You've studied. You know the recovery lb-per-hour tables in your sleep. Here's what actually trips people up on the day of the EPA 608 exam.
#1. Confirm which sections are open book
Core and Type I are open book at most proctored testing organizations. Type II and Type III are always closed book at proctored testing sites. If you're taking Universal at a proctored center, plan accordingly. Mail-in Type I exams have their own rules — check with your provider first.
#2. Bring a government photo ID
Testing sites turn people away for this every day. Driver's license, state ID, or passport. Expired ID = no exam.
#3. Arrive 20 minutes early
You'll fill out paperwork, get sworn in, and store phones and bags in a locker. Cutting it close puts you in the wrong mindset before question one.
## 4. Read every "which of the following is NOT" question twiceAt least three questions per section flip the polarity on you. Underline "NOT" / "EXCEPT" mentally before you look at the answers.
#5. Trust the specific number
If the question gives you a specific pressure, temperature, or pound figure and you recognize it — trust it. Second-guessing memorized numbers costs more points than any other single mistake.
#6. Don't leave anything blank
There's no penalty for guessing. If you're truly stuck, eliminate two obviously wrong answers and pick between the remaining two.
#7. Watch the Section 608 vs 609 confusion
608 = stationary equipment (buildings, chillers, supermarket racks). 609 = motor vehicle A/C (cars, light trucks). Every exam has at least one question testing whether you can tell them apart.
#8. Recovery vs recycling vs reclaiming
- Recovery — remove the refrigerant and store it, in any condition.
- Recycling — clean it on-site with filter-drier and separation.
- Reclaiming — reprocess to AHRI 700 purity spec (only allowed at EPA-certified reclaimers).
This distinction shows up in every Core exam. Learn it once, cash it in five times.
#9. Type II evacuation levels
You WILL be asked about required evacuation levels for high-pressure systems. Memorize the table by appliance size and disposal-vs-service scenario.
#10. If you fail one section — you only retake THAT section
Fail Type II but pass Core, Type I, and Type III? You keep the sections you passed and only retake Type II. That's why sitting for Universal is low-risk: partial credit is real.
Walk in calm, read carefully, trust your prep. That's the whole game.