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EPA Section 608 of the Clean Air Act requires all technicians who purchase or work with refrigerants in amounts greater than 2 pounds to be certified. Certification is administered by EPA-approved organizations and consists of a written exam covering four sections: Core, Type I, Type II, and Type III.
Without EPA 608 certification, you cannot legally purchase refrigerant in containers over 2 pounds. For any technician servicing air conditioners, heat pumps, refrigerators, or commercial refrigeration equipment -- certification is not optional.
You must pass the Core section PLUS at least one Type section (I, II, or III) to receive certification. Universal certification requires passing Core and all three Type sections.
| Section | Questions | Topics Covered | Who Needs It |
|---|---|---|---|
| Core | 25 | Refrigerant chemistry, ozone depletion, Montreal Protocol, Section 608 regulations, safety, recovery equipment | Everyone -- required for all applicants |
| Type I | 25 | Small appliances (hermetically sealed, 5 lbs or less): household refrigerators, window ACs, vending machines | Technicians who service small appliances |
| Type II | 25 | High-pressure equipment: R-22, R-410A, R-134a systems -- residential and commercial AC, heat pumps | Technicians who service residential/commercial HVAC |
| Type III | 25 | Low-pressure equipment: centrifugal chillers using R-11, R-113, R-123 | Technicians who service large commercial chillers |
You must answer at least 70% correctly on each section you attempt. A score of 70% means 18 out of 25 questions correct per section. The Core section and at least one Type section must both be passed in the same testing session.
Our HVAC Academy EPA 608 prep course is structured in 7 modules followed by 5 practice exams. We recommend the following study path:
Most technicians find that 8-10 hours of focused study is sufficient to pass all four sections if they have hands-on HVAC experience. Pure beginners typically need 15-20 hours of study time. Our practice exams use the same question style and difficulty as the actual EPA 608 exam.
EPA 608 exams are administered by EPA-approved organizations. The exam is proctored and typically costs $20-$40. Common certification bodies include:
EPA 608 certification does not expire once earned. However, working on specific types of equipment (such as motor vehicle air conditioning) requires separate EPA 609 certification.