|HVAC Technician Online (A Career Builder Course)
Contact Hours: 400
|There is a shortage of trained technicians because the older techs are retiring at a much faster rate than new technicians are entering the field. This creates an ever increasing need for HVAC technicians for at least the next 10 years. Think about this - HVAC jobs cannot be shipped overseas and are nearly recession proof... you will never be out of work.
The HVAC Technician Course prepares you for entry-level employment as an HVAC Technician. HVAC Technicians work as mechanics and/or installers. The HVAC technician training includes theory, electrical, and diagnostics covering commercial refrigeration, gas heat, heat pumps, and air conditioning.
This course includes hundreds of videos, supplementary information, and simulations not found anywhere else. After completing this course, you will have the knowledge you need to land your first job in the HVAC career field and be on your way to earning a living that will support you and your family.
The HVAC jobs market is growing 21% faster than the national average... you'll never be out of work.
How Does This Course Work?
- Reading assignments are short. 3-5 pages per assignment... easy evening read.
- Videos and supplementary information reinforce each module of instruction.
- Post questions and have discussions in the online classroom forum.
- Attend or review our live training events.
- Request live one-on-one training for areas where you need help.
- Apply your knowledge with our online HVAC simulation.
- Test your knowledge with end of module exams.
Please note: Course of study may be completed earlier than indicated.
|Upon successful completion, The HVAC Technician Course prepares you for entry-level employment as an HVAC Technician. HVAC Technicians work as mechanics and/or installers.
|For assessment purposes, this course of study contains the following:
- Expert Instructor Support
- Visual Demonstrations & Multimedia Presentations
- End of Module Exams
|Module 1: Heat, Temperature and Pressure
This unit covers temperature, methods of measuring and transferring heat, and discussions pertaining to molecular motion, sensible heat, latent heat, and specific heat. It also discusses atmospheric pressure and test instruments such as gauges used to measure pressure.
Module 2: Matter and Energy
This unit defines matter, mass, density, specific gravity, and specific volume. Gas laws, including Boyle’s law, Charles’ law, the general law of perfect gas, and Dalton’s law, are stated. The broad subject of energy is covered, as well as energy in heat and in magnetism. The measurement of energy in horsepower, watts, and British thermal units is discussed
Module 3: Refrigeration and Refrigerants
This unit includes a history of refrigeration and a basic discussion of the refrigeration process. Using water and refrigerants as examples, the temperature/pressure relationship is discussed and is followed by a description of the four major refrigeration components: the evaporator, compressor, condenser, and metering device
Module 4: General Safety Practices
Safety is discussed in great detail throughout the book, but this unit provides safety precautions necessary when working with pressure vessels and piping, electrical hazards, heat, cold, mechanical equipment, heavy objects, and chemicals.
Module 5: Tubing and Piping
This unit covers basic piping operations and techniques, including cutting, bending, soldering, brazing, swaging, and flaring. General information regarding tubing and piping materials, such as types, sizes, insulation, and line sets, and environmental issues is also provided. Soldering and brazing procedures are presented in detail, along with procedures for properly setting up and storing torches used for air-acetylene and oxyacetylene applications.
Module 6: Leak Detection, Evacuation, and System Cleanup
Module 6 presents information on leak detection, system cleanup, and system evacuation. This unit includes the purpose and theory of evacuation and covers as well measuring the vacuum, the vacuum pump, deep vacuum, multiple evacuations, leak detection while in a vacuum, and removing moisture with a vacuum. It also covers general evacuation procedures, systems with Schrader valves, gauge manifold hoses, system valves, using dry nitrogen, and refrigerant recovery and recycling.
Module 7: System Charging
Information on charging refrigeration systems is provided in this unit, including vapor and liquid refrigerant charging, weighing refrigerant, and the use of charging devices.
Module 7A: Recovery, Recycling, Reclaiming, and Retrofitting
This unit discusses refrigerants and the environment; CFC, HCFC, and HFC refrigerants; refrigerant blends; EPA regulations; reasons for recovery and recovery methods; recycling; reclaiming; retrofitting; technician certification; and mechanical recovery equipment
Module 8: Basic Electricity and Magnetism
The structure of matter, the movement of electrons, conductors, insulators, direct and alternating current, and electrical units of measurement are covered. Also included is a description of the electrical circuit, making electrical measurements, Ohm’s law, series and parallel circuits, electrical power, magnetic fields, inductance, transformers, capacitance, impedance, sine waves, and using electrical measuring instruments. The unit covers wire sizes, circuit protection devices, and semiconductors or solid-state components.
Module 9: Introduction to Automatic Controls
This unit discusses types of automatic controls, devices that respond to thermal change, the bimetal device, control by fluid expansion, the thermocouple, and electronic sensing devices.
Module 10: Automatic Control Components and Applications
Space temperature controls (low and high voltage), sensing the temperature of solids, pressure-sensing devices, oil pressure safety controls, air pressure controls, devices that control fluid flow, and maintenance of mechanical and electromechanical controls are topics covered in this unit.
Module 11: Troubleshooting Basic Controls
This unit describes procedures for troubleshooting basic and complex circuits, thermostats, and high-voltage circuits controlled by thermostats. It also describes procedures for measuring amperage and voltage in low-voltage circuits and discusses pictorial and line diagrams. At the end of the unit there are examples of typical service technician calls.
Module 12: Types of Electric Motors
Starting and running components and characteristics, motor speeds, and power supplies are discussed in this unit. Specific topics include single- and split-phase motors; the centrifugal switch; electronic relays; capacitor-start motors; capacitor-start, capacitor-run motors; permanent split-capacitor motors; shaded-pole motors; three-phase motors; single-phase hermetic motors; the potential and current relays; the positive-temperature-coefficient start device; two-speed motors; three-phase motors; and variable-speed motors. Also included are DC converters, inverters, and ECM motors.
Module 13: Application of Motors and Motor Controls
Included in this unit is a discussion of various characteristics and designs of motors for particular applications. Included are electrical specifications, insulation, bearings, mountings, and motor drives.
Module 14: Troubleshooting Electric Motors
This unit discusses mechanical and electrical electric motor troubleshooting, including drive assemblies, belt tension, pulley alignment, open and shorted windings, shorts to ground, capacitor problems, wiring and connectors, and hermetic motors. Six typical service technician calls relating to problems with electric motors are described. A diagnostic chart for open-type electric motors is also included.
Module 15: Typical Operating Conditions
This unit describes the typical operating conditions for the various components of standard and high- efficiency air-conditioning systems. Equipment efficiency ratings— EER and SEER—are described, as are electrical operating conditions and ratings, including the power supply, compressor running amperage, full-load current, current draw, and the two-speed compressor.
Module 16: Troubleshooting
This Module covers mechanical and electrical troubleshooting for air-conditioning systems. Use of the gauge manifold, taking temperature readings, and charging units with refrigerant are included under mechanical troubleshooting. Compressor overload problems, compressor electrical checks, and troubleshooting circuit electrical protectors are covered under electrical troubleshooting. Also included are twelve typical service technician calls, a section on preventive maintenance, and HVAC/R golden rules for air-conditioning service.
Module 17: Air Source Heat Pumps
This unit begins with a discussion of reverse-cycle refrigeration and the four-way valve. Types of heat pumps are covered, such as ground/water-to-air (ground loop and well water), solar-assisted, and air-to-air. Refrigerant line identification, types of metering devices, and liquidline accessories are also covered, followed by discussion of the application of the air-to-air heat pump, auxiliary heat, balance point, and the coefficient of performance and controls. Defrost is discussed in detail.
Module 18: Electric Heat
Included is a discussion of such heating devices and furnaces as portable electric heaters, radiant heating panels, electric baseboard heating, unit heaters, electric hydronic boilers, and central forced-air electric furnaces. The unit covers the automatic control of forced-air electric furnaces, including multiple stages, thermostats, low-voltage circuits, and fan motor circuits, and airflow for these furnaces, including the sensible heat formula.
Module 19: Gas Heat
This unit includes a discussion on types of gas furnaces, gas fuels, combustion, and components in a gas furnace, safety devices, venting, piping, and calculating the proper airflow across the heat exchangers. There are several wiring diagrams and several pages of troubleshooting procedures. High-efficiency furnaces are also discussed, including direct-spark ignition, hot surface ignition, pulse, and condensing furnaces