Part of the expanding PassProfessor catalog: PassProfessor is building an EPA Section 608 practice program mapped section-by-section to the test topics the U.S. Environmental Protection Agency (EPA) publishes — Core, Type I, Type II, and Type III. Join the notify list and we will email you when enrollment opens.
This program is part of the expanding PassProfessor catalog — join the notify list and we’ll email you when enrollment opens.
EPA Section 608 Technician Certification is the federal credential required for technicians who maintain, service, repair, or dispose of equipment that could release refrigerants into the atmosphere, under EPA regulations at 40 CFR Part 82, Subpart F, issued under Section 608 of the Clean Air Act. You earn it by passing an EPA-approved test administered by an EPA-approved certifying organization — EPA itself does not administer the test. Each certification test combines a 25-question Core section with a 25-question section for the equipment type you will work on, and Universal certification — all three types — is a 100-question test. The passing score on the closed-book test is 70 percent, and Section 608 credentials do not expire. PassProfessor’s EPA 608 program, now in development, will prepare you against the same Core and per-type topics EPA publishes, so the time you spend practicing lines up with the test you will actually sit. Our full breakdown of the real certification is in the EPA Section 608 exam guide.
What the program will cover
Core plus every type, at their real structure. The program is being built directly on EPA’s published Section 608 test topics. Core is required for every certification, so it gets full coverage — and each type section is drilled on its own, because the rule grades the sections toward the certification you earn: pass Core and the Type II section and you hold Type II, whatever your Type III score would have been. The coverage table below shows the blueprint the program is built to.
The numbers the exam runs on. Section 608 is a rulebook exam as much as a trade exam: evacuation levels that change with equipment age (before or after November 15, 1993) and appliance size (under or over 200 pounds), allowable leak rates, the 80 percent cylinder-fill limit, the sales restriction, and the venting prohibitions. The program is being designed to drill those concrete figures in context — attached to the appliance and situation they govern — because that is how the test asks about them.
Recovery, leak, and safety judgment, not just definitions. The per-type sections test procedure: how you detect a leak in a high-pressure system versus a low-pressure chiller, how you speed recovery without contaminating refrigerant, when a system-dependent recovery device may not be used, and why a hermetic compressor must never be energized under a vacuum. Practice will be built around that kind of applied question, because recognizing a term and using it on a system are different skills.
Separate preparation for separate certifications. A technician who only services small appliances needs Type I; a chiller technician needs Type III; most working HVACR technicians aim for Universal. Practice results will break down by section — Core, Type I, Type II, Type III — so a weak section shows up in your practice data while there is still time to fix it, not for the first time on a score report.
Built for a credential that never expires — and is required now. Section 608 certification is not a renewal treadmill: credentials do not expire. But it is a legal gate from day one — work that could violate the integrity of a refrigerant circuit requires certification, with only a narrow, closely supervised apprentice exception. The program is being built for technicians who need to pass once, pass correctly, and get to work.
The real certification at a glance
Current as of October 2026, per EPA’s Section 608 technician certification pages (epa.gov/section608) and the standards for certifying programs at Appendix D to Subpart F of 40 CFR Part 82. Full detail — who must be certified, the test topics section by section, fees, retakes, and test day — is in our EPA Section 608 exam guide.
| EPA Section 608 Technician Certification | |
|---|---|
| Legal basis | Section 608 of the Clean Air Act; EPA regulations at 40 CFR Part 82, Subpart F |
| Who must hold it | Technicians who maintain, service, repair, or dispose of equipment that could release refrigerants into the atmosphere |
| Administered by | EPA-approved certifying organizations — EPA does not administer the test itself |
| Test structure | 25 questions from the Core group plus 25 questions from each relevant type group |
| Type I test | 50 questions (Core + Type I) |
| Type II test | 50 questions (Core + Type II) |
| Type III test | 50 questions (Core + Type III) |
| Universal test | 100 questions (Core + Type I + Type II + Type III) |
| Passing score | 70% on the closed-book test; 84% on a mail-in Type I test |
| Test conditions | Closed-book, proctored, in a secure environment for Type II, Type III, and Universal; Type I may be offered on-site or, by some programs, in a mail-in format |
| Exam fee | Set by each EPA-approved certifying organization — fees vary; EPA publishes no single national fee |
| Credential validity | Does not expire |
- There is no single “EPA exam day.” EPA approves certifying organizations — trade schools, industry associations, and testing companies on EPA’s published list — and each organization assembles its tests from the EPA test bank, schedules its own sessions, and charges its own reasonable fee for administering the test. Where and when you test, and what you pay, depend on the organization you choose.
- Universal can be earned in pieces. Per EPA’s rule, Universal tests may be taken all at once, or by combining passing scores on separate Type I, Type II, and Type III tests. One condition matters if you build up in stages: a mail-in Type I test cannot be used toward Universal certification, and a Core test taken as an open-book exam cannot be used to get Universal — the Core test must be taken as a proctored exam to attain Universal.
- 70 percent is the rule’s figure. Appendix D to Subpart F sets the passing score for the closed-book Type I, Type II, Type III, and Universal test at 70 percent, and the mail-in Type I passing score at 84 percent. Study to clear the line in each section you sit — Core plus the type sections for the certification you want — not to average across them.
How the practice maps to the real test
The program is being built section-by-section on the test topics EPA publishes for each Section 608 certification test — the same topic lists the certifying organizations’ tests are built from.
| Test section (per EPA’s published test topics) | What the program will drill |
|---|---|
| Core (required for every certification) | Environmental impacts — ozone destruction by chlorine, CFC / HCFC / HFC identification, ozone-depletion potential; the Clean Air Act and Montreal Protocol — phaseout dates, venting prohibitions at servicing and disposal, the prohibition on venting substitute refrigerants; Section 608 regulations — high- and low-pressure refrigerant definitions, recovery and recycling equipment, the AHRI Standard 700-2016 standard for reclaimed refrigerant, the sales restriction; substitute refrigerants and oils, including blend fractionation; refrigeration fundamentals and gauges; the three R’s — recover, recycle, reclaim; recovery techniques; dehydration evacuation; safety — exposure risks, protective equipment, recovery cylinders and the 80 percent fill limit, nitrogen for leak detection; shipping and cylinder labeling |
| Type I — Small appliances | The definition of a small appliance; recovery requirements with and without a working compressor, for recovery equipment manufactured before and after November 15, 1993; recovery techniques for small appliances, including system-dependent (passive) recovery and access-valve requirements; refrigerant identification by pressure and temperature; safety, including decomposition products of refrigerants at high temperatures |
| Type II — High- or very high-pressure appliances (except small appliances and motor vehicle air conditioners) | Leak detection — signs of leakage in high-pressure systems and the order of preference for leak test gases; leak repair requirements — allowable leak rates, recordkeeping, and repair-timeframe extensions; recovery techniques and recovery requirements — disposal, major versus non-major repairs, leaky versus non-leaky appliances, appliances under versus over 200 pounds, equipment built before versus after November 15, 1993, and the prohibition on system-dependent recovery equipment for systems containing more than 15 pounds of refrigerant; refrigeration — refrigerant identification and pressure-temperature relationships; safety — never energizing hermetic compressors under vacuum, and equipment-room requirements under ASHRAE Standard 15 |
| Type III — Low-pressure appliances | Leak detection — pressurization methods for low-pressure systems (hot water or a built-in heating/pressurization device such as Prevac, then nitrogen), signs of leakage into a low-pressure system, and maximum leak test pressure for low-pressure centrifugal chillers; leak repair requirements and reporting for chronically leaking appliances; recovery techniques, including heating oil to 130°F before removing it; recharging techniques for centrifugal systems; recovery requirements — disposal, major versus non-major repairs, and allowable pressurization methods for non-major repairs; refrigeration — the purge unit and pressure-temperature relationships of low-pressure refrigerants; safety — ASHRAE Standard 15 equipment-room requirements, including the refrigerant sensor for R-123 |
| Universal | All of the above — Core plus Types I, II, and III, taken all at once (100 questions) or built up from separate passing type tests under closed-book, proctored conditions |
How to use it
- Join the notify list today. While the program is in development, start with the free official material: read EPA’s Section 608 technician certification requirements and its published test topics for Core and for your type — everything testable is drawn from those topics.
- Decide which certification you actually need. Match the type to the equipment: small appliances (Type I), high- or very high-pressure appliances (Type II), low-pressure appliances (Type III), or all of them (Universal). If your work could cross types, plan for Universal from the start — the Core and Type I conditions for Universal are stricter than the mail-in Type I route.
- When the program opens, drill Core first. Core is half of every single-type test and a quarter of the Universal test, and its material — venting prohibitions, the sales restriction, recovery rules, safety — is the legal foundation the type sections assume.
- Drill your type sections by topic. Work leak detection, recovery requirements, recovery techniques, refrigeration, and safety inside your type until the misses stop repeating — especially the dated and sized thresholds (November 15, 1993 equipment; 200-pound appliances; 15-pound systems) the test returns to.
- Choose an EPA-approved certifying organization and schedule when your section-by-section practice sits comfortably above the 70 percent line in every section you will sit. EPA publishes the list of approved programs; each sets its own schedule and fee.
Frequently asked questions
What is EPA Section 608 certification? It is the federal technician certification required under Section 608 of the Clean Air Act and EPA’s regulations at 40 CFR Part 82, Subpart F. Technicians who maintain, service, repair, or dispose of equipment that could release refrigerants into the atmosphere must be certified, at the type level matching the equipment they work on.
Who needs Section 608 certification? Anyone whose work could reasonably be expected to violate the integrity of a refrigerant circuit. EPA defines a technician to include a person who attaches or detaches hoses and gauges to measure pressure in an appliance, adds refrigerant to or removes refrigerant from an appliance, or performs any other activity that violates the integrity of an MVAC-like appliance or a small appliance (other than disposal). Certification is also required to dispose of appliances, with exceptions EPA lists for small appliances, motor vehicle air conditioners, and MVAC-like appliances. Apprentices are exempt only while closely and continually supervised by a certified technician.
What are the four types of Section 608 certification? Per EPA: Type I, for servicing small appliances; Type II, for servicing or disposing of high- or very high-pressure appliances, except small appliances and MVACs; Type III, for servicing or disposing of low-pressure appliances; and Universal, for servicing all types of equipment — earned by passing Core plus all three type sections.
How many questions are on the Section 608 test? Each test section has 25 questions, drawn from the EPA test bank by the certifying program: 25 Core questions plus 25 questions from each relevant type group. A single-type test (Core + one type) is 50 questions; the Universal test is 100 questions. Universal may be taken all at once or built up by combining passing scores on separate Type I, Type II, and Type III tests.
What score do I need to pass the Section 608 test? 70 percent on the closed-book test, per Appendix D to Subpart F of 40 CFR Part 82 — that standard covers the closed-book Type I, Type II, Type III, and Universal tests. A Type I test taken in the mail-in format has a higher passing score: 84 percent.
Who gives the Section 608 test? EPA-approved certifying organizations — not EPA itself. EPA states plainly that it does not administer the tests and does not issue test results or certification cards; approved organizations and their proctors do. EPA publishes the list of approved Section 608 technician certification programs on its website.
How much does the Section 608 exam cost? There is no single national fee. EPA’s rule allows certifying programs to charge reasonable fees for administering the tests, and each approved organization sets its own. Check the fee with the organization you choose before you register, and confirm what the fee covers.
Does Section 608 certification expire? No. Per EPA, Section 608 Technician Certification credentials do not expire. You keep a copy of your certification at your place of business, and keep it until three years after you are no longer operating as a technician.
Can I take the Type I test by mail or open-book? Some Type I programs offer a mail-in format, and EPA’s requirements draw the line clearly: a Core test taken as an open-book exam cannot be used to get Universal certification — the Core test must be taken as a proctored exam to attain Universal — and a mail-in Type I test cannot be used toward Universal certification either. Type II, Type III, and Universal tests are closed-book, proctored tests administered in a secure environment. If Universal is your goal, test under proctored, closed-book conditions from the start.
Is there a separate EPA certification for R-410A? No. Per EPA, Section 608 certification is based on the type of appliance, regardless of refrigerant type, and EPA has no certification exclusively focused on R-410A. Trade-school classes and certificates for R-410A specifically are not equivalent to Section 608 certification.
Does Section 608 cover motor vehicle air conditioning? No — the Section 608 types are built around stationary equipment. EPA’s Type II definition expressly excepts small appliances and MVACs (motor vehicle air conditioners), and EPA’s Core test topics identify the equipment covered by the rule as all air-conditioning and refrigeration equipment containing CFCs or HCFCs except motor vehicle air conditioners.
When will the PassProfessor EPA 608 program be available? It is in development now. Join the notify list on this page and we will email you when it opens. No enrollment is being taken yet, and we are not publishing a launch date we cannot keep.
Disclaimer
PassProfessor is an independent exam-preparation provider and is not affiliated with, sponsored by, or endorsed by the U.S. Environmental Protection Agency or any EPA-approved certifying organization. This program is exam preparation only and provides no certification; Section 608 Technician Certification is earned solely by passing an EPA-approved test administered by an EPA-approved certifying organization. EPA does not review or approve training preparatory programs or materials. Certification details on this page are general information current as of October 2026 — EPA’s official publications and regulations govern if anything here differs from them.