Group I / 25 questionsOn every test.
Core
Venting rules, the three Rs, the Clean Air Act and Montreal Protocol, substitutes, evacuation, safety and shipping.
Core section guideEPA Section 608 / Core, Type I, II, III, Universal
Pass the 608 by understanding it, not memorizing it.
Every number on the 608 has a reason behind it. Learn the reason and the answer stops being a guess. Original practice questions, a plain-English explanation for each one, and the rule it comes from.
No signup for the quiz. Your score stays on your device.
Readiness gauge
70%
Passing score on closed-book tests
Source: 40 CFR 82, Subpart F, Appendix D. Take the quiz and the needle shows your own score.
What the exam covers
Four sections. One rulebook behind all of them.
Every Type I, II and III test has 25 Core questions and 25 from its own technical group. Universal has 25 Core and 75 technical. Source: EPA Section 608, 40 CFR 82 Subpart F, Appendix D.
25 questionsSmall appliances
Type I
Factory-sealed units with 5 lb of refrigerant or less: recovery percentages, recovery techniques, safety.
Type I guide25 questionsHigh pressure
Type II
Medium-, high- and very high-pressure appliances: evacuation levels, leak detection and leak repair rules.
Type II guide25 questionsLow pressure
Type III
Low-pressure appliances: 25 mm Hg absolute, pressurizing before opening, leak repair and recharging.
Type III guide25 + 75 questionsAll equipment types
Universal
Core plus all three technical groups, in one sitting or by combining passing scores on separate tests.
Is Universal worth it?Scoring and formatRead this first
How the exam works
Who gives the test, the 70 percent passing score, closed-book rules, wallet cards, and why it never expires.
Exam structure and scoringHow a question looks
An answer, then the reason. Every time.
Each practice question tells you why the right answer is right, why the wrong ones are tempting, and where the rule lives. This one catches people because the category name sounds like the wrong type.
Try 12 more like itType II+10 pts
A walk-in cooler runs on R-134a. Under EPA's definitions, what kind of appliance is it, and which certification covers servicing it?
B. EPA defines a medium-pressure appliance as one using a refrigerant with a liquid phase saturation pressure between 45 and 170 psia at 104 °F, and lists R-134a as an example. Type II certification covers medium-, high- and very high-pressure appliances, except small appliances and motor vehicle systems. The trap is the name: "Type II, high pressure" includes medium pressure too.
See 40 CFR 82.152 (definitions) and 40 CFR 82.161 (certification types).
Free quiz
12 questions. 3 per section. Score by section.
Ten points per right answer, a streak counter, and a breakdown at the end so you know which section to study next. Written from scratch, checked against the official rule text.
Start the quiz- 03 Core
- 03 Type I
- 03 Type II
- 03 Type III
Recent articles
One topic at a time, with the source linked
How the EPA 608 Exam Is Structured and Scored
The EPA 608 exam from the rule itself: 25 Core questions on every test, 25 per technical type, 100 for Universal, a 70 percent passing score, and closed-book rules.
The 608 Core Section: What You Must Know
The Core section is on every 608 test. The ten topics EPA lists, the venting prohibition, the three Rs, the sales restriction and the records technicians keep.
Type I: Small Appliances and Recovery Requirements
Type I covers small appliances: factory-sealed units with 5 lb or less. Recovery percentages, the 4-inch vacuum option, disposal rules and the mail-in test format.
Type II: High-Pressure Systems and Leak Rules
Type II covers medium-, high- and very high-pressure appliances. Pressure categories, the evacuation table, the 200 lb split, and the leak repair rates and deadlines.
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Get 20 practice questions with explanations
Twenty original questions across Core, Type I, Type II and Type III. Each one comes with the answer, the reason, and the section of the rule it comes from. Plus the launch price when the Practice Bank opens.
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- 300+ questions written from scratch, across Core, Type I, Type II and Type III.
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