How to get EPA 608 certified in 2026: the steps, in order

Checked on September 14, 2026, against the current eCFR text of 40 CFR 82.154, 82.161 and Appendix D to Subpart F of Part 82, and against EPA's Section 608 pages. Every figure below names its source; the sources are listed at the end.

The Section 608 certification has a fixed shape. The regulation says who needs it, which organizations may issue it, how the test is built and scored, and what happens after you pass. What varies is the wrapping: price, schedule, classroom or screen, English or Spanish. This page walks the fixed part in order, so you can compare programs on the parts that actually differ.

Step 1: confirm that you need it, and which type

You need the certification if you could reasonably be expected to break into the refrigerant circuit while maintaining, servicing, repairing or disposing of an appliance that contains a class I or class II refrigerant or a non-exempt substitute such as an HFC (§82.161(a)(1)). Since January 1, 2018, that has covered HFC systems, not only the old ozone-depleting ones (§82.161, opening paragraph).

There are four certifications. Type I covers small appliances, factory-sealed with five pounds of refrigerant or less. Type II covers medium-, high- and very high-pressure appliances other than small appliances and vehicle air conditioners. Type III covers low-pressure appliances. Universal covers all three (§82.161(a)(1)(i) to (iv); §82.152, "Small appliance"). Car air conditioning is a separate program under 40 CFR part 82, subpart B (§82.161(a)(1)(vi)).

Two things people often get wrong. Disposing of small appliances, car air conditioners and MVAC-like units needs no certification (§82.161(a)(1)(vii)). And you can work as an apprentice before you are certified, as long as a certified technician closely and continually supervises any work that could release refrigerant; the two of you share the responsibility (§82.161(a)(2)).

Step 2: choose a program from EPA's list

Only an EPA-approved certifying program may issue the certification, and EPA publishes the list (§82.161(b)(1); Appendix D, section a). The list is the one that counts; if a provider is not on it, its test is not a Section 608 test.

EPA's list page tells you a few things about each program: most Type I-only programs test on site, the ones that offer a mail-in Type I option are identified, some programs offer remote or online testing that does not require travel, some note Spanish availability, and programs marked with an asterisk test only their own employees. The same page states that EPA does not review or approve any training or preparatory programs or materials, so approval covers the test, not the course that comes with it (EPA, Certification Programs for Section 608 Technicians).

Fees are set by the program; the regulation only requires them to be reasonable (Appendix D, section a).

Step 3: study to the official outline

EPA writes the question bank and releases it only to approved programs. Every test draws at least 25 questions from the core group and at least 25 from each technical group for the certification you want, and the questions must cover the subject areas in Appendix D (§82.161(c)). The core group covers the environmental impact of CFCs, HCFCs and substitutes, laws and regulations, and the changing industry outlook; the type-specific group covers leak detection, recovery techniques, safety, shipping and disposal (Appendix D, section d). EPA publishes a more detailed topic list for each of the four sections (EPA, Test Topics, updated December 5, 2025). Study to that outline, whatever course or app you use.

Step 4: book the test and confirm the format

For Type II, Type III and Universal, the test is closed book and proctored in a secure environment. Only a program that certifies Type I alone may offer a mail-in format, and a mail-in Type I test cannot count toward Universal (Appendix D, section a). Bring photo identification; proctors must check it, and acceptable forms include a driver's license, government ID, passport or military ID (Appendix D, section b).

Ask about language and format before the test date. Programs are encouraged to offer the test in other languages or allow a translator, and any person can ask to take the test orally by writing to the program at least 30 days before the scheduled date, with the reason for the request (§82.161(b)(3)). After you finish, the program must hand you a paper or electronic note saying which program tested you, how to contact it, who the proctor was, and when to expect your score and card (Appendix D, section a).

Step 5: take the test

Each section is 25 questions. Universal is 100: 25 core plus 25 for each type, in one sitting or built from separate passes on Type I, Type II and Type III tests (Appendix D, section a). The passing score is 70 percent for the closed-book format, which on a 25-question section means 18 correct, and 84 percent for the mail-in Type I format, which means 21 of 25 (Appendix D, section e). The regulation sets no limit on attempts; retest rules and any retest fee are the program's.

Step 6: after you pass

The program must report your result and issue a standard wallet-sized card within 30 days of the test, or within 30 days of receiving a completed mail-in test. The card shows the program's name and EPA approval date, your name, the certification type, a unique number that is not your Social Security number, and a fixed sentence about the exam you passed (Appendix D, sections e and f). Keep a copy of the certificate at your place of business, and keep it until three years after you stop working as a technician (§82.161(a)(4)).

Your name will also appear on the program's online list of certified technicians, with your city at the time of the test, the types and the dates; the program must tell you and let you opt out (§82.161(b)(6)). The credential does not expire (EPA, Section 608 Technician Certification, updated March 23, 2026).

If you lose the card later, EPA cannot replace it. The path is the program that issued it, which must keep records; if that program has closed, documentation of your pass can go to one of the organizations EPA names for replacements; if you have no documentation and the program is gone, the only way back is to retake the test (EPA, Steps For Replacing a Lost Section 608 Technician Certification Card, updated March 19, 2026).

What the card actually unlocks

Three things. You may legally open refrigerant circuits on the appliances your type covers (§82.161(a)(1)). You may buy refrigerant: since January 1, 2018, ozone-depleting refrigerants and non-exempt substitutes may only be sold to a certified technician, to an employer of one, or to the other listed buyers (§82.154(c)(1)). And the same card is the one the AIM Act's refrigerant rules rely on: 40 CFR part 84 defines a certified technician as one certified under §82.161 (§84.102). There is no separate federal certification for the new A2L refrigerants; the rules that cover them reach you through this one.

Numbers to remember

• Four types: I small appliances (five pounds or less, factory sealed), II medium to very high pressure, III low pressure, Universal all three
• Only EPA-listed programs can certify; EPA approves the test, not the training
• At least 25 questions per section; Universal 100
• Pass mark: 70 percent closed book (18 of 25); 84 percent mail-in Type I (21 of 25)
• Closed book and proctored for Type II, III and Universal; photo ID required
• Oral test: ask in writing at least 30 days ahead, with a reason
• Results and card: within 30 days
• Keep a copy of your certificate at work, and for three years after you leave the trade
• No expiry; a lost card comes from the issuing program, not from EPA

If you want to study to the official outline with sourced explanations and mock exams in the real format, the EPA 608 Prep app was built for exactly that: EPA 608 Prep: HVAC Tests 2026.

This article is a study aid, not compliance advice. For the binding text, use the eCFR links above. StudyRig is an independent publisher and is not affiliated with or endorsed by the U.S. Environmental Protection Agency or any certification provider.