EPA 608 Study Guides
Plain-English guides to the EPA Section 608 exam, written for techs who'd rather be on a job than in a classroom. Every guide is checked against the federal rules (40 CFR Part 82, Subpart F) and says where each number comes from.
EPA 608 Core Exam: Study Guide for 2026
What the Core section covers, from ozone depletion and the Clean Air Act to recovery, recycling, reclaim and safety, with practice questions.
Updated · Read the guide →
EPA 608 Type I vs Type II vs Type III: Which One Do You Need?
Small appliances, high-pressure or low-pressure systems: which EPA 608 certification covers the equipment you work on, and when to go Universal.
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How to Get EPA 608 Certified in 2026: Step by Step
Who needs Section 608 certification, which type to take, where to test in person or online, what to bring on exam day and what happens after you pass.
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EPA 608 Evacuation Levels: The Required Vacuum by Appliance
The required evacuation levels of 40 CFR 82.156 in one table: very high, high, medium and low-pressure appliances, small appliances, and the exceptions.
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AIM Act 2026: The HFC Leak Repair Rules for HVAC Techs
Since January 1, 2026, HFC systems with 15 lbs or more must be repaired past a leak threshold. Who is covered, the 10/20/30% rates and what is exempt.
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A2L Refrigerants and the R-410A Transition: A Tech’s Guide
Why new AC runs on R-454B and R-32, what A2L means, what the 2026 rule change did for R-410A installs, and how A2L service differs on the job.
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Free EPA 608 Practice Test
Check where you stand before you read: 10 Core practice questions, scored, with the explanation after every answer. No sign-up.
Takes about 5 minutes · Start the test →