The EPA 608 practice test on this site is a free, exam-format question bank scored 25 questions at a time, the way ESCO and Mainstream administer the real Section 608 exam. Every miss shows the rule behind it, and a free account adds weak spot drills and an AI tutor.
A free EPA 608 practice test is open for each section, 50 questions per section plus a 100 question Universal exam, with no signup. Pick the section that matches the equipment you service. Each section is scored on its own at 18 of 25, so a strong Core will not carry a failed Type. Every level is examined the same way by ESCO Institute, Mainstream Engineering and HVAC Excellence.
The EPA 608 exam covers four topic groups: refrigerants and their classes, federal regulations, recovery and leak repair, and safety and equipment standards. The practice tests on this site follow the same outline, 300 questions with no signup and all 604 with a free account, with an answer explanation on every question.
Identify CFCs, HCFCs, HFCs, and the newer HFOs, plus common refrigerants like R-22, R-410A, R-134a, R-404A, and R-717 (ammonia), their oils, and cylinder color codes. Core tests every refrigerant family, from the CFC and HCFC legacy to the low-GWP A2L refrigerants arriving under the AIM Act.
Section 608 of the Clean Air Act, the Montreal Protocol, ozone depletion (ODP) and global warming potential (GWP), and the 2026 AIM Act HFC phasedown. Know the venting ban, de minimis releases, and civil penalties.
Refrigerant recovery vs. recycling, required evacuation and deep vacuum levels, recovery cylinder handling, and the tiered leak rate thresholds (10% / 20% / 30%) that trigger mandatory repair, retrofit, or retirement. We reverified those thresholds against the current eCFR, the 35% figure on some older sites is the pre-2019 rule.
PPE and refrigerant safety, AHRI 700 and 740 equipment standards, micron gauges and manifold sets, and per section coverage for Core, Type 1, Type 2, and Type 3.
Want to see the reasoning? Try the EPA 608 practice test with answers, or print the free EPA 608 cheat sheet (PDF-ready) for exam day.
Free covers every practice test on this site and all 604 questions with an account. Pro is a one-time $14.99 that unlocks the AI Tutor at 1,000 questions a month, weak spot drills, and analytics. The real Section 608 exam is priced by certifying organization: Mainstream Engineering $26.95 per attempt ($7.95 per retest), ESCO Institute $60 to $85 for Universal online, HVAC Excellence $80 to $90 for Universal in person.
🔒 One time payment · Lifetime access · No subscription
Beyond practice tests, these tools identify exactly what you don't know and fix it before exam day does. The mix of Free and Pro features below reflects the wrong answer patterns we see across the question bank, drawn from more than 1,400 section targeted practice sessions technicians have logged in the app as of August 2026.
AI Tutor: the rule behind each answer
The AI Tutor explains any Section 608 concept in plain trade language, 10 questions a month free and 1,000 a month on Pro.
The EPA 608 practice test on this site uses the real exam format: 25 questions per section, four option multiple choice, and the 72% passing threshold of 18 of 25, plus explanations, analytics, and unlimited retakes. Everything else about the EPA 608 test, from exam rules to what happens if you fail a section, is in the test guide.
Section 608 is the EPA certification for anyone who services, maintains, or disposes of equipment containing refrigerants, and every question in this bank is written for that exam. All 604 verified questions are checked against 40 CFR Part 82 Subpart F and current AIM Act requirements. We built the bank from two sources, ESCO and SkillCat study materials, then hand checked every question one by one.
If you searched for a general EPA practice test for HVAC work, this is that test: Section 608 is the EPA certification for anyone who services, maintains, or disposes of equipment containing refrigerants, and every question in this practice bank is written for that exam.
| Feature | This Platform (Pro) | Real EPA 608 Exam |
|---|---|---|
| Question Format | ✓ 4-option multiple choice | ✓ 4-option multiple choice |
| Question Count | ✓ Core: 25 · Types: 25 · Universal: 100 | ✓ Identical structure |
| Passing Score | ✓ 72% per section (18/25) | ✓ 72% per section |
| 2026 AIM Act Content | ✓ Fully updated | ✓ Current |
| Cost Per Attempt | ✓ Unlimited, one time $14.99 Pro | ✗ $26.95 to $90 per attempt, by organization |
| Instant Scoring | ✓ Immediate with full explanations | ✗ Pass/fail only |
| Answer Explanations | ✓ Every question explained | ✗ Not provided |
| Progress Analytics | ✓ Full history + weak spot radar | ✗ Score report only |
| AI Tutor Support | ✓ 1,000 questions/month with Pro | ✗ None |
| Official Certification | ✗ Practice only | ✓ EPA card mailed |
Readiness signal: Consistently scoring 85%+ across 3+ practice sessions means you're ready to register with an EPA-approved testing organization.
Three things do the heavy lifting: exam accurate questions, instant explanations, and weak spot tracking, free to start.
Every question mirrors the real exam: 25 questions per section, the same 72% passing threshold, and the same topic mix as the official ESCO outlines.
Miss a question and the explanation appears immediately, the fastest way to turn a wrong answer into a point you keep on exam day.
Your weak spot chart shows which section is costing you points, so you drill what you actually miss instead of rereading what you already know.
Four answers on what is free, how long to study, the one-time Pro payment, and accounts.
Pass EPA 608 on Your First Attempt
Built to get HVAC technicians through Section 608 the first time. Start free in 3 seconds. Upgrade when you're ready.
Free Section 608 refrigerant certification practice tests. Question bank sourced from ESCO’s official study materials. Updated for the AIM Act's 2026 requirements. Built for HVAC technicians who need to pass the first time.