Certificate in Air-Conditioning Service & Maintenance Technology

The Certificate in Air-Conditioning Service & Maintenance Technology is designed to provide learners with practical knowledge and technical skills required for the installation, servicing, inspection, troubleshooting, repair, maintenance, and performance evaluation of air-conditioning systems used in residential, commercial, institutional, and light industrial environments.

The program introduces the fundamental principles of refrigeration and air-conditioning, including the refrigeration cycle, heat transfer, pressure and temperature relationships, refrigerants, compressors, condensers, evaporators, expansion devices, fans, filters, thermostats, controls, and electrical components. Learners will develop practical skills for identifying system components, carrying out routine service procedures, diagnosing faults, and maintaining efficient system operation.

The course covers split air-conditioning systems, window units, packaged systems, ducted systems, and basic chilled-water and central air-conditioning concepts. Emphasis is placed on preventive maintenance, refrigerant handling, leak detection, electrical testing, airflow and temperature checks, cleaning procedures, component inspection, fault diagnosis, energy efficiency, workplace safety, and professional service practices.

Skills Covered

• Fundamentals of air-conditioning technology

• Basic refrigeration principles

• Heat transfer and cooling principles

• Refrigeration cycle and system operation

• Pressure and temperature relationships

• Air-conditioning system components

• Compressors and compressor types

• Condensers and condenser operation

• Evaporators and evaporator coils

• Expansion devices and metering systems

• Refrigeration piping and fittings

• Refrigerants and refrigerant properties

• Refrigerant recovery, charging, and handling

• Split air-conditioning systems

• Window air-conditioning units

• Packaged air-conditioning systems

• Ducted air-conditioning systems

• Basic central and chilled-water system concepts

• Air-handling units and fan systems

• Filters and air-cleaning components

• Fans, blowers, and motors

• Thermostats and temperature controls

• Contactors, relays, capacitors, and control components

• Basic air-conditioning electrical systems

• Electrical testing and measurement

• Use of multimeters, gauges, thermometers, and service tools

• Reading air-conditioning wiring diagrams

• Refrigeration pressure measurement

• Temperature and superheat/subcooling awareness

• Airflow and ventilation assessment

• Condensate drainage systems

• Drain pan inspection and maintenance

• Coil cleaning and maintenance

• Filter cleaning and replacement

• Refrigerant leak detection

• Leak testing and pressure testing

• Vacuum and evacuation procedures

• Refrigerant charging techniques

• Compressor inspection and testing

• Fan and motor inspection

• Capacitor testing

• Electrical connection inspection

• Thermostat and control troubleshooting

• Preventive maintenance planning

• Corrective maintenance procedures

• Fault diagnosis and troubleshooting

• Common cooling and airflow problems

• Noise and vibration troubleshooting

• Water leakage and condensate problems

• Poor cooling performance diagnosis

• High- and low-pressure fault awareness

• Energy-efficiency improvement

• System performance checks

• Maintenance records and service reporting

• Safe use of tools and service equipment

• Refrigerant and chemical safety

• Electrical safety

• Working-at-height awareness

• Personal protective equipment

• Environmental and refrigerant management

• Site housekeeping and professional service practices

Why Join This Program?

• Develop practical skills in air-conditioning servicing and maintenance.

• Understand the basic refrigeration cycle and how air-conditioning systems operate.

• Learn to identify major mechanical, refrigeration, and electrical components.

• Develop practical knowledge of split, window, packaged, and ducted systems.

• Learn professional procedures for routine air-conditioning servicing.

• Develop skills in cleaning coils, filters, fans, drains, and other system components.

• Understand refrigerant recovery, evacuation, leak testing, and charging procedures.

• Learn how to use pressure gauges, multimeters, thermometers, and other service tools.

• Develop skills in diagnosing common cooling, airflow, drainage, electrical, and control faults.

• Learn how to inspect compressors, motors, capacitors, controls, and electrical connections.

• Understand preventive maintenance practices that improve system reliability.

• Develop awareness of air-conditioning energy efficiency and performance optimization.

• Learn how to identify refrigerant leaks and basic causes of cooling loss.

• Understand the importance of correct airflow, temperature, and pressure measurements.

• Develop professional maintenance documentation and service-reporting skills.

• Improve safe handling of electrical systems, refrigerants, chemicals, and tools.

• Learn appropriate workplace and working-at-height safety practices.

• Prepare for practical responsibilities in HVAC service, building maintenance, facilities management, and air-conditioning operations.

Course Objective

The objective of the Certificate in Air-Conditioning Service & Maintenance Technology is to develop practical and technical competence in the servicing, inspection, troubleshooting, repair, and maintenance of common air-conditioning systems. The program aims to equip learners with the ability to understand refrigeration and air-conditioning principles, identify system components, carry out preventive maintenance, perform basic electrical and refrigeration checks, detect and address common faults, handle refrigerants and service equipment safely, evaluate system performance, and maintain reliable and energy-efficient air-conditioning operation.

Learning Outcomes

Upon successful completion of the program, learners will be able to:

• Explain the fundamental principles of refrigeration and air-conditioning.

• Describe the basic refrigeration cycle and heat-transfer process.

• Explain the relationship between refrigerant pressure and temperature.

• Identify major air-conditioning system components.

• Describe the function of compressors, condensers, evaporators, and expansion devices.

• Identify common refrigerants and understand basic refrigerant properties.

• Identify common air-conditioning tools and service equipment.

• Safely use basic gauges, multimeters, thermometers, and electrical test instruments.

• Read basic air-conditioning wiring diagrams and system schematics.

• Identify different types of residential and commercial air-conditioning systems.

• Explain the operation of split air-conditioning units.

• Explain the operation of window and packaged air-conditioning systems.

• Understand the basic operation of ducted and central air-conditioning systems.

• Identify air-handling, fan, blower, and airflow components.

• Inspect and maintain air filters and air-cleaning components.

• Inspect and clean evaporator and condenser coils.

• Inspect fans, blowers, motors, and associated components.

• Inspect condensate drain lines, drain pans, and drainage systems.

• Clean and maintain air-conditioning indoor and outdoor units.

• Inspect electrical connections and control components.

• Test basic components such as capacitors, contactors, relays, and motors.

• Check thermostat operation and basic control circuits.

• Measure system pressures using appropriate service gauges.

• Measure supply and return air temperatures.

• Assess basic airflow and ventilation conditions.

• Understand the purpose of superheat and subcooling measurements.

• Conduct basic refrigerant leak detection procedures.

• Carry out appropriate leak-testing procedures.

• Understand vacuum and system evacuation procedures.

• Carry out basic refrigerant charging procedures using appropriate equipment and approved practices.

• Explain the importance of correct refrigerant charge and system cleanliness.

• Inspect compressor operation and identify common compressor-related issues.

• Diagnose common cooling-performance problems.

• Diagnose common airflow and ventilation problems.

• Diagnose condensate drainage and water-leakage problems.

• Identify common electrical and control faults.

• Diagnose unusual noise, vibration, and abnormal operating conditions.

• Recognize common high-pressure and low-pressure operating conditions.

• Apply appropriate preventive maintenance procedures.

• Develop basic servicing and maintenance schedules.

• Carry out basic corrective maintenance activities under appropriate supervision.

• Evaluate basic air-conditioning system performance after servicing.

• Identify opportunities for improving system energy efficiency.

• Maintain service records, inspection reports, and maintenance documentation.

• Handle refrigerants, chemicals, tools, and service equipment safely.

• Apply appropriate electrical safety procedures.

• Apply working-at-height precautions where applicable.

• Use appropriate personal protective equipment.

• Apply environmentally responsible refrigerant handling and waste-management practices.

• Maintain clean, organized, and professional service work areas.

• Coordinate air-conditioning maintenance with facilities, electrical, plumbing, and other building-service activities.

• Complete air-conditioning service and maintenance activities in accordance with equipment requirements, approved procedures, safety practices, quality expectations, and applicable environmental requirements.