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Wake Technical Community College · Courses

AHR

27 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 Refrigeration2

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. Class Lab Credits: 6 Clinic Credits: 0

Subject
AHR
Credits (min)
2
Credits (max)
2
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
None
AHR 111HVACR Electricity2

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. Class Lab Credits: 2 Clinic Credits: 0

Subject
AHR
Credits (min)
2
Credits (max)
2
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
None
AHR 112Heating Technology2

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. Class Lab Credits: 4 Clinic Credits: 0

Subject
AHR
Credits (min)
2
Credits (max)
2
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
None
AHR 113Comfort Cooling2

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. Class Lab Credits: 4 Clinic Credits: 0

Subject
AHR
Credits (min)
2
Credits (max)
2
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
None
AHR 113CCOMFORT COOLING2

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 speci cations, and test instruments to determine proper system operation. Requisites:

Subject
AHR
Credits (min)
2
Credits (max)
2
Type
course
Edition
2026
Source
www.waketech.edu
AHR 113LCOMFORT COOLING2

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 speci cations, and test instruments to determine proper system operation. Requisites:

Subject
AHR
Credits (min)
2
Credits (max)
2
Type
course
Edition
2026
Source
www.waketech.edu
AHR 114Heat Pump Technology2

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. Class Lab Credits: 4 Clinic Credits: 0

Subject
AHR
Credits (min)
2
Credits (max)
2
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
Take One: AHR-110 or AHR-113
AHR 115Refrigeration Systems2

NEW. 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. Class Lab Credits: 4 Clinic Credits: 0

Subject
AHR
Credits (min)
2
Credits (max)
2
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
Take AHR-110
AHR 120HVACR Maintenance1

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. Class Lab Credits: 3 Clinic Credits: 0

Subject
AHR
Credits (min)
1
Credits (max)
1
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
None
AHR 125HVACR Electronics2

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. Class Lab Credits: 2 Clinic Credits: 0

Subject
AHR
Credits (min)
2
Credits (max)
2
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
Take One: AHR-111, ELC-111, or ELC-112
AHR 130HVAC Controls3
Subject
AHR
Credits (min)
3
Credits (max)
3
Type
course
Edition
2015-2016
Source
www.waketech.edu
AHR 133HVAC Servicing2

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. Class Lab Credits: 6 Clinic Credits: 0

Subject
AHR
Credits (min)
2
Credits (max)
2
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
Take AHR-110, AHR-112, or AHR-113
AHR 140All-Weather Systems1

This course covers the principles of combination heating and cooling systems including gas-electric, all-electric, and oil-electric systems. Topics include PTAC's and package and split-system units. Upon completion, students should be able to understand systems performance and perform routine maintenance procedures. Class Lab Credits: 3 Clinic Credits: 0

Subject
AHR
Credits (min)
1
Credits (max)
1
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
Take AHR-112, AHR-113, or AHR-114
AHR 151HVAC Duct Systems I 1 3 02

Requisites: 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 1 0 0 1 Requisites: 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 1 0 0 1 Requisites: 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 2 2 0 3 Requisites: 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-213 HVACR Building Code 1 2 0 2 Requisites: 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 1 3 0 2 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. AHR-225 Commercial System Design 2 3 0 3 This course covers the principles of designing heating and cooling systems for commercial buildings. Emphasis is placed on commercial heat loss/gain calculations, applied psychometrics, air-flow calculations, air distribution system 2017-2018 Catalog Volume 39 | Wake Technical Community College Last updated 6/20/2017 197

Subject
AHR
Credits (min)
2
Credits (max)
2
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
Take AHR-111(S23420) ELC-111 or ELC-112(S23481); Take previously. Required. Take AHR-211(S10410); Take previously. Required.
AHR 160Refrigerant Certification1

NEW. 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. Class Lab Credits: 0 Clinic Credits: 0

Subject
AHR
Credits (min)
1
Credits (max)
1
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
Take AHR-110 AHR-113 or AHR-120;
AHR 180HVACR Customer Relations1

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. Class Lab Credits: 0 Clinic Credits: 0

Subject
AHR
Credits (min)
1
Credits (max)
1
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
None
AHR 210Residential Building Code2

Graduation Requirements .................................... 40 Credit Hours Air Conditioning, Heating, and Refrigeration Technology Certificate - C35100B Topics include mechanical refrigeration, heating and cooling theory, electricity, controls, and safety. The certificate program covers air conditioning, furnaces, tools, and instruments. Certificate graduates should be able to assist in the start up, preventive maintenance, service, repair, and/or installation of residential systems.

Subject
AHR
Credits (min)
2
Credits (max)
2
Type
course
Edition
2012-2013
Source
www.waketech.edu
AHR 211Residential System Design2

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. Class Lab Credits: 2 Clinic Credits: 0

Subject
AHR
Credits (min)
2
Credits (max)
2
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
None
AHR 212Advanced Comfort Systems2

This course covers advanced comfort systems for residential and commercial applications. Emphasis is placed on the application, maintenance, and servicing of residential and commercial advanced comfort systems. Upon completion, students should be able to test, analyze, troubleshoot, and service multiple types of residential and commercial advanced comfort systems. Class Lab Credits: 6 Clinic Credits: 0

Subject
AHR
Credits (min)
2
Credits (max)
2
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
Take AHR-114
AHR 213HVACR Building Code1

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. Class Lab Credits: 2 Clinic Credits: 0

Subject
AHR
Credits (min)
1
Credits (max)
1
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
None
AHR 215Commercial HVAC Controls1

This course introduces HVAC control systems used in commercial applications. Topics include electric/electronic control systems, direct digital control (DDC) controlled devices, 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 regarding sequence of operation and safety. Class Lab Credits: 3 Clinic Credits: 0

Subject
AHR
Credits (min)
1
Credits (max)
1
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
Take AHR-111, ELC-111, or ELC-112
AHR 225COMMERCIAL SYSTEM DESIGN3

This course covers the principles of designing heating and cooling systems for commercial buildings. Emphasis is placed on commercial heat loss/gain calculations, applied psychometrics, air- ow calculations, air distribution system design, and equipment selection. Upon completion,

Subject
AHR
Credits (min)
3
Credits (max)
3
Type
course
Edition
2026
Source
www.waketech.edu
AHR 235Refrigeration Design2

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 service procedures on a commercial refrigeration system. Class Lab Credits: 2 Clinic Credits: 0

Subject
AHR
Credits (min)
2
Credits (max)
2
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
Take AHR-110
AHR 240Hydronic Heating1

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. Class Lab Credits: 3 Clinic Credits: 0

Subject
AHR
Credits (min)
1
Credits (max)
1
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
Take AHR-112
AHR 245Chiller Systems1

This course introduces the fundamentals of liquid chilling equipment. Topics include characteristics of water, principles of water chilling, the chiller, the refrigerant, water and piping circuits, freeze prevention, purging, and equipment flexibility. Upon completion, students should be able to describe the components, controls, and overall operation of liquid chilling equipment and perform basic maintenance tasks. Class Lab Credits: 3 Clinic Credits: 0

Subject
AHR
Credits (min)
1
Credits (max)
1
Credit unit
Credits
Type
course
Edition
2026
Source
www.waketech.edu
Prerequisite
Take AHR-110
AHR 250HVAC System Diagnostics2
Subject
AHR
Credits (min)
2
Credits (max)
2
Type
course
Edition
2026
Source
www.waketech.edu
AHR 263Energy Management2

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. Course Prerequisites: Take One: AHR-125 or AHR-215 Total Credits:2 Class Credits:1 Lab Credits:3 Clinic Credits:0

Subject
AHR
Credits (min)
2
Credits (max)
2
Type
course
Edition
2026
Source
www.waketech.edu

Source: Wake Technical Community College's catalog, linked per course · table learning_unit · CourseShelf publish 61