EPA Section 608 · refrigerant handling certification

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.

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.

5 free

Questions: 15
Due now: 15
Attempts: 0

Type I

Small appliances (≤ 5 lb charge): household refrigerators, room A/C, water coolers, vending machines.

5 free

Questions: 10
Due now: 10
Attempts: 0

Type II

High-pressure / very-high-pressure: residential split-system A/C, heat pumps, commercial refrigeration.

5 free

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.

5 free

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.