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HVAC Technician Course

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HVAC Technician Course

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HVAC Technician Course

Name: HVAC Technician Course
Price: 54000 NGN

Get the hands-on technical knowledge you need to work confidently on heating, cooling, and ventilation systems. This course covers everything from refrigeration cycles and electrical wiring to load calculations and refrigerant certification. Whether you're entering the trade or levelling up your skills, you'll finish ready to tackle real jobs.

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What you will learn:

You'll build a complete foundation in HVAC systems, starting with thermodynamics, refrigeration cycles, and electrical theory. You'll learn to install and service split systems, heat pumps, gas furnaces, and packaged rooftop units. The course covers duct design, airflow balancing, and ventilation standards for both residential and commercial buildings. You'll also work through HVAC controls, building automation systems, and variable frequency drives. Refrigerant handling, leak detection, and EPA certification prep are included. By the end, you'll have the diagnostic skills and technical knowledge employers expect from a qualified HVAC technician.

How you study in practice HVAC Technician Course

How you practise HVAC Technician Course

For companies looking to train their team

With Dedika for businesses, the course includes exercises and examples tailored to your own business and the specific needs of your company.

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Course content

8 Chapters • 38 LessonsDuration between 4 and 360 hours (you decide)

Chapter 1See details

HVAC Industry Foundations and Safety

Lesson 1 • Tools, Equipment, and Workspace Organisation
Identifies hand tools, power tools, and test instruments used in HVAC work. Proper tool selection and organisation reduce errors and improve efficiency.
Lesson 2 • Trade Terminology and Industry Standards
Covers essential HVAC vocabulary, measurement units, and industry-wide performance standards. Accurate terminology prevents errors in diagnosis and communication.
Lesson 3 • Overview of HVAC Systems
Introduces heating, ventilation, and air conditioning system categories and their roles in buildings. Provides the vocabulary needed for all subsequent technical chapters.
Lesson 4 • Personal Protective Equipment and Site Safety
Defines required PPE for HVAC tasks and establishes hazard-recognition habits. Safe practices introduced here apply throughout every hands-on chapter.

Chapter 2See details

Thermodynamics and Heat Transfer Principles

Lesson 1 • Sensible and Latent Heat
Distinguishes sensible heat changes from latent heat during phase changes of refrigerants and moisture. This distinction is critical for accurate load calculations and coil design.
Lesson 2 • Modes of Heat Transfer
Covers conduction, convection, and radiation as they occur in HVAC equipment and building envelopes. Understanding transfer modes guides insulation and equipment placement decisions.
Lesson 3 • Pressure, Temperature, and Fluid Behaviour
Examines gas laws and fluid dynamics as they apply to refrigerant and airflow in HVAC systems. Mastery enables accurate pressure-temperature diagnosis and airflow balancing.
Lesson 4 • Laws of Thermodynamics Applied to HVAC
Explains the first and second laws of thermodynamics in the context of heating and cooling cycles. These principles underpin every refrigeration and heating concept that follows.

Chapter 3See details

Refrigeration Cycle and Components

Lesson 1 • Expansion Devices and Refrigerant Flow Control
Covers thermostatic expansion valves, electronic expansion valves, and fixed orifice devices. Correct expansion device selection and adjustment optimise superheat and system capacity.
Lesson 2 • Refrigerants: Properties and Handling
Identifies common refrigerant types, their environmental impact, and safe handling requirements. Proper refrigerant management is compulsory for regulatory compliance and safety.
Lesson 3 • Condensers and Evaporators
Explains heat exchanger design, airflow requirements, and fouling effects on condenser and evaporator performance. Proper maintenance of these components sustains system efficiency.
Lesson 4 • The Vapour-Compression Refrigeration Cycle
Traces refrigerant through the four stages of compression, condensation, expansion, and evaporation. Cycle understanding is the prerequisite for all component and diagnostic work.
Lesson 5 • Compressors: Types and Operation
Compares reciprocating, scroll, rotary, and screw compressors by design and application. Students select appropriate compressor types and recognise failure symptoms.

Chapter 4See details

Electrical Systems for HVAC

Lesson 1 • Motors, Contactors, and Relays
Covers single-phase and three-phase motors, contactors, and relay operation in HVAC applications. Students test, replace, and size these components correctly.
Lesson 2 • Electrical Troubleshooting Techniques
Applies multimeter and clamp-meter measurements to isolate electrical faults systematically. A structured diagnostic approach reduces repair time and prevents repeat failures.
Lesson 3 • Control Circuits and Safety Devices
Examines low-voltage control circuits, thermostats, and safety switches that protect HVAC equipment. Proper control wiring prevents equipment damage and ensures safe operation.
Lesson 4 • Reading Wiring Diagrams and Schematics
Teaches interpretation of ladder diagrams, pictorial wiring diagrams, and component symbols. Schematic reading is essential for efficient troubleshooting and safe wiring.
Lesson 5 • Electrical Fundamentals for HVAC Technicians
Reviews voltage, current, resistance, and power as applied to HVAC loads and circuits. These fundamentals are the basis for all wiring and diagnostic work in this chapter.

Chapter 5See details

Air Distribution and Ventilation Systems

Lesson 1 • Fans, Blowers, and Air Handling Units
Examines centrifugal and axial fan types, blower performance curves, and air handling unit components. Fan selection and belt adjustment directly affect airflow and energy use.
Lesson 2 • Duct System Design Principles
Introduces duct sizing methods, friction loss calculations, and layout strategies for efficient air delivery. Correct duct design prevents noise, energy waste, and comfort complaints.
Lesson 3 • Duct Materials, Fabrication, and Sealing
Compares sheet metal, flexible, and fibreglass duct materials and covers proper fabrication and sealing techniques. Airtight ducts are critical for energy efficiency and system performance.
Lesson 4 • Ventilation Standards and Indoor Air Quality
Covers minimum ventilation rates, filtration requirements, and contaminant control strategies. Proper ventilation protects occupant health and satisfies building code requirements.
Lesson 5 • Airflow Measurement and System Balancing
Teaches use of pitot tubes, anemometers, and flow hoods to measure and balance air distribution. Balanced airflow ensures uniform comfort and meets ventilation standards.

Chapter 6See details

Heating Systems: Installation and Service

Lesson 1 • Gas Furnace Operation and Components
Explains heat exchanger, burner, ignition, and venting components of gas furnaces. Component knowledge enables accurate diagnosis and safe service of gas heating equipment.
Lesson 2 • Combustion Analysis and Efficiency
Uses combustion analysers to measure flue gas composition and calculate heating efficiency. Proper combustion tuning reduces fuel consumption and prevents carbon monoxide hazards.
Lesson 3 • Electric Heating Systems
Examines electric resistance heaters, heat strips, and baseboard units used in HVAC applications. Electric heating diagnosis relies on electrical skills developed in the previous chapter.
Lesson 4 • Oil Heating Systems
Covers oil burner components, nozzle selection, and fuel delivery system maintenance. Oil system service requires specific tools and safety practices distinct from gas systems.
Lesson 5 • Hydronic Heating Systems
Introduces boilers, pumps, piping, and terminal units used in hot-water heating systems. Hydronic systems require both plumbing and HVAC knowledge for proper service.

Chapter 7See details

Cooling Systems: Installation and Service

Lesson 1 • Packaged Units and Rooftop Equipment
Covers installation, startup, and service of self-contained packaged and rooftop HVAC units. Rooftop work adds safety and access considerations beyond split system service.
Lesson 2 • Cooling System Diagnostics and Fault Resolution
Applies pressure-temperature analysis, superheat, and subcooling readings to diagnose cooling faults. Systematic diagnosis reduces unnecessary part replacement and callback rates.
Lesson 3 • Split System Air Conditioner Installation
Details outdoor unit placement, refrigerant line set installation, and indoor coil connection procedures. Correct installation prevents refrigerant leaks and premature equipment failure.
Lesson 4 • System Charging and Refrigerant Management
Teaches weighing-in, subcooling, and superheat methods for accurate refrigerant charging. Proper charge levels are the single largest factor in system efficiency and reliability.
Lesson 5 • Heat Pump Systems: Heating and Cooling Modes
Explains reversing valve operation, defrost cycles, and auxiliary heat integration in heat pumps. Heat pump diagnosis requires understanding both cooling and heating cycle interactions.

Chapter 8See details

HVAC Controls and Building Automation

Lesson 1 • Building Automation System Fundamentals
Introduces BAS architecture, communication protocols, and point configuration for HVAC monitoring. BAS integration enables centralised control and data-driven maintenance decisions.
Lesson 2 • Commissioning and Controls Troubleshooting
Applies systematic commissioning checklists and signal-tracing methods to verify and repair control systems. Thorough commissioning prevents callbacks and validates system performance.
Lesson 3 • Variable Frequency Drives in HVAC
Explains VFD operation, parameter programming, and application to fans and pumps in HVAC systems. VFDs reduce energy consumption and extend motor life when properly configured.
Lesson 4 • Thermostat Types and Configuration
Compares mechanical, digital, programmable, and smart thermostats and covers wiring and setup. Correct thermostat configuration is the first step in any control system commissioning.
Lesson 5 • Zone Control Systems
Covers damper-based zoning, zone control boards, and bypass damper sizing for multi-zone systems. Zoning improves comfort and efficiency in buildings with varying load profiles.

Certification

Your valid completion certificate

This course is for you:

Career changer: seeking a stable, well-paying skilled trade with strong job demand.
Recent high school graduate: exploring vocational paths before committing to a four-year degree.
Maintenance technician: wanting to add HVAC service skills to an existing facilities role.
Apprentice HVAC worker: needing structured theory to support on-the-job field experience.
Homeowner-turned-entrepreneur: ready to turn mechanical curiosity into a licensed service business.
Military veteran: translating hands-on technical discipline into a civilian trade career.

What our students say

Your classes are perfect. I purchased the one-year package and finally have the opportunity to follow various topics of my interest without needing to change platforms... I thank you for everything you do, I've already recommended you to other people...