EPA 608 Certification Flashcards
Master the core concepts, evacuation requirements, leak thresholds, and environmental laws needed to pass the proctored exam.
Ozone Depletion Potential (ODP)
A measure of a substance's ability to destroy stratospheric ozone relative to CFC-12 (R-12)
How to Study with These Flashcards
Flashcards work best when you use active recall and spaced repetition together. Read the front of the card, try to say the answer out loud or in your head before flipping, then check your answer. Cards you get wrong should come back more often than cards you already know.
Start with 10-15 cards per session instead of trying to get through all of them at once. Short daily sessions (15-20 minutes) are more effective than one long cramming block. If you study the same cards across multiple days, your recall rate on exam day goes up significantly.
Step 1
Read the term on the front. Try to recall the definition before flipping.
Step 2
Flip the card. Compare your answer. Pay attention to specific numbers and dates.
Step 3
Review missed cards again at the end of your session. Come back to them tomorrow.
What Each Flashcard Category Covers
Core Section
The Core section is required for every EPA 608 certification level. These flashcards cover ozone depletion science, Clean Air Act regulations, the Montreal Protocol and AIM Act, refrigerant types and oil compatibility, the three R's (recovery, recycling, reclaiming), venting prohibitions, SNAP substitutes, and safety procedures. Most test-takers underestimate Core because they think field experience covers it. It doesn't. Core is regulation-heavy, and the exam tests specific numbers: fine amounts, dates, and legal definitions.
Type I — Small Appliances
Type I covers appliances with less than 5 pounds of refrigerant, typically window units, household refrigerators, and vending machines. These flashcards focus on recovery requirements for hermetically sealed systems, system-dependent vs. self-contained recovery equipment, and the specific evacuation percentages required (90% for working compressors, 80% for non-working). Type I is the shortest and most straightforward section of the four.
Type II — High-Pressure Systems
Type II applies to high-pressure and very-high-pressure appliances, which includes most residential and commercial systems that HVAC technicians work on daily. The flashcards cover mandatory leak repair thresholds (10% for comfort cooling, 20% for commercial refrigeration, 30% for industrial process), evacuation levels by equipment age and charge size, dehydration procedures, and the 30-day repair deadline for systems with 50+ pounds of charge.
Type III — Low-Pressure Systems
Type III covers low-pressure appliances, primarily centrifugal chillers found in large commercial and industrial buildings. If you've only done residential work, this section will feel unfamiliar. Flashcards focus on purge units, rupture disc requirements, water tube freezing prevention, low-pressure evacuation targets (25 mm Hg absolute), and the unique charging and recovery procedures for chillers that operate below atmospheric pressure.
Tips for Memorizing EPA 608 Content
- Focus on numbers first. The exam tests specific values: 80% cylinder fill limit, 70% passing score per section, 30-day repair deadline, 50-pound charge threshold. Get these numbers locked in early.
- Don't confuse recycling and reclaiming. Recycling happens on-site with basic filtration. Reclaiming requires sending refrigerant to an EPA-certified facility for lab processing back to ARI 700 purity standards. The exam asks this in multiple ways.
- Know your dates. July 1, 1992 (venting ban), November 14, 1994 (sales restriction), November 15, 1995 (substitutes included), January 1, 2020 (R-22 production ban). These come up on Core every time.
- Use category filters. Instead of studying all cards randomly, filter by category and master one section at a time. Start with Core, then work through Type I, II, and III in order.
- Study in pairs. If you're preparing with a coworker or classmate, quiz each other. Explaining a concept out loud forces you to actually understand it, not just recognize it.