EPA 608 Study Center.
Practice across the four 608 sections with spaced repetition. Each track surfaces questions when they're due — answer Again, Good, or Easy and the SM-2 ladder schedules the next review. Passing all four tracks earns the Universal certification.
20-question PDF · no email required · explanations + code references included.
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Drop your email and we’ll send the complete study PDF — every question, answer, and code reference.
Take the timed mock exam
A scored, countdown-timed run across all four sections — 70% to pass, with a per-section breakdown when you finish.
Core
Universal Core — required for every certification. Refrigerant chemistry, recordkeeping, recovery practice.
- Questions
- 15
- Due now
- 15
- Attempts
- 0
Type I
Small appliances (≤ 5 lb charge): household refrigerators, room A/C, water coolers, vending machines.
- Questions
- 10
- Due now
- 10
- Attempts
- 0
Type II
High-pressure / very-high-pressure: residential split-system A/C, heat pumps, commercial refrigeration.
- Questions
- 10
- Due now
- 10
- Attempts
- 0
Type III
Low-pressure: centrifugal chillers (R-11, R-123, R-1233zd). Purge units and rupture-disc practice.
- Questions
- 10
- Due now
- 10
- Attempts
- 0
Question content is derived from 40 CFR Part 82 Subpart F and the EPA Section 608 Preparatory Manual. This is study material — the actual proctored exam is administered by EPA-approved organizations and is the only path to certification.
Pro Feature: EPA 608 Study Center
Spaced-repetition study tools for techs preparing for the EPA 608 exam.
Professional Plumbing Tools