HVAC Refrigeration
Fundamentals Course

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Online Class

On-Demand

Self-Paced

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Online HVAC Class Overview

Our Fundamentals of HVAC Refrigeration course is a self-paced, video-based training program that breaks down the core science behind cooling systems. You get directly into heat theory, refrigeration basics, and the complete refrigeration cycle, building the diagnostic foundation required to troubleshoot equipment accurately. The curriculum connects thermodynamic theory to real-world applications, teaching you exactly how and why the refrigeration cycle works. You will learn efficiency-focused practices that reduce energy waste and improve system performance. Whether you are brand new to the trade, a maintenance professional, or a working tech needing a technical refresher, this class gives you the baseline knowledge required to understand and service HVAC systems.

Course Topics & Modules

This course is organized into step-by-step modules that build your understanding of core HVAC concepts. Each module introduces essential theory and applies it to real-world refrigeration systems, preparing you for both technical study and practical fieldwork.

Course Module	Description of Training
Heat Theory	This module introduces how heat energy naturally moves from warmer to cooler areas and how pressure influences boiling and freezing points. Students learn the basic thermodynamic principles that make refrigeration possible, connecting scientific theory to practical HVAC applications.
Refrigeration Basics	Students study the core concepts behind cooling and refrigeration, including how sensible and latent heat are used in the process. Instruction explains how refrigerants absorb and reject heat as they move through a system, providing a strong foundation for understanding residential, commercial, and industrial applications.
Refrigeration Components & Cycle	This section covers the complete HVAC refrigeration cycle, including evaporation, compression, condensation, and expansion. Each stage is explained alongside the major system components such as compressors, evaporators, condensers, and expansion valves. Students also learn how these components interact to transfer heat, maintain efficiency, and support reliable system operation.

Course Format & Access

Our Fundamentals of HVAC Refrigeration course is delivered fully online in an on-demand, self-paced format, giving you 24/7 access to training. Modules combine videos, notes, images, practice questions, and a final exam so you can learn and review on your schedule.

Flexible access anytime, anywhere
Final exam included with instant results
Certificate of completion awarded

Final Exam Requirements

The final exam consists of 20 multiple-choice questions that assess your understanding of the core topics. A score of 75% or higher is required to pass. Results are available instantly, so you’ll know right away if you’ve passed. You will have unlimited test attempts until you pass the exam. Once you pass, you will receive your certificate.

Who Should Take This Course

This online HVAC course is for:

Beginners: A strong introduction for anyone interested in starting a career in HVAC. You’ll learn the essential theories and systems that everything else builds on.
Current Technicians: Even if you already work in HVAC, this class helps reinforce core concepts, refresh your knowledge, and strengthen troubleshooting skills.
Professionals in Related Fields: Maintenance professionals, building operators, or anyone responsible for mechanical systems can benefit from understanding refrigeration principles.

If you’re planning to become a licensed HVAC technician, it’s recommended that you also pursue your EPA 608 Certification to work legally with refrigerants.