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You tell us what you’re studying for
and your exam date
Pass your EPA 608 exam First time
What is MindMax?
Whether you’ve left it to the last minute or you’re six months out, we’ve got the plan to get you to pass
MindMax is an adaptive tutor app for iPhone and Android. Tell it when your EPA 608 certification exam is, and it plans short daily lessons you talk through with a tutor, adapting to your answers as you go.
A revolutionary way to learn
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We assess your knowledge
and build a daily study plan, working backwards from your exam date.
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We train your memory so everything sticks
and you pass first time
Everything the exam covers, in order
EPA Section 608 Universal Technician Certification: 5 modules and 74 lessons. Preview Core Section here, lesson by lesson with its clips. Study all 5 modules in the app.
See the full syllabus- Ozone, Climate and Refrigerant Chemistry2 lessons
- The Law: Statutes, Treaties and Programs3 lessons
- Section 608 Rules Every Technician Must Know7 lessons
- What the Law Now Requires for HFCs2 lessons
- Refrigerants, Substitutes and Lubricants4 lessons
- Refrigeration Fundamentals4 lessons
- Recovery, Recycling and Reclamation4 lessons
- Evacuation and Dehydration2 lessons
- Safety, Cylinders and Shipping3 lessons
- Scope and Definitions
- Recovery Requirements
- Recovery Techniques
- Disposal and Records
- Safety
- Scope and Equipment
- Recovery and Evacuation
- Leak Detection and Repair
- Service Practice
- Safety
- Scope and Fundamentals
- Leak Detection and Repair
- Recovery and Evacuation
- Service Practice
- Safety
- The Big Collision
- Numbers by Unit
Learn by doing, not by rereading
A real lesson from the Core Section: Pressure-Temperature Relationship and Vacuum Units. Watch it, try it, then test yourself.
Loading the clip…
Here's a PT chart for R-134a: pressure down the left, saturation temperature on the right. Put your finger in the pressure column and run it down until you hit 30 psig. Now slide straight across that row, and you land on 35 degrees. So at 30 psig, liquid R-134a taking in heat boils at 35 degrees. And vapor at that same pressure, giving heat away, condenses at 35 degrees too. It's one number, not two, because boiling and condensing are the same line crossed in opposite directions.
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Watch it drawn
Every lesson opens with a short clip that draws the idea while it explains it. This one is 30 seconds.
Saturation temperature35°F
R-134a30.4 psig
R-410A108 psig
0°F120°F
At 35°F, R-134a sits at 30 psig: the example from the clip. Read across, not down.
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Try it with your hands
Watch the pressure follow the temperature. It moves on its own; drag it to take over and Em tells you what you're looking at.
Question 1 of 5
The low-side gauge on an R-134a system reads 30 psig. What temperature is the refrigerant boiling at in the evaporator?
Tap an answer and I’ll tell you why.
Question 1 is checked by a person; the rest are practice questions from the app.
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Then test yourself
Five questions, the way the app asks them. Get one wrong and Em tells you why.
The words the exam tests
16 key terms from the Core Section, each with the lesson that teaches it.
All 16 key terms- 80 percent fill ruleA refillable cylinder may be filled to at most 80 percent of its volume with liquid, checked on a scale, leaving room for the liquid to expand.Cylinder Handling and the 80 Percent Fill Rule
- CFCA chlorofluorocarbon: chlorine, fluorine and carbon, no hydrogen. The most ozone-depleting family, such as R-12.Refrigerant Families, ODP and GWP
- MicronA thousandth of a millimetre of mercury, the unit for reading a deep vacuum.Pressure-Temperature Relationship and Vacuum Units
- ReclaimTo process refrigerant to the AHRI 700 purity standard and prove it by analysis. Done by an EPA-certified reclaimer.Recover, Recycle, Reclaim
- SubcoolingHow far a liquid is below its saturation temperature at its pressure.The Basic Refrigeration Cycle
- Global warming potentialA gas's warming effect over time, measured against carbon dioxide, which is 1.Refrigerant Families, ODP and GWP
Why you’ll pass first time
Check-in
How are you feeling about phaseout dates today?
⏱ 2 minsWe break down the entire course and focus on your weakest areas
We make sure you cover the ground you need to pass.
I got the evacuation table question wrong again. Why can’t I get it right?
That’s the question wording catching you out, not your memory. Let’s sort the table by pressure class first, then try a few exam-style questions.
We know exactly how you need to learn
Em remembers what you got wrong, knows what’s left to learn, and trains your brain to hold it all in time for test day.
Built by memory champions
We use memory techniques to embed even the trickiest topics, dates and vacuum levels. You’ll walk in thinking like a certified technician.
From the creators of Memrise
Ed Cooke and Daniel Zohar built Memrise — used by over 80 million people worldwide, as of 2026. Ed is an Oxford-educated memory scientist and world memory champion. They’ve spent their careers on one question: why does learning feel so hard, and what would it look like if it didn’t? MindMax is their answer.
About MindMax“We believe the human mind is infinite. And awash with potential. Pull up on the doom dive: AI is no match for the human brain.”
EPA 608 exam guides
HVAC
Best EPA 608 Practice Test, SkillCat vs ESCO vs Mainstream
SkillCat costs $10 a month with up to four proctored attempts on your phone. ESCO charges $85 for all four sections. See which EPA 608 prep fits you.
14 November 2026
HVAC
Is the EPA 608 Test Open Book? Proctoring and PT Chart Rules
Only a Type I-only mail-in EPA 608 test is open book. Type II, III and Universal are closed book and proctored, including online by webcam. Chart rules vary.
4 November 2026
HVAC
How to Study for the EPA 608 Exam and Pass Universal First Try
How to study for the EPA 608 exam from zero. Realistic study hours, a one-week plan, the 90% practice rule, and why one practice bank isn't enough.
21 October 2026