Core
Review ozone depletion, refrigerant safety, recovery rules, shipping, disposal, and EPA regulations.
608 Study Buddy
EPA Section 608
608 Study Buddy
Practice exams, drills, and missed-question review
Start a free diagnostic 20 questions across all four sections
386 original questions
No signup
Progress stays on your device
New here?
Find the weak spot before you grind.
Take one short diagnostic, review the section it flags, then build up to a full practice exam.
- 1Diagnostic
- 2Review weak section
- 3Section practice
- 4Full exam
Focused practice
Know what you are training for
Universal Practice TestCore + Types I, II, and III
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Core Practice TestRules, recovery, safety, and fundamentals
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Type I Practice TestSmall appliances and the 80/90 rule
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Type II Practice TestHigh-pressure recovery and service
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Type III Practice TestLow-pressure chillers and vacuum logic
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Want the reading first? Browse the complete study-guide hub or keep the recovery-level reference handy.
All practice modes
Free EPA 608 Practice Test and Study Game
608 Study Buddy helps HVAC students and technicians practice Core, Type I, Type II, and Type III exam questions. Use practice exams for test-style scoring, study mode for section review, quick drills for short sessions, and missed-question review to focus on the topics that need more work.
386 questionsOriginal practice questions across Core and Types I, II, and III.
Every answer explainedPlain-language reasoning instead of answer letters alone.
Source-aware studyRelated guides and official EPA references for rules that can change.
How to Use 608 Study Buddy
If you are new to Section 608, start with Core study mode before taking a full exam. Use Quick Drill when you only have a few minutes, then use Review Missed to repeat the questions you got wrong. When your missed list gets smaller, take a practice exam to check whether you can hold the information across a longer session.
Choosing a Section
Core applies to everyone. Type I focuses on small appliances, Type II focuses on high-pressure appliances, and Type III focuses on low-pressure appliances. Universal practice combines Core with all three type sections, which makes it the best option once you have reviewed each section separately.
Type I
Practice small appliance service topics including recovery, evacuation, and sealed-system repair basics.
Type II
Study high-pressure appliances, leak repair, recovery levels, charging, and service procedures.
Type III
Work on low-pressure chiller topics including evacuation, leak testing, recovery, and purge units.
Study Tips That Usually Help
Do not only memorize answer letters. Read why each correct answer fits the situation, especially for recovery, evacuation, leak repair, and cylinder handling questions. Section 608 questions often change the correct action based on appliance type, refrigerant state, pressure, or whether a compressor is operating.
EPA 608 Guides and Articles
Free written guides to go alongside your practice:
- EPA 608 Sample Questions With Explanations — twelve worked examples you can read without starting the app.
- EPA 608 Exam Overview — how Core, Type I, II, III, and Universal certification work.
- How to Pass the EPA 608 Exam — a two-week study plan and test-taking strategy.
- Core Study Guide — ozone rules, venting, recovery, recycling, and reclaiming.
- Type I Study Guide — small appliances and the 80/90 percent recovery rule.
- Type II Study Guide — high-pressure appliances, evacuation, and charging.
- Type III Study Guide — low-pressure chillers and purge units.
- The Section 608 Regulation Explained — 40 CFR Part 82, Subpart F, section by section.
- The R-22 Phaseout Explained — why R-22 is gone and what replaced it.
- The AIM Act and HFC Phasedown — A2L refrigerants and the rules shaping the trade now.
- Refrigerant Leak Repair Requirements — thresholds, timelines, and the 2026 changes.
- Official EPA Resources — links to the EPA and the regulation itself.
Not affiliated with the EPA. For study practice only.