EPA 608 Mastery Pro

Free EPA 608 practice tests for HVAC technicians and students.

Each video works through exam-style questions from the Core, Type I, Type II and Type III sections, with the reasoning behind every answer. Updated for the 2026 exam changes, including A2L and A3 refrigerants such as R-32 and R-454B.

Want more practice? The EPA 608 Mastery Pro app has 1,100+ questions with explanations, full timed mock exams graded section by section, flashcards, and P-T charts that work offline. Free to download on iPhone and Android.

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EPA 608 Mastery Pro is an independent study app from Sarafand Engineering Solutions LLC. It isn't affiliated with the U.S. EPA or any certifying organization.

Business inquiries: info@sarafandengineeringsolutions.com