EPA 608 Study Guide 2026-2027
Core, Type I, II, III, and Universal certification prep for HVAC technicians, current through the 2026 rule changes.
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About this book
The refrigerant world changed. Your study guide should too.
This complete preparation system covers everything the EPA Section 608 exam tests, taught in plain language and fully current through the 2026 rule changes. Whether you need Type I for appliance work, Type II for residential and commercial HVAC, Type III for chillers, or the Universal card, every section of the exam is here, explained and then drilled.
What's inside
- Core, Type I, Type II, and Type III sections taught chapter by chapter, with every evacuation level, leak threshold, date, and deadline the exam rewards
- 130 chapter review questions, each with a full answer explanation that teaches the reasoning
- Two complete 100-question practice exam sets covering all four sections, with detailed answer keys
- The modern material other guides skip: A2L refrigerants like R-454B and R-32, the HFC phasedown under the AIM Act, the 2025 sales restriction, and the leak repair rules that took effect in January 2026
- Rapid recall drills, worked leak-rate math, and five-evening and three-week study plans
- A quick-reference appendix with every table to review the morning of your exam
Who it's for
- HVAC students and apprentices taking the 608 exam for the first time
- Working technicians upgrading to Universal certification
- Appliance and refrigeration techs who need Type I or Type III
Format details
EPA 608 Study Guide is a digital PDF (181-page study system with two full practice exams, PDF). It is formatted for standard 8.5 x 11 letter paper, prints cleanly at home or at a print shop, and reads well on phones, tablets, and computers. Purchase is an instant digital download through Etsy: no physical item ships, and the file stays available in your Etsy account.
Common questions
What score do I need to pass the EPA 608 exam?
You need 18 of 25 questions correct in each section you attempt. This guide prepares you to score far higher, and to keep the working knowledge long after test day.
Does this guide cover the new A2L refrigerants?
Yes. It covers A2L refrigerants such as R-454B and R-32, the HFC phasedown under the AIM Act, the 2025 sales restriction, and the leak repair rules that took effect in January 2026. Most older guides skip all of this.
Which certification types does the guide cover?
All of them: Core, Type I, Type II, Type III, and therefore Universal. Two full 100-question practice exam sets span all four sections.
Is this affiliated with the EPA?
No. All practice questions are original creations written for this guide. It is an independent resource, not affiliated with the EPA or any certifying organization.