Free EPA 608 practice test
Practice every section with the answer explained, or take a 25-question exam and see where you stand. No signup, and your scores and missed questions stay on your phone so you can drill your weak spots.
27 questions in this set. Passing on the real exam is 70% per section (18 of 25).
Study guides
EPA 608 Core study guide
Ozone, regulations, the 3 Rs, recovery, cylinders, safety and shipping. Required for every certification.
Type IEPA 608 Type I study guide
Small appliances made, charged and hermetically sealed at the factory with 5 lb or less of refrigerant.
Type IIEPA 608 Type II study guide
High-pressure and very high-pressure appliances: residential and commercial AC, heat pumps and most refrigeration.
Type IIIEPA 608 Type III study guide
Low-pressure appliances, mainly centrifugal chillers using refrigerants like R-123 and R-1233zd.
How the real exam works
- Four sections of 25 questions: Core plus Type I, II and/or III. Pass all four for Universal.
- 70% (18 of 25) passes each section. Sections are scored separately, so you can pass Core and Type II even if you miss Type III.
- The exam is given by an EPA-approved certifying organization, in person or online with a proctor.
- See our EPA 608 certification guide for what changed in 2026.
FAQ
How many questions are on the EPA 608 exam?
Each section (Core, Type I, Type II, Type III) has 25 multiple-choice questions. You need 70%, or 18 correct, to pass a section. Universal means passing all four.
Is this the official EPA test bank?
No. These are original practice questions written from EPA's Section 608 regulations and guidance. They cover the same facts the exam tests, and every answer comes with an explanation.
Does EPA 608 certification expire?
No. Section 608 certification doesn't expire.
What's new on the 2026 exam?
A revised question bank adds general questions on A2L and A3 refrigerants like R-32, R-454B and R-290. Exams from the old bank end January 1, 2027.
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Practice questions are written by HVAC Cheat Sheet from EPA's Section 608 rules (40 CFR Part 82, Subpart F) and the AIM Act leak rules (40 CFR Part 84). They are not the official test bank. Found an error? Tell us.