Resources
Study materials and references to help you prepare for HVAC certification exams.
Code-Family Hubs
IFGC Hub
Practice tests, flashcards, and study guide for the International Fuel Gas Code.
IMC Hub
Practice tests, flashcards, and study guide for the International Mechanical Code.
EPA 608 Hub
Practice tests, flashcards, and study guide for the EPA 608 refrigerant certification.
Choose a hub for your code family, review the overview and study materials, then move into practice tests or flashcards when you're ready.
Study Guides
IFGC Chapter Index
Chapter-by-chapter study guide for the International Fuel Gas Code — scope, definitions, gas piping, venting, and appliance requirements.
IMC Chapter Index
Chapter-by-chapter study guide for the International Mechanical Code — ventilation, duct systems, exhaust, combustion air, and more.
EPA 608 Study Guide
Comprehensive guide covering refrigerant handling, certification types, recovery requirements, and exam preparation tips.
Code References
Licensing
Glossaries
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