Explain the HVAC industry’s role in global climate change and the regulations designed to combat climate change.
Explain how evaporative cooling units reduce air temperature and indicate conditions under which they are most effective.
Compare and contrast latent heat and sensible heat, including information about their impacts on the refrigeration cycle.
Determine wet-bulb and dry-bulb temperature, relative humidity, and dew point using an electronic psychrometer.
Predict values for the various properties of air needed to design, adjust, or modify an HVAC system, using a psychrometric chart.
Explain the underlying scientific and mechanical principles of heating, cooling, refrigeration, and ventilation systems.
Explain the heat transfer principle and how it applies to modern heating systems.
Explain the mechanical refrigeration cycle and how it applies to modern cooling systems.
Describe the methods used to meet Environmental Protection Agency (EPA) indoor air quality standards in modern ventilation systems.
Calculate the cubic feet in a cube or rectangular prism to determine the size HVAC unit needed for a given structure.
Convert pressures and temperatures using the PT chart to determine and set coil pressure.
Solve algebraic equations for designing, adjusting, modifying, or troubleshooting an HVAC system.
Examples: pressure calculations, air flow volume change
Explain the fundamentals of electricity and how it is generated.
Describe the components of a basic electrical circuit and identify electrical symbols on a schematic diagram, including a compressor, fan motor, and transformer.
Apply Ohm’s law to troubleshoot electrical issues in an HVAC system.
Use the power formula to calculate how much power a device is consuming.
Explain the difference between parallel and series circuits and ways they are used.
Measure voltage, amperage, and resistance on an electrical circuit.
Explain the difference between a ladder diagram and a wiring schematic.
Incorporate safety procedures in handling, operating, and maintaining tools and machinery; handling materials; utilizing personal protective equipment; maintaining a safe work area; and handling hazardous materials and forces.
Demonstrate effective workplace and employability skills, including communication, awareness of diversity, positive work ethic, problem-solving, time management, and teamwork.
Explore the range of careers available in the field and investigate their educational requirements, and demonstrate job-seeking skills including resume-writing and interviewing.
Advocate and practice safe, legal, responsible, and ethical use of information and technology tools specific to the industry pathway.
Participate in a Career and Technical Student Organization (CTSO) to increase knowledge and skills and to enhance leadership and teamwork.
Use a builder’s level and differential-leveling procedures to determine site and building elevations, explaining how differential leveling is used to establish point elevations, cross-sections, and control benchmarks.
Set up and calibrate a leveling instrument.
Calculate elevations using backsight (BS) and foresight (FS) data from field notes recorded from a differential leveling survey.
Demonstrate proper handling and storage of tools and equipment associated with differential leveling.
List applications of reinforced concrete and the general requirements for working with reinforcing steel, including tools, equipment, and fabricating methods.
Describe methods by which reinforcing bars may be bent and cut in the field and explain the methods for placing reinforcing steel.
Summarize safety guidelines for working in and around foundation excavations and trenches.
Describe various shoring, shielding, and sloping systems used for trenches and excavations.
Draft a job hazard/safety analysis for an excavation according to given specifications.
Compare and contrast the different types, bearing capacities, and classifications of soils.
Describe methods of compacting and testing soil.
