliances
B) Residential AC units
C) Industrial chillers
D) Commercial refrigeration
Rationale: Type I covers small appliances containing 5 lbs or less of
refrigerant.
