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Heating, Air Conditioning, And Refrigeration Technician (Diploma)

HVAC | American Trade School

The Heating, Air Conditioning and Refrigeration Technician program is recognized by the Air Conditioning Contractors of America, St. Louis Chapter, and the U.S. Department of Labor, Office of Apprenticeship, and the school is qualified to provide the related instruction for their registered apprenticeship programs.

Classes meet Monday through Thursday from 8:30am – 1:00pm or 6:00 – 10:30pm.


This program is designed to prepare the graduate with the theory and working knowledge in HVAC/R installation, maintenance, and service to go into the field at an entry level position.


The program consists of 60 weeks, 66 Quarter Credit Hours of theory and associated lab instruction in areas of HVAC/R, electrical theory, refrigeration, heat-pumps, residential and light commercial heating and air conditioning, residential and light commercial installation, boilers and piping..  



10 weeks - 11 Quarter Credit Hours
Electricity is found in every unit with which the HVAC/R servicer/installer will come in contact, and is a fundamental concept that must be understood thoroughly, even for entry-level positions. This term provides electrical theory and hands-on lab projects as applied in the HVAC/R industry. The focus is on safety, hand-tools, energy sources, meter use, circuits, ohms law, magnetic theory, transformers, single and three-phase electricity, wiring diagrams and troubleshooting.


Introduction to Refrigeration:

10 weeks - 11 Quarter Credit Hours
The refrigeration cycle and its components, which are the backbone of all air conditioning and refrigeration systems, are taught during this term. The theory and hands-on lab projects of refrigeration as it applies in the HVAC/R industry will be covered thoroughly. Focus is on safety, hand-tools, recovery, flaring, swaging, brazing, theory of temperature, matter and energy, refrigeration cycle, refrigerants, evacuations, charging systems, and domestic systems. The EPA Section 608 certification test is administered at the end of this term.


Air Conditioning:

10 weeks - 11 Quarter Credit Hours
Providing a comfortable environment in hot weather is another job of the HVAC/R technician. During this term, the focus will be on indoor air comfort, psychrometrics, and the refrigeration cycle. Also, installation, controls, typical operating conditions, troubleshooting, maintenance, air-to-air heat-pumps and geothermal heat-pumps will be covered.28 2011/03



10 weeks - 11 Quarter Credit Hours
People expect to be comfortable in cold weather and it is the job of the HVAC/R technician to install, maintain and service heating equipment. This term provides the theory and hand-on lab projects to help understand the different types of heating units, (gas, oil, electric, heat pumps, etc.) and the functions, maintenance, and repair of each type of system


Residential and Light Commercial Installation:

10 weeks - 11 Quarter Credit Hours
Many contractors specialize in installation of heating and air conditioning units. This term provides theory and hands-on lab projects to give students the fundamental skills necessary to be an HVAC installer. The focus is on load calculations, flue pipe and gas line sizing, sheet metal fabrication, installation and start-up procedures of HVAC equipment, as well as the operation and installation of indoor air quality products.


Boilers and Piping:

10 weeks – 11 Quarter Credit Hours
Boiler systems are a prominent heat source in almost every region in the United States. Technicians install and maintain residential and light commercial hydronic systems. This term provides the theory and hands-on projects necessary to expose the student to common practices in the area of boilers and piping. The focus is on the boiler’s main components, circulation pumps, system design, terminal units, pipe sizing, sizing fittings, system friction, sizing the circulator pump, accessories, controls, preventive maintenance, and troubleshooting.

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Saint Ann MO 63074

Phone: (314) 423-1900

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