200+ Free EPA 608 Practice Questions
Pass your EPA Section 608 Refrigerant Certification exam on the first try — instant access, no signup required.
What is the primary environmental concern associated with CFC and HCFC refrigerants?
Key Facts: EPA 608 Exam
70%
Passing Score
18/25 per section
84%
Type I Score
21/25 (open-book)
70-80%
Pass Rate
Industry estimate
Never
Expiration
Lifetime certification
$75-150
Exam Fee
Varies by provider
200+
Practice Questions
OpenExamPrep
The EPA 608 exam requires 70% to pass each section (84% for open-book Type I). The certification has a 70-80% pass rate for candidates who study. Technicians must pass Core plus at least one type to handle refrigerants. The Universal certification (all sections) allows work on any appliance. Certification never expires and is required nationwide under 40 CFR Part 82.
Sample EPA 608 Practice Questions
Try these sample questions to test your EPA 608 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 200+ question experience with AI tutoring.
1What is the primary environmental concern associated with CFC and HCFC refrigerants?
2What does the "O" in CFC stand for?
3Which international agreement was established to phase out the production and consumption of ozone-depleting substances?
4What is the main environmental concern with HFC refrigerants?
5What is the Global Warming Potential (GWP) of R-134a compared to carbon dioxide (CO2)?
6Which of the following refrigerants has the highest ozone depletion potential (ODP)?
7Under the Kigali Amendment to the Montreal Protocol, what action are developed countries required to take regarding HFCs?
8What is the purpose of the stratospheric ozone layer?
9Which of the following is considered a "natural refrigerant" with zero ozone depletion potential and very low global warming potential?
10What is the relationship between chlorine content in a refrigerant and its ozone depletion potential?
About the EPA 608 Exam
EPA Section 608 certification is required for HVAC technicians who maintain, service, repair, or dispose of appliances containing refrigerants. The exam covers five sections: Core (environmental impacts, regulations, safety), Type I (small appliances), Type II (high-pressure systems), Type III (low-pressure systems), and Universal (all types combined).
Questions
100 scored questions
Time Limit
3 hours (Universal), 1.5 hours per section
Passing Score
70% per section (84% for open-book Type I)
Exam Fee
$75–$150 (EPA / Mainstream Engineering / ESCO Group)
EPA 608 Exam Content Outline
Core
Environmental impacts of CFCs/HCFCs/HFCs, ozone depletion, global warming potential, Clean Air Act, Montreal Protocol, refrigerant types, safety procedures, disposal requirements, record keeping
Type I - Small Appliances
Systems with <5 lbs refrigerant (refrigerators, freezers, window ACs), recovery techniques, system-dependent vs self-contained equipment, DOT-approved containers, mailing requirements
Type II - High Pressure
R-22, R-410A, R-404A systems, recovery requirements, leak detection and repair, evacuation levels (10" Hg, 15" Hg), leak rate thresholds, chronically leaking appliances
Type III - Low Pressure
R-11, R-123 chillers, recovery requirements, evacuation levels (25" Hg), water heating during recovery, centrifugal compressors, leak repair requirements
How to Pass the EPA 608 Exam
What You Need to Know
- Passing score: 70% per section (84% for open-book Type I)
- Exam length: 100 questions
- Time limit: 3 hours (Universal), 1.5 hours per section
- Exam fee: $75–$150
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
EPA 608 Study Tips from Top Performers
Frequently Asked Questions
What is the passing score for EPA 608 certification?
You need 70% to pass each section (18/25 questions correct). Type I is the exception — because it's open-book, you need 84% (21/25 correct). The Core section is required for all certification types. You must pass Core plus at least one type (I, II, or III) to be certified.
Does EPA 608 certification expire?
No, EPA Section 608 certification never expires. Once you pass the exam, you are certified for life. However, the industry and regulations do change, so many technicians choose to retake training periodically to stay current with new refrigerants and equipment.
What is the difference between Type I, II, III, and Universal certification?
Type I certifies you for small appliances with <5 lbs refrigerant (refrigerators, freezers, window ACs). Type II is for high-pressure systems (R-22, R-410A). Type III is for low-pressure systems (chillers using R-11, R-123). Universal certification requires passing all sections (Core + Type I + Type II + Type III) and allows you to work on any appliance.
What are the evacuation requirements for different system types?
Evacuation requirements vary by system: 0" Hg for very high-pressure systems, 10" Hg for high-pressure systems <200 lbs charge, 15" Hg for high-pressure systems >200 lbs charge, and 25" Hg for low-pressure systems. These are measured at the system service valves at the end of recovery.
What is a chronically leaking appliance?
A chronically leaking appliance is one that leaks 125% or more of its full charge in a 12-month period. When this is discovered, the owner has 30 days to repair the leak or develop a retrofit/disposal plan, and 120 days to complete the retrofit or disposal.
What recovery equipment can be used on small appliances?
Small appliances can use either system-dependent recovery equipment (80% recovery efficiency required) or self-contained recovery equipment (90% recovery efficiency required). System-dependent equipment cannot be used on appliances containing more than 5 lbs of refrigerant.
Can I take the Type I exam online?
Yes, the Type I certification exam can be taken online and is open-book. This is unique to Type I — Type II, Type III, and Core must be taken in-person at a proctored testing center. The open-book format is why Type I requires a higher passing score of 84%.