EPA 608 Universal certification
Universal is the certification for servicing all types of equipment. [EPA certification requirements] The regulation says persons who maintain, service, repair, or dispose of all the appliances described for Type I, Type II and Type III “must be certified as Universal technicians.” [40 CFR 82.161]
The test
“Tests for Universal technicians will include 100 questions (25 from Group 1 and 25 from each relevant technical Group).” [40 CFR 82 Subpart F, Appendix D] In the regulation’s test-content section: 25 questions from Group I and 75 from Group II, with 25 from each of the three sector-specific areas. [40 CFR 82 Subpart F, Appendix D]
The passing score for the closed-book Universal test is 70 percent. [40 CFR 82 Subpart F, Appendix D]
Two ways to get it
“Universal tests may be taken all at once, or by combining passing scores on separate Type I, Type II, and Type III tests.” [40 CFR 82 Subpart F, Appendix D]
- All at once: one closed-book, proctored test, administered in a secure environment. [40 CFR 82 Subpart F, Appendix D]
- In pieces: pass Type I, Type II and Type III separately and combine the passing scores. Ask your certifying organization how it handles combining scores. [40 CFR 82 Subpart F, Appendix D]
What does not count toward Universal
- “Mail-in format Type I tests cannot be used toward a Universal certification.” [40 CFR 82 Subpart F, Appendix D]
- “Core tests taken as an open book exam cannot be used to get your Universal Certification. The core test must be taken as a proctored exam in order to attain Universal Certification.” [EPA certification requirements]
Closed book
“The certification test for Type I (if taken as part of a Universal certification), Type II, Type III, and Universal technicians is a closed-book exam.” The proctors must ensure that applicants do not use any notes or training materials during testing. [40 CFR 82 Subpart F, Appendix D]
What the Universal test covers
The same areas as the other tests: Group I (environmental impact of CFCs, HCFCs, and substitute refrigerants; laws and regulations; changing industry outlook), plus the technical areas for each type. What’s on the test lists them, and the study guide has EPA’s topic list for Core, Type 1, Type 2 and Type 3.
Not covered here
Whether one sitting or several is cheaper, and how long a certifying organization takes to combine scores, depend on the organization. We did not find them in an EPA source, so we do not state them.
Practice all four sections on the hub.
Sources
- EPA, Section 608 Technician Certification Requirements (last updated July 15, 2026)
- eCFR, 40 CFR Part 82, Subpart F, Appendix D: Standards for Becoming a Certifying Program for Technicians
- eCFR, 40 CFR 82.161, Technician certification
Every fact on this page was checked against these sources on . noshu is not affiliated with the U.S. Environmental Protection Agency or any EPA-approved certifying organization, and this is an unofficial study aid: EPA’s Section 608 pages, the regulation and your certifying organization are the authority on the test. If something here is wrong, tell us at a@noshu.net.