Dedika is a platform for learning by doing: whether it's creating a business proposal, becoming a manicurist, or using a new tool, for example. Whatever your goal, the best content on the subject already exists. But it's often in another language, expensive, scattered around, lacking practical activities, or part of a course that's too long for a busy routine. That's why Dedika has its own method: we find this material wherever it is, organise what makes sense for your goal, review it with the help of experts who are available to answer questions, and create practical exercises so you can learn by doing. You are the most important part of your journey and no one knows it better than you: choose the content and course length, decide whether to learn online or offline, and pick your preferred format. It could be video, text, audio, or a summary. Your way, only with what makes sense for you. Here, every moment of dedication counts for more and you reach what matters faster.

Our courses include a summary at the end of each chapter, from which you can download a PDF and print it.

More than 2 million students worldwide

Present in more than 180 countries

Certificate valid in your country

Home Page

...

Air Conditioning Assembly and Maintenance Course

All courses

Engineering, Construction and Technology

Refrigeration

Air Conditioning Assembly and Maintenance Course

For all levels

Air Conditioning Assembly and Maintenance Course

Name: Air Conditioning Assembly and Maintenance Course
Price: 204 GBP

Master every stage of air conditioning work, from system fundamentals and refrigerant line fabrication to full unit installation and fault diagnosis. This course gives you the hands-on technical skills employers and clients demand. Whether you are entering the trade or sharpening your existing knowledge, you will finish ready to work on real systems with confidence.

Dedika for businesses

What you will learn:

You will start with the core principles of refrigeration cycles and system components, then move into tools, copper line fabrication, brazing, and pressure testing. From there, you will learn how to read electrical diagrams, wire AC units safely, and troubleshoot mechanical and electrical faults step by step. The course covers complete system installation, including site planning, mounting, evacuation, and refrigerant charging. You will also build solid preventive maintenance routines and learn energy efficiency optimisation techniques. Supplementary content covers ductwork, heat pump systems, refrigerant regulations, and customer communication skills.

How you study in practice Air Conditioning Assembly and Maintenance Course

How you practise Air Conditioning Assembly and Maintenance Course

For businesses looking to train their team

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

Click here

Course content

8 Chapters • 40 LessonsDuration between 4 and 360 hours (you decide)

Chapter 1See details

Fundamentals of Air Conditioning Systems

Lesson 1 • Refrigerants: Properties and Selection
Examines refrigerant classifications, global warming potential, and selection criteria. Prepares students to choose appropriate refrigerants for given system designs.
Lesson 2 • Refrigeration Cycle Principles
Covers heat transfer, phase change, and the vapour compression cycle. Establishes the thermodynamic foundation required for all subsequent assembly and maintenance tasks.
Lesson 3 • Core Components Overview
Identifies compressors, condensers, evaporators, and expansion devices. Connects each component's function to its role in the refrigeration cycle.
Lesson 4 • AC System Types and Configurations
Surveys split, packaged, mini-split, and central systems. Students match system type to application requirements and recognise configuration differences.
Lesson 5 • Safety Fundamentals in AC Work
Establishes personal protective equipment use, electrical hazard awareness, and refrigerant handling safety. Ensures safe practices before any hands-on work begins.

Chapter 2See details

Tools, Instruments, and Workspace Setup

Lesson 1 • Diagnostic and Measurement Instruments
Introduces manifold gauge sets, thermometers, anemometers, and multimeters. Connects accurate measurement to reliable system diagnosis and performance verification.
Lesson 2 • Refrigerant Handling Equipment
Covers recovery machines, vacuum pumps, and refrigerant cylinders. Students handle refrigerant safely and comply with environmental handling standards.
Lesson 3 • Workspace Organisation and Safety Setup
Establishes tool storage, hazard labelling, and ventilation requirements for AC work areas. Organised workspaces reduce errors and improve technician efficiency.
Lesson 4 • Hand Tools for AC Assembly
Covers wrenches, tube cutters, flaring tools, and swaging kits. Students select and use each tool correctly to prepare refrigerant lines and fittings.

Chapter 3See details

Refrigerant Line Fabrication and Connections

Lesson 1 • Pressure Testing and Leak Detection
Teaches nitrogen pressure testing, electronic leak detection, and bubble solution methods. Students confirm system tightness before refrigerant charging.
Lesson 2 • Brazing and Soldering Refrigerant Lines
Introduces torch operation, filler metal selection, and nitrogen purging during brazing. Proper brazing prevents oxidation scale inside refrigerant circuits.
Lesson 3 • Mechanical Fittings and Compression Joints
Covers flare nuts, compression fittings, and quick-connect couplings. Students apply correct torque and verify joint integrity without brazing equipment.
Lesson 4 • Copper Tube Cutting and Preparation
Teaches precise cutting, deburring, and cleaning of copper tubing. Proper preparation prevents contamination and ensures strong, leak-free joints.
Lesson 5 • Flaring and Swaging Techniques
Covers single and double flare creation and swaged joint formation. Students produce dimensionally correct flares that seal under operating pressures.

Chapter 4See details

Electrical Systems and Wiring for AC Units

Lesson 1 • Motor and Compressor Wiring
Covers fan motor, compressor, and capacitor wiring procedures. Correct wiring ensures proper motor rotation and prevents premature component failure.
Lesson 2 • Control Circuit and Thermostat Wiring
Teaches low-voltage control wiring, thermostat terminal assignments, and control board connections. Proper control wiring enables accurate temperature regulation.
Lesson 3 • Electrical Testing and Fault Identification
Applies multimeter and clamp meter techniques to measure voltage, current, and resistance. Students isolate open circuits, shorts, and failed components systematically.
Lesson 4 • Reading AC Electrical Diagrams
Covers schematic symbols, ladder diagrams, and wiring diagram conventions. Accurate diagram reading is the prerequisite for all electrical assembly and fault-finding tasks.
Lesson 5 • Power Supply and Circuit Protection
Examines single-phase and three-phase supply, disconnect switches, and overcurrent protection. Students size and install protective devices to match unit specifications.

Chapter 5See details

AC Unit Assembly and Installation

Lesson 1 • System Evacuation and Refrigerant Charging
Covers deep vacuum procedure, moisture removal verification, and refrigerant charging by weight and superheat. Correct charging is critical to efficiency and equipment life.
Lesson 2 • Refrigerant Line Routing and Insulation
Covers line set routing, support spacing, and foam insulation application. Proper insulation prevents condensation and maintains system efficiency.
Lesson 3 • Site Survey and Installation Planning
Covers load estimation, unit placement, and structural support assessment. Thorough planning prevents installation errors and ensures optimal system performance.
Lesson 4 • Mounting Indoor and Outdoor Units
Teaches bracket installation, levelling, and vibration isolation for both unit types. Correct mounting reduces noise, vibration, and structural stress.
Lesson 5 • Condensate Drain System Installation
Teaches drain pan, trap, and drain line installation with correct slope. Proper drainage prevents water damage and microbial growth inside units.
Lesson 6 • Commissioning and Initial Startup
Guides first-run checks, operating parameter verification, and customer handover documentation. Commissioning confirms the system meets design performance targets.

Chapter 6See details

Preventive Maintenance Procedures

Lesson 1 • Mechanical Component Inspection
Covers fan blade, belt, bearing, and motor inspection procedures. Early detection of wear prevents unexpected failures and costly downtime.
Lesson 2 • Filter and Coil Cleaning Procedures
Teaches filter inspection, replacement, and coil cleaning with appropriate chemicals. Clean filters and coils restore airflow and heat transfer efficiency.
Lesson 3 • Electrical System Maintenance Checks
Covers terminal tightening, capacitor testing, contactor inspection, and control board review. Electrical maintenance prevents nuisance trips and component burnout.
Lesson 4 • Maintenance Scheduling and Documentation
Covers maintenance interval planning, service log creation, and work order management. Structured documentation supports warranty compliance and performance trending.
Lesson 5 • Refrigerant System Checks
Teaches operating pressure verification, superheat and subcooling checks, and leak inspection during maintenance visits. Refrigerant integrity directly affects efficiency and compliance.

Chapter 7See details

Fault Diagnosis and Corrective Maintenance

Lesson 1 • Diagnosing Refrigerant System Faults
Covers low charge, overcharge, restriction, and non-condensable gas symptoms. Students interpret pressure and temperature data to pinpoint refrigerant circuit problems.
Lesson 2 • Structured Troubleshooting Methodology
Introduces symptom-based diagnosis, fault isolation logic, and root cause analysis. A systematic approach reduces diagnostic time and prevents repeat failures.
Lesson 3 • Diagnosing Electrical and Control Faults
Covers compressor lockout, failed capacitors, faulty contactors, and control board errors. Students use test instruments to confirm electrical faults before replacing components.
Lesson 4 • Component Replacement and System Restoration
Guides safe component removal, correct replacement, and post-repair verification. Proper restoration procedures confirm the fault is resolved and the system is fully operational.
Lesson 5 • Diagnosing Airflow and Coil Problems
Teaches diagnosis of restricted airflow, frozen evaporators, and dirty condenser coils. Airflow faults are amongst the most common causes of reduced system capacity.

Chapter 8See details

Advanced System Optimisation and Energy Efficiency

Lesson 1 • Refrigerant Charge Optimisation
Applies superheat, subcooling, and manufacturer charging charts to achieve optimal charge. Correct charge improves efficiency and prevents compressor damage.
Lesson 2 • Airflow Balancing and Duct Optimisation
Teaches static pressure measurement, damper adjustment, and duct sealing techniques. Balanced airflow maximises comfort and reduces blower energy consumption.
Lesson 3 • Variable Speed and Inverter Technology
Examines inverter-driven compressors and variable-speed fan motors. Students configure and verify inverter systems for maximum part-load efficiency.
Lesson 4 • Energy Audit and Improvement Planning
Guides energy consumption measurement, loss identification, and improvement prioritisation. Students produce actionable efficiency improvement plans for existing installations.
Lesson 5 • Performance Benchmarking and Data Analysis
Covers efficiency ratio calculations, baseline data collection, and trend analysis. Benchmarking identifies performance gaps and guides targeted improvement actions.

Certification

Your valid completion certificate

This course is for you:

Aspiring HVAC technician: ready to build a skilled trade career from scratch.
Maintenance worker: wants to add refrigeration and AC skills to their toolkit.
Electrician or plumber: looking to cross-train into the HVAC trade professionally.
Career changer: seeking stable, in-demand work in building systems and climate control.
Small contractor: needs structured technical knowledge to expand service offerings confidently.
Facilities technician: responsible for building comfort systems and wants deeper AC expertise.

What our students say

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