Module 1: Introduction to the HVAC Industry

Before you can master the trade, you need to understand the industry. Module 1 introduces you to the world of HVAC — where it came from, where it’s going, and what it takes to build a successful career in it.

At the end of this module, the student will be able to:

  • Explain how HVAC systems have evolved from ancient heating methods to modern climate control technology
  • Identify the key differences between residential and commercial HVAC systems
  • Describe the career opportunities available in the HVAC industry
  • Explain the importance of industry certifications, including EPA Section 608, NATE, and HVAC Excellence
  • Recognize the role of industry organizations such as ASHRAE and ACCA
  • Demonstrate knowledge of essential safety procedures including PPE, Lockout/Tagout, electrical hazards, and refrigerant handling
  • Identify OSHA’s role in maintaining safe working conditions for HVAC technicians

Click on the first lesson below to begin.

Course Content

HVAC Industry Overview
History of HVAC
5 Topics
1 Quiz
Introduction to HVAC History
Early Heating Methods
The Roman Hypocaust System
The Birth of Air Conditioning
Modern HVAC Systems
History of HVAC Knowledge Check (Quiz)
Residential vs Commercial HVAC
5 Topics
1 Quiz
Residential and Commercial HVAC
Residential HVAC
Commercial HVAC
Key Differences
Career Paths
Knowledge Check
Career Opportunities
5 Topics
1 Quiz
HVAC Career Overview
Installation Technician
Service Technician
Maintenance Technician
Career Growth
Knowledge Check
Licensing and Certifications
5 Topics
1 Quiz
Why Certifications Matter
EPA Section 608 Certification
NATE Certification
HVAC Excellence
State Licensing Requirements
Licensing and Certifications – Knowledge Check
Industry Organizations
5 Topics
1 Quiz
Industry Support Organizations
ACCA (Air Conditioning Contractors of America)
HVAC Excellence
Why Industry Organizations Matter
Industry Organizations – Knowledge Check
HVAC Safety Procedures
PPE Requirements
5 Topics
1 Quiz
What Is PPE?
Eye Protection
Hand and Foot Protection
Hearing and Respiratory Protection
PPE Best Practices
PPE Requirements – Knowledge Check
Lockout/Tagout Procedures
5 Topics
2 Quizzes
What Is Lockout/Tagout?
Hazardous Energy Sources
Lockout/Tagout Procedure
Verify Zero Energy
Common LOTO Mistakes
Lockout/Tagout (LOTO) – Knowledge Check
Ladder Safety Knowledge Check
Electrical Hazards
5 Topics
1 Quiz
Why Electrical Safety Matters
Electrical Shock Hazards
Arc Flash and Burn Hazards
Safe Electrical Work Practices
Electrical PPE and Testing Equipment
Electrical Hazards Knowledge Check
Refrigerant Safety
5 Topics
1 Quiz
What Are Refrigerants?
Refrigerant Exposure Hazards
Frostbite and Skin Contact
Refrigerant Recovery Procedures
EPA Requirements
Refrigerant Safety Knowledge Check
OSHA Basics
5 Topics
1 Quiz
What Is OSHA?
OSHA Worker Rights
Employer Responsibilities
Common OSHA Violations in HVAC
Building a Safety Culture
OSHA Basics Knowledge Check
Final Quiz
Lesson 1 Final Examination (Lessons 1.1 & 1.2)