EPA 608 Practice Test 2026

Study for your EPA 608 certification exam – in English or Spanish.

Every HVAC and refrigeration technician in the U.S. needs Section 608 certification to work with refrigerants and to buy them. EPA 608 Prep helps you study every part of the test.

OFFICIAL SOURCES (U.S. government)
• EPA – Section 608: https://www.epa.gov/section608
• 40 CFR Part 82, Subpart F: https://www.ecfr.gov/current/title-40/chapter-I/subchapter-C/part-82/subpart-F
• 40 CFR Part 84 (AIM Act, HFC rules): https://www.ecfr.gov/current/title-40/chapter-I/subchapter-C/part-84
Every explanation shows the rule section it comes from, with a link.

■ ALL FOUR SECTIONS – 570+ QUESTIONS
• Core: ozone, the Clean Air Act, the 3 Rs, recovery, safety, shipping and the 2026 HFC leak rules
• Type I: small appliances
• Type II: medium-, high- and very high-pressure systems – evacuation levels, leak repair
• Type III: low-pressure chillers – purge units, rupture discs, recharging
• Universal: a 100-question exam with all four sections

■ LEARN WHY, NOT JUST WHAT
• A clear explanation and the source after every answer
• Practice by topic: rules, recovery, leaks, safety, shipping, refrigerants and more
• Key-facts sheets: the numbers you must know, on one page

■ SMART STUDY
• Smart review brings missed and due questions back at the right time
• Daily goal, study streak and an optional daily reminder
• Test-date countdown and exam history
• Bookmark hard questions

■ REAL MOCK EXAMS
• 25 questions per section, 70% (18 of 25) to pass – like test day
• Every topic covered in each exam, with a timer
• Challenge a coworker to the same exam and compare scores

■ ENGLISH Y ESPAÑOL
• Switch the language of every question with one tap

Free: 30 Core questions, 10 per type and 1 mock exam a day.
Upgrade once: the Core + one type pass, or Universal (everything + the 100-question exam). No subscription, no ads, no account.

EPA 608 Prep is an independent study app. It is not affiliated with or endorsed by the U.S. EPA or any certifying program. It does not certify you – you still need to pass a proctored test with an EPA-approved certifying organization.

Recent changes:
570+ questions, smart review, topic drills, bookmarks, key facts, test-date countdown and exam history. Share your score or challenge a coworker. New: Core + one type pass.