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Knowledge • Skills • Abilities
Davidson-Davie Community College · Courses

AHR

10 courses with the subject AHR, each shown exactly as we captured it from the college's catalog, with every element we hold. Where the wording looks broken, that is our reading of the catalog, not the college's text.

AHR 110Introduction to Refrigeration5.00

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. Semester Offered: Fall

Subject
AHR
Credits (min)
5
Credits (max)
5
Credit unit
Credit Hours
Type
course
Edition
2026-2027 General Catalog
Catalog
2026-2027 General Catalog
Source
catalog.davidsondavie.edu
AHR 112Heating Technology4.00

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. Semester Offered: Fall

Subject
AHR
Credits (min)
4
Credits (max)
4
Credit unit
Hours
Type
course
Edition
2026-2027 General Catalog
Catalog
2026-2027 General Catalog
Source
catalog.davidsondavie.edu
AHR 113Comfort Cooling4.00

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. Semester Offered: Spring

Subject
AHR
Credits (min)
4
Credits (max)
4
Credit unit
Hours
Type
course
Edition
2026-2027 General Catalog
Catalog
2026-2027 General Catalog
Source
catalog.davidsondavie.edu
AHR 114Heat Pump Technology4.00

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. Semester Offered: Spring

Subject
AHR
Credits (min)
4
Credits (max)
4
Credit unit
Hours
Type
course
Edition
2026-2027 General Catalog
Catalog
2026-2027 General Catalog
Source
catalog.davidsondavie.edu
AHR 151HVAC Duct Systems I2.00

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. Semester Offered: Spring

Subject
AHR
Credits (min)
2
Credits (max)
2
Credit unit
Credit Hours
Type
course
Edition
2026-2027 General Catalog
Catalog
2026-2027 General Catalog
Source
catalog.davidsondavie.edu
AHR 160Refrigerant Certification1.00

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. Semester Offered: Fall

Subject
AHR
Credits (min)
1
Credits (max)
1
Credit unit
Hours
Type
course
Edition
2026-2027 General Catalog
Catalog
2026-2027 General Catalog
Source
catalog.davidsondavie.edu
AHR 180AHVACR Customer Relations Lab1.00

This course provides a laboratory setting for 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
Credit unit
Credit Hours
Type
course
Edition
2026-2027 General Catalog
Catalog
2026-2027 General Catalog
Source
catalog.davidsondavie.edu
AHR 211Residential System Design3.00

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. Semester Offered: Spring

Subject
AHR
Credits (min)
3
Credits (max)
3
Credit unit
Credit Hours
Type
course
Edition
2026-2027 General Catalog
Catalog
2026-2027 General Catalog
Source
catalog.davidsondavie.edu
AHR 213HVACR Building Code2.00

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. Semester Offered: Spring

Subject
AHR
Credits (min)
2
Credits (max)
2
Credit unit
Hours
Type
course
Edition
2026-2027 General Catalog
Catalog
2026-2027 General Catalog
Source
catalog.davidsondavie.edu
AHR 255Indoor Air Quality2.00

This course introduces the techniques of assessing and maintaining the quality of the indoor environment in residential and commercial structures. Topics include handling and investigating complaints, filter selection, humidity control, testing for sources of carbon monoxide, impact of mechanical ventilation, and building and duct pressures. Upon completion, students should be able to assist in investigating and solving common indoor air quality problems. Semester Offered: Fall

Subject
AHR
Credits (min)
2
Credits (max)
2
Credit unit
Hours
Type
course
Edition
2026-2027 General Catalog
Catalog
2026-2027 General Catalog
Source
catalog.davidsondavie.edu

Source: Davidson-Davie Community College's catalog, linked per course · table learning_unit · CourseShelf publish 61