Air Conditioning, Heating and Refrigeration

Courses

AHR 110: Intro to Refrigeration

Program
Air Conditioning, Heating and Refrigeration
Credits 5 Class Hours 2 Lab Hours 6
Clinical Experience Hours
0
This course introduces the basic refrigeration process used in mechanical refrigeration and air conditioning systems. Topics include terminology, safety, and identification and function of components; refrigeration cycle; and tools and instrumentation used in mechanical refrigeration systems. Upon completion, students should be able to identify refrigeration systems and components, explain the refrigeration process, and use the tools and instrumentation of the trade.

AHR 111: HVACR Electricity

Program
Air Conditioning, Heating and Refrigeration
Credits 3 Class Hours 2 Lab Hours 2
Clinical Experience Hours
0
This course introduces electricity as it applies to HVACR equipment. Emphasis is placed on power sources, interaction of electrical components, wiring of simple circuits, and the use of electrical test equipment. Upon completion, students should be able to demonstrate good wiring practices and the ability to read simple wiring diagrams.

AHR 112: Heating Technology

Program
Air Conditioning, Heating and Refrigeration
Credits 4 Class Hours 2 Lab Hours 4
Clinical Experience Hours
0
This course covers the fundamentals of heating including oil, gas, and electric heating systems. Topics include safety, tools and instrumentation, system operating characteristics, installation techniques, efficiency testing, electrical power, and control systems. Upon completion, students should be able to explain the basic oil, gas, and electrical heating systems and describe the major components of a heating system.

AHR 113: Comfort Cooling

Program
Air Conditioning, Heating and Refrigeration
Credits 4 Class Hours 2 Lab Hours 4
Clinical Experience Hours
0
This course covers the installation procedures, system operations, and maintenance of residential and light commercial comfort cooling systems. Topics include terminology, component operation, and testing and repair of equipment used to control and produce assured comfort levels. Upon completion, students should be able to use psychrometrics, manufacturer specifications, and test instruments to determine proper system operation.

AHR 114: Heat Pump Technology

Program
Air Conditioning, Heating and Refrigeration
Credits 4 Class Hours 2 Lab Hours 4
Clinical Experience Hours
0
This course covers the principles of air source and water source heat pumps. Emphasis is placed on safety, modes of operation, defrost systems, refrigerant charging, and system performance. Upon completion, students should be able to understand and analyze system performance and perform routine service procedures.
State Prerequisites

AHR 110 or AHR 113

AHR 120: HVACR Maintenance

Program
Air Conditioning, Heating and Refrigeration
Credits 2 Class Hours 1 Lab Hours 3
Clinical Experience Hours
0
This course introduces the basic principles of industrial air conditioning and heating systems. Emphasis is placed on preventive maintenance procedures for heating and cooling equipment and related components. Upon completion, students should be able to perform routine preventive maintenance tasks, maintain records, and assist in routine equipment repairs.

AHR 133: HVAC Servicing

Program
Air Conditioning, Heating and Refrigeration
Credits 4 Class Hours 2 Lab Hours 6
Clinical Experience Hours
0

The course covers the maintenance and servicing of HVAC equipment. Topics include testing, adjusting, maintaining, and troubleshooting HVAC equipment and record keeping. Upon completion, students should be able to adjust, maintain, and service HVAC equipment.

State Corequisites

AHR 112 or AHR 113

AHR 151: HVAC Duct Systems I

Program
Air Conditioning, Heating and Refrigeration
Credits 2 Class Hours 1 Lab Hours 3
Clinical Experience Hours
0
This course introduces the techniques used to lay out and fabricate duct work commonly found in HVAC systems. Emphasis is placed on the skills required to fabricate duct work. Upon completion, students should be able to lay out and fabricate simple duct work.

AHR 160: Refrigerant Certification

Program
Air Conditioning, Heating and Refrigeration
Credits 1 Class Hours 1 Lab Hours 0
Clinical Experience Hours
0
This course covers the requirements for the EPA certification examinations. Topics include small appliances, high pressure systems, and low pressure systems. Upon completion, students should be able to demonstrate knowledge of refrigerants and be prepared for the EPA certification examinations.

AHR 180: HVACR Customer Relations

Program
Air Conditioning, Heating and Refrigeration
Credits 1 Class Hours 1 Lab Hours 0
Clinical Experience Hours
0
This course introduces common business and customer relation practices that may be encountered in HVACR. Topics include business practices, appearance of self and vehicle, ways of handling customer complaints, invoices, telephone communications, and warranties. Upon completion, students should be able to present themselves to customers in a professional manner, understand how the business operates, complete invoices, and handle complaints.

AHR 211: Residential System Design

Program
Air Conditioning, Heating and Refrigeration
Credits 3 Class Hours 2 Lab Hours 2
Clinical Experience Hours
0
This course introduces the principles and concepts of conventional residential heating and cooling system design. Topics include heating and cooling load estimating, basic psychrometrics, equipment selection, duct system selection, and system design. Upon completion, students should be able to design a basic residential heating and cooling system.

AHR 212: Advanced Comfort Systems

Program
Air Conditioning, Heating and Refrigeration
Credits 4 Class Hours 2 Lab Hours 6
Clinical Experience Hours
0
This course covers water-cooled comfort systems, water-source/geothermal heat pumps, and high efficiency heat pump systems including variable speed drives and controls. Emphasis is placed on the application, installation, and servicing of water-source systems and the mechanical and electronic control components of advanced comfort systems. Upon completion, students should be able to test, analyze, and troubleshoot water-cooled comfort systems, water- source/geothermal heat pumps, and high efficiency heat pumps.
State Prerequisite Courses
AHR 114

AHR 213: HVACR Building Code

Program
Air Conditioning, Heating and Refrigeration
Credits 2 Class Hours 1 Lab Hours 2
Clinical Experience Hours
0
This course covers the North Carolina codes that are applicable to the design and installation of HVACR systems. Topics include current North Carolina codes as applied to HVACR design, service, and installation. Upon completion, students should be able to demonstrate the correct usage of North Carolina codes that apply to specific areas of the HVACR trade.

AHR 215: Commercial HVAC Controls

Program
Air Conditioning, Heating and Refrigeration
Credits 2 Class Hours 1 Lab Hours 3
Clinical Experience Hours
0

This course introduces HVAC control systems used in commercial applications. Topics include electric/electronic control systems, pneumatic control systems, DDC temperature sensors, humidity sensors, pressure sensors, wiring, controllers, actuators, and controlled devices. Upon completion, students should be able to verify or correct the performance of common control systems with regard to sequence of operation and safety.

State Prerequisites

AHR 111