EPA-608 Type III Certification Practice Exam (2025–2026) – Practice Questions, Verified Answers, and Rationales

EPA-608 Type III Certification Practice
Exam Questions And Correct Answers
(Verified Answers) Plus Rationales
2025|2026 Q&A


1. What is the primary purpose of the EPA Section 608 certification?
a. To ensure proper installation of HVAC systems
b. To regulate the manufacturing of refrigerants
c. To ensure technicians handle refrigerants safely and legally
d. To enforce building codes

Rationale: The EPA Section 608 certification ensures that technicians are
trained in the safe handling, recovery, and recycling of ozone-depleting
refrigerants, protecting the environment.

2. Which type of equipment requires a Type III certification?
a. Residential split systems
b. Small appliances
c. Commercial or industrial high-pressure appliances

, d. High-pressure and very high-pressure appliances containing more
than 50 pounds of refrigerant

Rationale: Type III certification is required for technicians servicing high-
pressure and very high-pressure appliances, typically commercial or
industrial systems.

3. Which of the following is a high-pressure refrigerant commonly found
in commercial equipment?
a. R-134a
b. R-410A
c. R-600a
d. R-1234yf

Rationale: R-410A is a high-pressure refrigerant commonly used in
commercial air conditioning systems.

4. What is the main environmental concern associated with refrigerants
covered under the Clean Air Act?
a. Water pollution
b. Soil contamination
c. Ozone depletion and global warming
d. Noise pollution

Rationale: The Clean Air Act regulates refrigerants because of their
potential to deplete the ozone layer and contribute to climate change.

, 5. Before opening a high-pressure system, what must a technician do?
a. Turn off the electrical supply only
b. Recover all refrigerant using approved recovery equipment
c. Vent the refrigerant to the atmosphere
d. Remove insulation

Rationale: Technicians must recover refrigerants before servicing
equipment to prevent environmental damage and comply with the law.

6. What is the maximum allowable leak rate for commercial refrigeration
systems under EPA regulations?
a. 5% per year
b. 10% per year
c. 15% per year
d. 20% per year

Rationale: The EPA mandates repair of leaks in commercial refrigeration
systems if the leak rate exceeds 10% per year for systems containing more
than 50 pounds of refrigerant.

7. Which tool is required for measuring refrigerant pressures in high-
pressure systems?
a. Thermometer
b. Manifold gauge set
c. Multimeter
d. Clamp meter

, Rationale: A manifold gauge set is essential for accurately measuring the
v v v v v v v v v v




v high and low side pressures of refrigeration systems.
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8. What does the term “recovery” refer to in refrigerant handling?
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a. Repairing leaks v




b. Removing refrigerant from a system and storing it in a container
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c. Recharging a system with new refrigerant v v v v v




d. Cleaning refrigerant lines v v




Rationale: Recovery involves safely removing refrigerants from equipment
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v into approved containers for reuse, recycling, or disposal.
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9. What is the primary difference between Type I and Type III
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certification?
v




a. Type I is for small appliances, Type III is for low-pressure systems
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b. Type I is for commercial equipment, Type III is for small appliances
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c. Type I is for small appliances, Type III is for high-pressure systems
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d. There is no difference v v v




Rationale: Type I certification is for servicing small appliances, while Type
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v III certification is for high-pressure and very high-pressure systems.
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10. Which refrigerant has the highest pressure among these
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v commonly used in Type III systems? v v v v v




a. R-22
b. R-134a