How to get EPA 608 certified

No renewal, no formal training requirement, and no EPA-run exam. The parts people get wrong are which type they need, who is actually exempt, and where the test comes from. Everything below is sourced to the regulation or to EPA directly.

The short version

1. Work out which type you need from the equipment you will touch, and from what you do to it. Type I, II, III, or Universal for all three.
2. Pick an EPA-approved certifying organisation. EPA does not run the exam itself, and only a test from an approved program counts.
3. Study. There is no required course. Most people study the material and sit the test.
4. Pass with 70 percent of the certification test. A Type I, II or III test is 50 questions, so that is 35 right. Universal is 100 questions, so that is 70.
5. Keep the card. It does not expire.

Do you actually need it?

The regulation defines a "technician" by what the work risks, not by job title. It covers anyone who, servicing or repairing an appliance, could reasonably be expected to break into the refrigerant circuit and release refrigerant. The rule spells out what that means:

"Activities reasonably expected to violate the integrity of the refrigerant circuit include but are not limited to: Attaching or detaching hoses and gauges to and from the appliance; adding or removing refrigerant; adding or removing components; and cutting the refrigerant line."

And it is equally specific about what does not count:

"Activities such as painting the appliance, rewiring an external electrical circuit, replacing insulation on a length of pipe, or tightening nuts and bolts are not reasonably expected to violate the integrity of the refrigerant circuit."

So gauges on a system is certified work. Tightening a bolt is not. The definition explicitly includes "installers, contractor employees, in-house service personnel, and owners and/or operators of appliances", so running the company does not exempt you.

The apprentice exemption is narrower than it sounds. The rule says "Apprentices are exempt from the requirement in paragraph (a)(1) of this section provided the apprentice is closely and continually supervised by a certified technician." But "apprentice" is a defined term, not a synonym for trainee or new hire:

"Apprentice means any person who is currently registered as an apprentice in maintenance, service, repair, or disposal of appliances with the U.S. Department of Labor’s Office of Apprenticeship (or a State Apprenticeship Council recognized by the Office of Apprenticeship). A person may only be an apprentice for two years from the date of first registering with that office."

So it is not a general "trainee" or "new hire" exemption. It requires actual registration with the Department of Labor Office of Apprenticeship or a recognised State Apprenticeship Council, it runs out two years after that first registration, and the close and continual supervision is an additional condition on top. If you are an unregistered new hire being shown the ropes, this exemption does not cover you, whatever your job title says.

Three things that can mean you do not need it

Most guides stop at "if you touch refrigerant you need a card". The regulation is more specific than that, and each of these can flip the answer:

Which type

This is where most of the confusion lives. It is decided by what the equipment is and what is in it, not by how big the job looks. Type I is factory-sealed small appliances with five pounds or less. Type III is low-pressure equipment, essentially centrifugal chillers. Type II is everything in between, and it covers medium, high and very high pressure, which is more than its "high-pressure" nickname suggests.

Use the type chooser if you want it worked out from the equipment you actually service.

Car air conditioning is not Section 608. Servicing a motor vehicle air conditioner for consideration requires Section 609 certification, and a 608 card does not substitute. The reverse is not quite symmetrical: a Section 609 certification does let you service an MVAC-like appliance, the open-drive systems on off-road and agricultural equipment, which the rule says may be handled by "either be certified as Type II technicians or be certified in accordance with 40 CFR part 82, subpart B". It still does not authorise ordinary stationary Type I, II or III work.

Where the exam comes from

EPA approves outside organisations to administer the test. There are currently 87 approved programs, 75 of them open to the general public, and 15 offer remote or online testing so you may not have to travel at all. The full list is here, filterable by state and format.

One catch worth knowing before you book: EPA requires the core test to be proctored if you want Universal certification. An open-book, take-at-home core will not get you there.

What is on it, and what you need to score

Every certification includes the Core section, which is the science and the regulations. Then you add the section for your type. Appendix D fixes the counts: 25 Core questions plus 25 type-specific questions for Type I, II or III, and 25 Core plus 75 for Universal, which is why Universal is a 100-question exam. You do not have to sit it as one paper: Universal can also be earned by combining passing Type I, II and III results. A mail-in Type I cannot count towards it, because Universal requires a proctored core.

The passing score is 70 percent of the certification test. On a 50-question Type I, II or III test that is 35 correct; on the 100-question Universal test it is 70. The mail-in Type I format is held to a higher bar, 84 percent, which is 42 of 50, because it is open book.

Most study sites quote 72 percent instead. That is 18 out of a 25-question section, which is what 70 percent rounds up to at that size. It is reasonable arithmetic, but note what the regulation actually sets: one score for the test. The full explanation, quoting Appendix D, is here.

Does it expire?

No. EPA states plainly that Section 608 technician certification credentials do not expire, and there is no renewal or continuing-education requirement. The regulation does reserve a right to change that: "The Administrator reserves the right to specify a requirement for technician recertification at some future date, if necessary, by placing a notice in the Federal Register." Nothing to do today, but that is the actual legal position rather than a flat "certified for life".

If you lose the card

Certifying organisations issue the cards and hold the records, so a replacement comes from the organisation that tested you, not from EPA. If you cannot remember which one it was, EPA publishes guidance on replacing a lost card.

How to prepare

There is no mandated course, so preparation is on you. Our free 100-question simulation mirrors the real format and scores each section separately, which is the useful part: it shows you which section would have failed you rather than one blended number. There are also per-section drills if you want to work one area at a time, and every question carries an explanation and a reference into the published exam outline.

Sources

Who counts as a technician, and the equipment definitions: 40 CFR 82.152. Certification types and the recertification reservation: 40 CFR 82.161. Question counts and passing scores: 40 CFR Part 82, Subpart F, Appendix D. Proctoring requirement, non-expiry and approved programs: EPA. All verified against the live text on 2026-08-15. HVAC Exam Lab is an independent study resource. It is not affiliated with, endorsed by, or approved by the U.S. Environmental Protection Agency or any EPA-approved certifying organization. All practice questions are original and written against the exam blueprint published in federal regulation (40 CFR Part 82, Subpart F, Appendix D). Section 608 certification exams are administered only by EPA-approved certifying organizations.