AHR

Subject

AHR

Credits (min)

5

Credits (max)

5

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Subject

AHR

Credits (min)

3

Credits (max)

3

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Class: 2 | Lab: 4 | Work: 0 | Credit: 4 This course covers the fundamentals of heating systems. Topics include safety, instrumentation, system operating, efficiency testing, electrical power, and control systems. Upon completion, students should be able to perform maintenance, service, and testing for major components of a heating system.

Subject

AHR

Credits (min)

2

Credits (max)

2

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

189

Subject

AHR

Credits (min)

2

Credits (max)

2

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Prerequisite

None

Class: 2 | Lab: 4 | Work: 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.

Subject

AHR

Credits (min)

4

Credits (max)

4

Credit unit

Credit

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Prerequisite

AHR 110 or AHR 113

Corequisite

None

Class: 2 | Lab: 4 | Work: 0 | Credit: 4 This course introduces refrigeration systems and applications. Topics include defrost methods, safety and operational control, refrigerant piping, refrigerant recovery and charging, and leak testing. Upon completion, students should be able to assist in installing and testing refrigeration systems and perform simple repairs.

Subject

AHR

Credits (min)

2

Credits (max)

2

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Class: 2 | Lab: 2 | Work: 0 | Credit: 3 This course introduces the common electronic control components in HVACR systems. Emphasis is placed on identifying electronic components and their functions in HVACR systems and motor- driven control circuits. Upon completion, students should be able to identify components, describe control circuitry and functions, and use test instruments to measure electronic circuit values and identify malfunctions.

Subject

AHR

Credits (min)

2

Credits (max)

2

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Class: 2 | Lab: 2 | Work: 0 | This course covers the types of controls found in residential and commercial comfort systems. Topics include electrical and electronic controls, control schematics and diagrams, test instruments, and analysis and troubleshooting of electrical systems. Upon completion, students should be able to diagnose and repair common residential and commercial comfort system controls.

Subject

AHR

Credits (min)

3

Credits (max)

3

Credit unit

Credit

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Prerequisite

AHR 111, ELC 111, or ELC 112

Corequisite

None

Class: 2 | Lab: 6 | Work: 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.

Subject

AHR

Credits (min)

4

Credits (max)

4

Credit unit

Credit

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Prerequisite

None

Corequisite

AHR 110, AHR 112, or AHR 113

Class: 1 | Lab: 3 | Work: 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.

Subject

AHR

Credits (min)

2

Credits (max)

2

Credit unit

Credit

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Prerequisite

None

Corequisite

None

Class: 1 | Lab: 0 | Work: 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.

Subject

AHR

Credits (min)

1

Credits (max)

1

Credit unit

Credit

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Prerequisite

None

Corequisite

AHR 110, AHR 113, or AHR 120

Class: 1 | Lab: 0 | Work: 0 | Credit: 1 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.

Subject

AHR

Credits (min)

1

Credits (max)

1

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Class: 2 | Lab: 2 | Work: 0 | This course introduces the principles and concepts of conventional residential heating and cooling system design. Emphasis is placed on using tables, worksheets, and/or appropriate software to calculate a residential load based on Air Conditioning Contractors of America (ACCA) standards. Upon completion of the course students should be able to calculate a heating and cooling residential load.

Subject

AHR

Credits (min)

3

Credits (max)

3

Credit unit

Credit

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Prerequisite

None

Corequisite

None

206

Subject

AHR

Credits (min)

2

Credits (max)

2

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Prerequisite

AHR 114

Class: 1 | Lab: 2 | Work: 0 | This course covers the North Carolina codes that are applicable to the design of HVACR systems. Topics include current North Carolina codes as applied to HVACR design and service industries. Upon completion, students should be able to demonstrate the correct usage of North Carolina codes that apply to specific areas of the HVACR trade.

Subject

AHR

Credits (min)

2

Credits (max)

2

Credit unit

Credit

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Prerequisite

None

Corequisite

None

Class: 2 | Lab: 2 | Work: 0 | This course covers the principles of commercial refrigeration system operation and design. Topics include walk-in coolers, walk-in freezers, system components, load calculations, equipment selection, defrost systems, refrigerant line sizing, and electric controls. Upon completion, students should be able to design, adjust, and perform routine procedures on a commercial refrigeration system.

Subject

AHR

Credits (min)

3

Credits (max)

3

Credit unit

Credit

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Prerequisite

AHR 110

Corequisite

None

Class: 1 | Lab: 3 | Work: 0 | This course covers the accepted procedures for proper design, installation, and balance of hydronic heating systems for residential or commercial buildings. Topics include heating equipment; pump, terminal unit, and accessory selection; piping system selection and design; and pipe sizing and troubleshooting. Upon completion, students should be able to assist with the proper design, installation, and balance of typical hydronic systems.

Subject

AHR

Credits (min)

2

Credits (max)

2

Credit unit

Credit

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Prerequisite

AHR 112

Corequisite

None

Class: 1 | Lab: 3 | Work: 0 | This course covers building automation computer programming as currently used in energy management. Topics include night setback, duty cycling, synchronization, schedule optimization, and anticipatory temperature control. Upon completion, students should be able to write programs utilizing the above topics and connect computer systems to HVAC systems.

Subject

AHR

Credits (min)

2

Credits (max)

2

Credit unit

Credit

Type

course

Edition

2026-2027

Source

www.wilsoncc.edu

Prerequisite

AHR 125 or AHR 215

Corequisite

None