EPA Section 608 Technician Certification
EPA 608 certification prep that starts with questions
EPA 608 certification is the federal credential you need to service, repair or dispose of stationary refrigeration and air-conditioning equipment that could release refrigerant, and you earn it by passing a test given by an EPA-approved certifying program. Sight Glass is where you practice for that test: exam-style questions that explain every option, a timed mock, and a study guide organized by exam section.
- Sections
- Core, I, II, III
- Type test
- 50 Q
- Universal
- 100 Q
- Pass mark
- 70%
Pick a starting point
With a test date already booked, the timed mock shows the weak section fastest. Without one, a few rounds of the mixed practice test will find it for you.
- PracticePractice testMixed questions from all four sections.
- Timed mockTimed mockOne question at a time, a clock, a score by section.
- Study guideStudy guideEvery section, topic and concept, plus exam facts with sources.
- FlashcardsFlashcardsThe numbers, both sides in plain text.
- Study planStudy planFour, eight or twelve weeks, by section.
The rules behind the numbers above
EPA 608 test rules and where they are written
| Rule | What it says | Where it is written |
|---|---|---|
| Who needs it | Anyone who maintains, services, repairs or disposes of equipment that could release refrigerant. Apprentices are exempt while a certified technician closely and continually supervises them. | EPA certification requirements; 40 CFR 82.161(a) |
| Test length | Core plus one type section, 25 items each, for Type I, II or III; all four sections for Universal. | 40 CFR 82, Appendix D (a), (d) |
| Passing score | 70% on closed-book tests; 84% on a mail-in Type I test. | 40 CFR 82, Appendix D (e) |
| Book rules | Type II, Type III and Universal are closed-book and proctored. An open-book Type I pass can't count toward Universal. | 40 CFR 82, Appendix D (a); EPA certification requirements |
| Expiry | No expiry under current EPA rules; EPA could add recertification later through the Federal Register. | EPA certification requirements; 40 CFR 82.161(a)(5) |
| Wallet card | Issued by the program you test with. EPA doesn't issue cards. | EPA lost-card steps |
Rules: eCFR as of October 5, 2026. EPA pages: checked October 7, 2026.
Why each question explains its wrong options
In 608 practice, wrong options tend to borrow a real number from the neighboring rule: the 0 psig level for a non-major repair offered as a disposal evacuation level, or comfort cooling's 10% leak rate offered for commercial refrigeration, which is 20% for appliances holding 50 lb or more of ozone-depleting refrigerant (40 CFR 82.156 and 82.157, eCFR as of October 5, 2026). You learn to separate them by running into them, so every question on this site comes with a note on each option, the wrong ones included.
Each topic in the EPA 608 study guide covers one rule in a few screens and ends in a drill on that rule alone, and the EPA 608 flashcards carry the figures you'll want cold by test day.
Before you choose where to test
EPA approves the programs that give the test and lists 84 of them, some with remote or online-only testing and some in Spanish (EPA list of certification programs, checked October 7, 2026). There's no single fee: each program sets its own, which is why the cost of EPA 608 certification is a table of programs with dates, and how to get EPA 608 certified covers the steps from choosing a type to holding the card.
One date matters this year: ESCO Institute says exams drawn from EPA's old question bank can be given only through January 1, 2027 (ACHR News, September 19, 2026, checked October 7, 2026), and the new EPA 608 exam explains what that changes for you.
Everything on Sight Glass
Topics are grouped by exam section. The concept pages, one confusable idea each, sit inside their topics in the EPA 608 study guide.
Core
Type III
Exam facts
Getting certified