EPA 608 Core Practice Test
Core is the section every technician must pass. It covers the environmental reasons for the rules, the Clean Air Act and Montreal Protocol, the Section 608 regulations, recovery and the three R’s, safety and shipping.
25 Core questions under a 45-minute clock, 70% to pass, with a cited explanation for every answer. The pass also unlocks the full Universal exam.
Or try the free Core drillWhat is the passing score on the closed-book Section 608 certification tests?
Watch worked examples, step by step
17 Core questions, each answer tied to the regulation behind it.
What the Core section covers
25 multiple-choice questions, 70% (18 correct) to pass. You must pass Core to receive any certification type.
- Ozone depletion and refrigerant families
- Why chlorine destroys stratospheric ozone, CFC vs HCFC vs HFC, ozone depletion potential and global warming potential.
- Clean Air Act and Montreal Protocol
- Phaseout dates for CFCs and R-22, the venting ban at service and disposal, and what counts as a de minimis release.
- Section 608 regulations
- Pressure classes, recovery equipment certification, major vs non-major repairs, the sales restriction and recordkeeping.
- Recover, recycle, reclaim
- What each term means, AHRI 700 purity for reclaimed refrigerant, and why refrigerants are never mixed.
- Safety and shipping
- Oxygen displacement, PPE, the 80% cylinder fill limit, nitrogen for leak testing, and DOT labels for recovered refrigerant.
- Flammable refrigerants
- A1, A2L and A3 safety classes and what changes when you work with R-32, R-454B or propane.
Sit Core under the clock
25 Core questions under a 45-minute clock, 70% to pass, with a cited explanation for every answer. The pass also unlocks the full Universal exam.
Or try the free Core drillCommon questions
Do I have to pass Core?
Yes. You must pass Core to receive any Section 608 certification type, and Type I, II or III results only count with a passing Core score.
How many Core questions must I get right?
Core has 25 questions and you need 70%, which is 18 correct.
25 Core questions under a 45-minute clock, 70% to pass, with a cited explanation for every answer. The pass also unlocks the full Universal exam.
Or try the free Core drillMore EPA 608 practice
Sources
Original independent practice written from 40 CFR Part 82 Subpart F and EPA guidance. Not affiliated with or endorsed by the U.S. Environmental Protection Agency or any certifying organization.