EPA 608 — The Federal Cert
EPA Section 608 is federally required to buy, handle, or recover refrigerant. There's no way around it. This lesson covers the 4 cert types, the 4-section open-book exam, and the rules every tech must know to pass.
The lesson
Who needs it
ANYONE servicing equipment containing more than 5 lbs of refrigerant must hold EPA 608. Working without one is a federal violation. Many supply houses won't sell you refrigerant without showing your card.
The 4 cert types
Type I = small appliances (window units, fridges, vending machines, <5 lbs). Type II = high-pressure systems (split AC, heat pumps). Type III = low-pressure systems (chillers). Universal = all three. Get Universal — same effort, full coverage.
The Core section
Everyone takes Core (25 questions), regardless of cert type. Core covers ozone depletion, CFC/HCFC/HFC chemistry, regulations, Clean Air Act, Section 608 specifically. Pass 70%+.
Recovery & recycling rules
You must recover refrigerant before opening a sealed system — never vent. Use EPA-certified recovery equipment. Cylinders must be DOT-approved. Refrigerant must be recycled, reclaimed, or sent to an EPA-approved facility. Logbook everything.
Refrigerant generations
CFC (R-12, banned) → HCFC (R-22, banned for new equip 2010, phaseout 2020) → HFC (R-410A, R-134a, current standard) → HFO (R-32, R-1234yf, low-GWP future). The AIM Act of 2020 phases down HFCs through 2036.
Tool list
- EPA 608 study guide (Esco Institute is the gold standard)
- Recovery machine + cylinder (DOT-approved)
- Logbook for refrigerant tracking
- Manifold gauge set
- Vacuum pump (for evacuating to 500 microns)
- Practice exam software
Safety — Read or get hurt
- !!Venting refrigerant intentionally: $44,539 fine per violation per day under Section 608.
- !!Cylinders left in hot trucks can explode — burst disc at 165°F.
- !!Refrigerant displaces oxygen — never service in unventilated basements or vans.
Take the mini quiz
6 questions · pass at 80%