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Heating and Air Conditioning


This certificate prepares students to fill careers as service technicians in the field of heating and air conditioning. All courses apply toward the A.O.S degree in Air Conditioning Technology - Refrigeration Option.
Goals & Outcomes
To prepare the students to enter the HVAC industry.
  • Graduates secure employment in the HVAC Industry.
  • Students successfully complete the required coursework.
To prepare the students to be safe and competent HVAC technicians.
  • Students will follow safety procedures.
  • Students will demonstrate ability to troubleshoot heating and cooling systems and develop a corrective action plan.
To prepare students to apply basic mathematical, scientific, and technical concepts to the solution pressure temperature relationship
  • Students will be able to apply mathematical, scientific, and technical concepts to solve pressure temperature relationships and their effect on refrigeration systems.
To prepare students to demonstrate information literacy.
  • Students will use traditional and contemporary information technology.
  • Students will identify, access, and appropriately use authoritative sources of information.
First Semester
MA105 Technical Math 1
This course covers the four fundamental operations on integers, rational numbers, and real numbers. It includes the study of weights and measures, exponents and radicals, factoring, and linear equations, with an emphasis on technical applications. See when this course is offered ...
ET108 Refrigeration 1
This course covers basic physics as applied to refrigeration and air conditioning. Topics include flaring and soldering techniques, compressor construction, domestic refrigeration, and characteristics of automatic controls. See when this course is offered ...
ET111 Electrical Systems
This course provides the basic knowledge and skills necessary within any electrical service technician program. Topics include electrical units and metric prefixes; Ohm’s Law; series and parallel DC resistive circuits; electrical energy and power relationships in DC circuits; AC sine wave generation; mutual inductance; inductive and capacitive reactance; instantaneous values of voltage and current; and real and apparent power. Troubleshooting techniques and strategies to identify, localize, and correct malfunctions are examined. Co-requisite: MA105 Technical Mathematics 1 See when this course is offered ...
ET221 Air Conditioning Systems
ET221 Heating and Air Conditioning 2 C-3 P-4 Cr-5 This course introduces combustion techniques in oil and gas furnaces. It covers coil cells, stack controls, oil primary controls plus safety devices. Basic principles are applied to problem-solving in heat transfer. Types of systems involving residential and small commercial heating and air conditioning are covered. Split systems, hydronic systems, electric heat, heating and air conditioning controls, and package equipment are discussed along with heat pumps. Corequisites: ET108 Refrigeration 1 or VT133 Refrigeration and Air Conditioning 1. See when this course is offered ...
Second Semester
ET104 Systems Diagrams
This course covers the types, application, and use of electrical/electronic drawings. It includes schematic diagrams and symbols as well as the operation of electro-mechanical devices. The course differentiates between schematics and wiring diagrams. It develops the use of block diagrams, schematics, ladder-logic diagrams, wiring diagrams, assembly drawings, and bills of material. Topics include Programmable Logic Controllers (PLCs), Basic Relay PLC Instructions, PLC Timers and Counters, and PLC programs in the form of PLC ladder diagrams. Prerequisite: ET111 Electrical Systems See when this course is offered ...
ET123 Proper Refrigerant Usage
This course covers the impact of refrigerant on the global environment. Topics include ozone destruction, climate change, and EPA standards for the safe usage and handling of refrigerants. Additional topics include the Montreal Protocol and Clean Air Act of 1990. See when this course is offered ...
ET209 Refrigeration 2
This course covers the components of refrigeration for commercial and industrial systems. It includes systems requirements and the application of components to develop built-up systems. Prerequisite: ET108 Refrigeration 1, or VT133 Refrigeration and Air Conditioning 1. (Fall semester) See when this course is offered ...
ET220 Air Conditioning Principles
ET220 Heating and Air Conditioning 1 C-3 P-2 Cr-4 This course covers calculations of heat loss and gain based on residential and commercial levels. Topics include humidification; dehumidification; air mixture problems; and determination of U factors to enhance calculation accuracy. Additional topics include ventilation, exhaust loads and standards, and a working background in psychometrics. The course starts with simple heat properties of air and will progress to complex air mixture properties. See when this course is offered ...

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