Air Conditioning Course

Lesson 1 • Refrigerant Regulations and Certification

Explains technician certification requirements, refrigerant purchase rules, and leak reporting obligations. Regulatory compliance protects the environment and the technician's license.

Lesson 2 • Personal and Job-Site Safety

Addresses PPE requirements, confined space awareness, and fall protection for rooftop units. Safety protocols reduce injury risk and meet regulatory requirements.

Lesson 3 • Brazing and Soldering Copper Tubing

Teaches nitrogen purging, torch selection, and proper brazing technique for leak-free joints. Quality brazing is foundational to all refrigerant piping work.

Lesson 4 • Refrigerant Handling Equipment

Covers manifold gauge sets, recovery machines, vacuum pumps, and charging scales. Proper equipment use ensures refrigerant containment and system integrity.

Lesson 1 • The Refrigeration Cycle Explained

Traces refrigerant flow through the four-stage vapour-compression cycle. Connects thermodynamic principles to real system operation.

Lesson 2 • Refrigerants: Properties and Selection

Examines refrigerant classifications, pressure-temperature relationships, and environmental ratings. Guides proper refrigerant selection for different system applications.

Lesson 3 • Psychrometrics and Air Properties

Introduces humidity, dew point, wet-bulb temperature, and the psychrometric chart. Explains how air properties determine system sizing and performance.

Lesson 4 • Core System Components Overview

Identifies compressors, condensers, evaporators, and expansion devices and their roles. Provides component literacy needed for all subsequent chapters.

Lesson 1 • Electrical Safety Practices

Covers lockout/tagout procedures, personal protective equipment, and safe voltage thresholds. Safety compliance is mandatory before any hands-on electrical work.

Lesson 2 • Reading Wiring Diagrams and Schematics

Teaches ladder diagrams, pictorial schematics, and component symbols. Diagram literacy enables accurate fault tracing in all system types.

Lesson 3 • Motors and Motor Controls

Examines single-phase and three-phase motors, capacitors, and contactors used in AC systems. Motor knowledge is critical for diagnosing compressor and fan failures.

Lesson 4 • Using Electrical Test Instruments

Demonstrates multimeter, clamp meter, and megohmmeter use for voltage, current, and resistance testing. Accurate measurement is the basis of all electrical diagnostics.

Lesson 1 • Indoor Unit Placement and Mounting

Covers air handler location, clearance requirements, and vibration isolation techniques. Proper placement ensures airflow efficiency and serviceability.

Lesson 2 • Refrigerant Line Set Preparation

Demonstrates cutting, flaring, insulating, and pressure-testing copper line sets. Leak-free line sets are critical to system efficiency and refrigerant containment.

Lesson 3 • System Evacuation and Startup

Covers deep vacuum procedures, micron gauge use, and refrigerant charging at startup. Proper evacuation removes moisture that causes acid formation and compressor failure.

Lesson 4 • Load Calculation and Equipment Sizing

Applies Manual J methodology to calculate heating and cooling loads for residential spaces. Correct sizing prevents short-cycling, humidity problems, and energy waste.

Lesson 1 • Airflow Measurement and Verification

Uses flow hoods, anemometers, and manometers to verify design airflow at each register. Measurement data confirms system performance and guides balancing adjustments.

Lesson 2 • Duct System Types and Materials

Compares sheet metal, flex duct, and duct board in terms of cost, efficiency, and application. Material selection affects system static pressure and long-term performance.

Lesson 3 • Duct Sealing and Insulation

Covers mastic sealant, foil tape, and insulation R-value requirements for duct systems. Sealed and insulated ducts reduce energy loss by up to 30 percent.

Lesson 4 • Duct Sizing Using Manual D

Applies friction rate and velocity methods to size supply and return ducts. Correct sizing prevents noise, pressure imbalance, and comfort complaints.

Lesson 1 • Safety and Limit Controls

Explains high-pressure, low-pressure, freeze, and overload controls that protect equipment. Understanding safety controls is essential for accurate fault diagnosis.

Lesson 2 • Thermostat Types and Wiring

Covers low-voltage wiring, terminal designations, and heat/cool staging configurations. Correct thermostat wiring is the starting point for all control system work.

Lesson 3 • Building Automation System Basics

Introduces BAS architecture, communication protocols, and setpoint management for commercial systems. BAS knowledge prepares technicians for light commercial service calls.

Lesson 4 • Control Boards and Sequencers

Covers furnace control boards, sequencers, and integrated system controllers. Board-level diagnosis reduces unnecessary part replacement and service time.

Lesson 1 • Refrigerant System Diagnostics

Uses superheat, subcooling, and pressure readings to diagnose refrigerant faults. Accurate refrigerant diagnosis prevents unnecessary refrigerant addition or removal.

Lesson 2 • Systematic Diagnostic Methodology

Introduces the five-step diagnostic process: gather information, identify symptoms, isolate cause, repair, and verify. A structured approach prevents misdiagnosis and repeat failures.

Lesson 3 • Compressor Diagnostics

Tests compressor efficiency, valve integrity, and motor windings to determine serviceability. Compressor diagnosis prevents costly replacement of a functional unit.

Lesson 4 • Electrical Fault Diagnosis

Traces open circuits, short circuits, ground faults, and failed components using test instruments. Electrical diagnosis skills reduce service time and prevent equipment damage.

Lesson 1 • Heating Season Maintenance Tasks

Covers heat exchanger inspection, burner cleaning, flue venting, and safety control testing. Heating maintenance prevents carbon monoxide hazards and equipment failures.

Lesson 2 • Coil and Drain Cleaning Techniques

Demonstrates chemical coil cleaners, pressure washing, and condensate drain flushing methods. Clean coils and drains prevent efficiency loss, mold growth, and water damage.

Lesson 3 • Service Documentation and Reporting

Teaches work order completion, refrigerant tracking logs, and customer report writing. Accurate documentation supports warranty claims, regulatory compliance, and liability protection.

Lesson 4 • Maintenance Planning and Scheduling

Covers maintenance agreement structures, seasonal timing, and priority task sequencing. Planned maintenance reduces emergency calls and builds recurring revenue.