1,700+ questions with explanations. Practice your weak spots and prepare for all four exam sections.
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Take 25-question mock exams for each section, then track your scores and progress to see where to study next.
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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."
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