1,700+ questions with explanations. Practice your weak spots and prepare for all four exam sections.
20 questions. No download or signup.
Get the full app for $12.99 USD ยท iOS & Android
From your first practice question to your next mock exam.
Understand why an answer is right. Read through every answer in Cram, or test yourself with instant feedback in Study.
Smart Practice and Most Missed bring tricky questions back into focus, so you spend more time on what needs work.
Take 25-question mock exams, timed like the real one or untimed. Skip and flag questions to come back to, then review what is left before you submit. Pass two in a row and the section shows Ready to pass.
Study offline in English or Spanish, practice your weakest topics, bookmark tricky questions, back up your progress, and set reminders to keep your practice on track.
Swipe through the app screens
Home
Section
Study
Smart Practice
PT Chart
Mock Exam Results
Progress
Review Answers
Most Missed
Topics
Comprehensive question banks for every certification level
Ozone depletion, the Clean Air Act, refrigerant safety, and proper handling procedures. Required for any Type certification.
Small appliances with 5 lbs or less of refrigerant: window units, refrigerators, and vending machines.
High-pressure appliances: residential A/C, heat pumps, and commercial refrigeration systems.
Low-pressure appliances: chillers used in large commercial and industrial HVAC systems.
Real reviews from people who passed their exam
"This app is amazing! I used it, and only missed one question on my 608 test. If you're taking the EPA 608 test and you want to ace it, this is what you need."
"After looking at a few books and debating over taking a class, I found this app. I spent 2 days just using this app and now I just finished the test. Simply amazing."
"Using this app with the book, my scores went from way low to passing with 90-100% each time. I feel very confident I'll be holding my universal HVAC license soon."
Take a free 20-question practice test right in your browser. No download or signup required.
Start Free Practice TestJoin thousands of HVAC technicians who passed their EPA 608 exam with this app.