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NOC Code: NOC Code: 7313 Occupation: Heating, refrigeration and air conditioning mechanics
Occupation Description: Occupation Description:
Heating, refrigeration and air conditioning mechanics install, maintain, repair and overhaul residential central air conditioning systems, commercial and industrial refrigeration and air conditioning systems and combined heating, ventilation and cooling systems. They are employed by heating, refrigeration and air conditioning installation contractors, various industrial settings, food wholesalers, engineering firms and retail and servicing establishments. Transport refrigeration mechanics are included in this unit group. Heating, refrigeration and air conditioning mechanics install, maintain, repair and overhaul residential central air conditioning systems, commercial and industrial refrigeration and air conditioning systems and combined heating, ventilation and cooling systems. They are employed by heating, refrigeration and air conditioning installation contractors, various industrial settings, food wholesalers, engineering firms and retail and servicing establishments. Transport refrigeration mechanics are included in this unit group.

  • Click on any of the Essential Skills to view sample workplace tasks for this occupation.
  • Scroll down the page to get information on career planning, education and training, and employment and volunteer opportunities.

Table will display the Skill Level for the Noc specified
Essential Skills Essential Skills Levels
Reading Reading 1 2 3 4
Writing Writing 1 2 3
Document Use Document Use 1 2 3 4
Digital Technology Digital Technology 1 2
Oral Communication Oral Communication 1 2 3
Money Math Money Math 1 2 3
Scheduling or Budgeting and Accounting Scheduling or Budgeting and Accounting 1 2
Measurement and Calculation Measurement and Calculation 1 2 3 4
Data Analysis Data Analysis 1 2 3
Numerical Estimation Numerical Estimation 1 2 3
Job Task Planning and Organizing Job Task Planning and Organizing 1 2 3
Decision Making Decision Making 1 2
Problem Solving Problem Solving 1 2
Finding Information Finding Information 1 2 3
Critical Thinking Critical Thinking 1 2 3

  • The skill levels represented in the above chart illustrate the full range of sample tasks performed by experienced workers and not individuals preparing for or entering this occupation for the first time.
  • Note that some occupational profiles do not include all Numeracy and Thinking Essential Skills.

If you would like to print a copy of the chart and sample tasks, click on the "Print Occupational Profile" button at the top of the page.

  • Read short instructions written on signs, labels and packaging, e.g. read product labels to learn how to mix refrigerants. (1)
  • Read short text entries on a variety of forms and technical drawings, e.g. read comments on work orders to ensure that the correct piece of equipment is being installed. (1)
  • Read reminders and short notes from co-workers, e.g. read notes from other tradespeople to learn how to access a worksite. (1)
  • Read safety-related information, e.g. read Material Safety Data Sheets to learn how to safely handle refrigerants and other toxic materials. (2)
  • Read magazine and website articles, e.g. read articles in HPAC to learn about the design and use of digital scroll compressors. (3)
  • Read a variety of installation, repair and maintenance manuals, e.g. read detailed diagnostic procedures in repair manuals to learn how to troubleshoot and repair malfunctioning compressors. (3)
  • Read bulletins and memos, e.g. read manufacturer's technical service bulletins to learn about modifications and solutions for repetitive system failures. (3)
  • Read regulations, e.g. read regulations to learn the rules governing the transportation of dangerous goods and the use of ozone depleting substances. (4)
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  • Write brief notes in a variety of logbooks and forms, e.g. write a description of an equipment fault in a work order. (1)
  • Write brief reminder notes, e.g. write a brief note to remind co-workers about the particulars of an upcoming installation. (1)
  • Write incident reports, e.g. complete incident reports for workers' compensation boards to describe events leading up to accidents. (2)
  • Write technical service reports, e.g. write a detailed three-page report outlining the cause of an air conditioning system failure, repair options and recommendations. (3)
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Document Use
  • Look at a variety of manufacturers' labels to locate part numbers, serial numbers, sizes, colours and other information. (1)
  • Observe hazard and safety icons, e.g. recognize hazard signs posted at work sites that warn of flammable and combustible materials, high voltage electricity and compressed gas. (1)
  • Complete a variety of forms, e.g. complete start up sheets, job estimates, permits and work orders by entering details, such as names, dates, settings, times and costs. (2)
  • Locate data, such as sizes, classifications, material coefficients, grades, pressures, flows, quantities, identification numbers and costs, in specification tables. (3)
  • View graphed data, e.g. analyze temperature graphs of refrigerated unit sensors over a two-week period to diagnose equipment problems. (3)
  • Interpret complex schematic drawings, e.g. study wiring system schematics to locate capacities and components, such as circuits, and to troubleshoot faults. (4)
  • Interpret complex scale drawings, e.g. study scale drawings to determine sites for equipment installation, routing for ducting and pipes and the location of control boxes, vents and air boxes. (4)
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Digital Technology
  • Use calculators and personal digital assistant (PDA) devices to complete numeracy-related tasks, such as calculating material requirements. (1)
  • Use hand-held devices, such as infrared thermography cameras, to locate and troubleshoot equipment faults. (1)
  • Use hand-held tools, such as electronic air quality measuring devices, to measure concentration levels of refrigerants. (1)
  • Use databases to input customer contract information and the model number of heating and ventilation systems installed. (1)
  • Use hand-held computers for real-time billing. (2)
  • Use the Internet to access training courses and seminars offered by suppliers, employers and trade schools. (2)
  • Use the Internet to access blogs and web forums to seek and offer troubleshooting and other technical advice. (2)
  • Use the Internet to access articles to stay current on industry trends and practices. (2)
  • Use word processing to write technical reports. (2)
  • Use databases to retrieve repair information and technical drawings. (2)
  • Use communication software to communicate with clients and suppliers by email. (2)
  • Communicate with other heating, refrigeration and air conditioning mechanics on blogs and forums to provide advice and learn how to repair unusual faults. (2)
  • Use the Internet to visit manufacturers' websites to access recent technical service bulletins, recall notices, frequently asked questions and specifications. (2)
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Oral Communication
  • Speak with suppliers and dispatchers, e.g. speak with dispatchers to report worksite delays and other problems. (1)
  • Speak to customers to discuss equipment faults, projects and the maintenance and operation of the heating, ventilation or air conditioning equipment. (2)
  • Talk to other tradespeople about a wide variety of topics, e.g. speak with construction electricians to coordinate work activities. (2)
  • Provide detailed step-by-step instructions to contractors, apprentices and other tradespeople, e.g. explain how to install an air makeup unit to an apprentice while demonstrating the procedures. (3)
  • Exchange technical repair and troubleshooting information with co-workers, colleagues and manufacturers, e.g. explain complex repair procedures to co-workers and discuss unusual air conditioning system faults with manufacturers' technical representatives. (3)
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Money Math
  • Total the cost of parts when preparing orders for suppliers. (1)
  • Approve payment for invoices submitted by suppliers, verifying the accuracy of the charges for parts ordered and received. (2)
  • Calculate amounts for estimates and invoices. Multiply hours worked by labour rates and add amounts for materials, supplies and applicable taxes. (3)
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Scheduling or Budgeting and Accounting
  • Schedule the completion of complex projects by considering tasks, lead times and the availability of labour and parts. (2)
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Measurement and Calculation
  • Take a variety of measurements using basic tools, e.g. measure length of piping using tape measures. (1)
  • Calculate material requirements, e.g. calculate the areas and volumes of ducting and piping assemblies to determine the cost of materials and supplies. (2)
  • Calculate capacities, e.g. calculate the internal area of a closed piping system to determine the volume of refrigerant required in a system. (3)
  • Take a precise measurement using a micrometer to check shaft size for bearings when replacing parts. Operation of a micrometer usually requires additional training. (3)
  • Calculate rolling offsets when installing fittings and venting systems, e.g. use offset distances, changes in elevations, Pythagorean formula and trigonometry tables to determine the required lengths of pipe. (4)
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Data Analysis
  • Compare readings to specifications, e.g. compare an air conditioning system's pressure readings to specifications. (1)
  • Calculate averages across sets of readings on the energy consumption to compare different systems. (2)
  • Analyze multiple temperature and air flow readings to evaluate air conditioning system functions and troubleshoot faults, e.g. compare measurements of air flow to calculated and predicted values at various points in the system to identify the location of leaks. (3)
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Numerical Estimation
  • Estimate the length of ducting or pipe required. (1)
  • Estimate the time and material costs to install an additional run of piping. (2)
  • Estimate factors, such as volume, temperature and average load size, to identify the type of refrigeration system required for a mobile unit. (3)
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Job Task Planning and Organizing
  • Heating, refrigeration and air conditioning mechanics may be given their work orders for the day and can set them up according to efficient use of travel time or they may be given assignments with priorities already established. They may have to work on more than one project at a time and must reorder their schedules accordingly. They may be called away from a worksite for an emergency job and then return to complete the first job later. They may have to integrate their work plans with others to meet deadlines, such as inspection dates, and meet the needs of their customers. They may also have to coordinate their work with other trades, especially on large work sites. (3)
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Decision Making
  • Decide the order of repair and maintenance jobs, e.g. give priority to small tasks that can be turned around quickly. (1)
  • Decide which parts need to be replaced for general maintenance and schedule the work to minimize disruption of service. (2)
  • Decide how to troubleshoot an equipment fault by considering the nature of the malfunction and the type of equipment being serviced. (2)
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Problem Solving
  • Encounter delays due to equipment breakdowns and shortages of materials. Inform equipment repairers and supervisors about the equipment faults and perform other work until repairs are completed. (1)
  • Deadlines cannot be met due to heavy workloads and projects which take longer than anticipated to complete. Call customers to inform them of delays, enlist the help of co-workers and work overtime to complete high priority work if necessary. (2)
  • Discover that the physical worksite does not match the layout shown in drawings. Advise customers and supervisors of the problem and complete other work until the needed drawings are available. (2)
  • Encounter unsafe conditions. Speak with supervisors about your concerns and perform other work until safety hazards have been rectified. (2)
  • Encounter customers who dispute service bills. Review the bill with the customer to explain the cost of each item. If the dispute cannot be resolved, refer the customer to the supervisor. (2)
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Finding Information
  • Refer to parts catalogues and speak with suppliers to determine the cost of materials and supplies. (2)
  • Locate information about the products you use by visiting manufacturers' websites, reading labels, product descriptions and Material Safety Data Sheets (MSDS) and talking to co-workers and suppliers. (2)
  • Locate information about mechanical faults by reviewing work orders, completing physical inspections, using scan tools and speaking with customers and co-workers. (3)
  • Find how to troubleshoot faults by conducting Internet research, reading manuals and speaking with other tradespeople and help desk technicians. (3)
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Critical Thinking
  • Evaluate the performance of apprentices. Consider apprentices' abilities to diagnose and troubleshoot faults, locate information, such as specifications, and complete repairs effectively. (2)
  • Evaluate the preparedness of job sites for air conditioning system installations. Consider the adequacy of access to work areas, lighting and protection from inclement weather. (2)
  • Evaluate the safety of work sites. Consider the hazards presented by elements, such as working from heights and in confined spaces. (2)
  • Determine the most efficient, safe and economic equipment selection or repair options to offer customers. (2)
  • Assess the quality of air conditioning system installations and repairs. Take readings and measurements, observe the appearance of joints and check for signs of leaks. (3)
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