ForgEd Digital Textbook · 2026
ForgEd · Digital Textbook
HVAC Fundamentals
ForgEd skilled-trades survey — heating, cooling, airflow, controls, service, and efficiency
- Chapters
- 10
- Read time
- ~80 min
- Format
- Textbook
- Depth
- Academic
Preface
HVAC technicians balance comfort, energy use, and refrigerant stewardship. This textbook explains how heating, cooling, and ventilation systems work in U.S. homes and small commercial buildings.
Ten chapters cover equipment types, distribution, controls, installation and maintenance, efficiency, codes, and careers. Section quizzes gate progress; course exams use a 200-question bank.
EPA Section 608 certification is required to handle refrigerants—this course does not replace EPA testing or manufacturer cert classes. Follow lockout/tagout and gas safety rules on every call.
How to use this guide: scroll through all chapters in order, or jump via the table of contents. Each chapter includes learning objectives, cited sources, and section navigation—like a reference textbook, not a slideshow of bullet summaries.
ForgEd · Introduction
HVAC Fundamentals · Course introduction
How this course is organized, how to study with the textbook and quizzes, and what you will be able to do when you finish.
Watch the intro or continue when you are ready. Chapter 1 stays locked until you continue.
Complete the course introduction above to unlock the textbook chapters.