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Occupational Title: HVACR Technician Key Purpose: Diagnose, install, service, and repair heating, ventilation, air conditioning and refrigeration systems.
Critical Work Function 6 Design, install, maintain, and repair residential and light commercial air conditioning systems.			Occupational Skills, Knowledge and Conditions
Key Activities		Performance Criteria	Occupational Skills and Knowledge	Conditions
Those duties or task clusters that are necessary to perform each critical work function.		Specific demonstrable performance and standards that indicate when the key activity has been performed successfully.	Those skills and knowledge that are specific to the occupation, such as technical processes or procedures common across the occupation that are critical to the related key activity.	Tools, resources and equipment necessary to carry out key activities and their related performance criteria.

KA6.1	Identify, diagnose, install, maintain, and repair air conditioning systems.	Number Criteria 6.1.1  Identify and diagnose air conditioning systems (split, packages) as to size and capacity style, taking into account temperature, humidity, refrigeration pressures, heat gain and heat loss of structure, refrigerant leaks, air movement, etc.  6.1.2  Install air conditioning systems taking into account temperature, humidity, heat gain and heat loss of structure, air movement, etc. 6.1.3  Maintain air conditioning systems taking into account temperature, humidity, heat gain and heat loss of structure, air movement, etc.  6.1.4  Repair air conditioning systems taking into account temperature, humidity, heat gain  and heat loss of structure, air movement, etc. 6.1.5  Post-service performance audit of HVACR equipment meets mechanical codes and indicates air conditioning systems operating at or above manufacturer’s design specifications, benchmarks, and baselines.	Understanding of residential and light commercial air conditioning systems. Understanding of psychrometrics. Knowledge and application  of various measuring instruments and testing devices. Knowledge of manufacturers’ installation instructions for proper location of equipment and lines. Ability to use reciprocating and circular saws. Ability to braze copper tubing. Ability to measure temperature difference to determine proper  temperature across evaporator. Ability to use nitrogen, ultrasonic, and electronic  leak detectors to find refrigerant links.	Appropriate hand tools (circular saws)  Manifold gauge  VOM multimeter  Ammeter  2-stage vacuum pump  Micron gauge  Digital thermometer  Psychrometer  Psychrometric chart Air-flow meter   Heat loads  Duct Calculator  Nitrogen, ultrasonic, and electronic leak detectors
KA6.2	Identify, diagnose, install, maintain, and repair air distribution systems, condensate drain systems, and air filtration systems.	Number Criteria 6.2.1  Identify and diagnose air distribution systems, condensate drain systems, and air filtration systems.  6.2.2  Install air distribution systems, condensate drain systems, and air filtration systems.  6.2.3  Maintain air distribution systems, condensate drain systems, and air filtration systems.  6.2.4  Repair air distribution systems, condensate drain systems, and air filtration systems.  6.2.5  Post-service performance audit of HVACR equipment indicates air distribution,  condensate drain, and air filtration systems operating at or above manufacturer's design specifications, benchmarks, and baselines.	Knowledge of HVACR air distribution, condensate drain systems, and air filtration systems. Understanding of the proper procedures for air/acetylene torch rig. Understanding of duct sizing for proper CFM (cubic feet per minute) air flow. Ability to use duct calculator. Ability to use heat loss/heat gain calculations to determine CFM requirements. Ability to use magnetic gauges to measure static pressure and velocity pressure. Ability to use temperature rise method for determining CFM.	Appropriate hand tools  Air/Acetylene torch rig Ductulator