Refrigeration and Air Conditioning Mechanic Red Seal Examination Weightings

Refrigeration and Air Conditioning Mechanic - Pie Chart

MWA A - Performs common occupational skills 10%

MWA B - Performs routine trade activities 15%

MWA C - Plans installation 14%

MWA D - Performs installation 21%

MWA E - Performs commissioning 17%

MWA F - Performs maintenance and service 23%

This pie chart represents a breakdown of the interprovincial Red Seal examination. Percentages are based on the collective input from workers from the trade from across Canada.

The following is the list of all of the Major Work Activities, Tasks and Sub-tasks. The percentages represent how the questions are assigned to each Major Work Activity and Task. Interprovincial examinations for this trade have 125 questions.

MWA A – Performs common occupational skills 10%

1. Task A-1 Performs safety-related functions 24%

  • A-1.01 Maintains safe work environment
  • A-1.02 Performs lock-out, tagout and isolation procedures
  • A-1.03 Performs lock-out, tagout and isolation procedures

2. Task A-2 Uses tools and equipment 36%

  • A-2.01 Uses hand tools
  • A-2.02 Uses portable and stationary power tools
  • A-2.03 Uses brazing and soldering equipment
  • A-2.04 Uses recovery and recycling tools and equipment
  • A-2.05 Uses evacuation tools and equipment
  • A-2.06 Uses charging tools and equipment
  • A-2.07 Uses diagnostic and measuring tools and equipment
  • A-2.08 Uses access equipment
  • A-2.09 Uses rigging, hoisting and lifting equipment
  • A-2.10 Uses digital technology

3. Task A-3 Organizes work 24%

  • A-3.01 Interprets drawings and specifications
  • A-3.02 Uses documentation and reference material
  • A-3.03 Plans job tasks and procedures

4. Task A-4 Uses communication and mentoring techniques 16%

  • A-4.01 Uses communication techniques
  • A-4.02 Uses mentoring techniques

MWA B – Performs routine trade activities 15%

5. Task B-5 Performs work site preparation 25%

  • B-5.01 Prepares work site
  • B-5.02 Handles materials and supplies

6. Task B-6 Performs trade activities 75%

  • B-6.01 Performs brazing and soldering
  • B-6.02 Performs leak and pressure tests on system
  • B-6.03 Evacuates systems
  • B-6.04 Uses refrigerants, gases and oils
  • B-6.05 Performs field wiring of systems
  • B-6.06 Applies sealants and adhesives

MWA C – Plans installation 14%

7. Task C-7 Plans installation of HVAC/R systems 62%

  • C-7.01 Verifies HVAC/R system parameters and requirements
  • C-7.02 Selects HVAC/R equipment, components and accessories
  • C-7.03 Determines placement of HVAC/R equipment, components and accessories
  • C-7.04 Performs HVAC/R material take-off

8. Task C-8 Plans installation of control systems 38%

  • C-8.01 Verifies control system parameters and requirements
  • C-8.02 Selects control system components and accessories
  • C-8.03 Determines placement of control system components and accessories
  • C-8.04 Performs control system material take-off

MWA D – Performs installation 21%

9. Task D-9 Installs HVAC/R systems 62%

  • D-9.01 Confirms system layout
  • D-9.02 Assembles HVAC/R equipment, components and accessories
  • D-9.03 Places HVAC/R equipment, components and accessories
  • D-9.04 Installs fasteners, brackets and hangers
  • D-9.05 Installs HVAC/R piping and tubing
  • D-9.06 Applies HVAC/R holding charge

10. Task D-10 Installs control systems 38%

  • D-10.01 Places control system components
  • D-10.02 Connects control systems

MWA E – Performs commissioning 17%

11. Task E-11 Commissions HVAC/R systems 61%

  • E-11.01 Performs pre-start-up checks for HVAC/R systems
  • E-11.02 Performs start-up of HVAC/R systems
  • E-11.03 Completes HVAC/R system charge
  • E-11.04 Sets up primary and secondary HVAC/R system components

12. Task E-12 Commissions control systems 39%

  • E-12.01 Performs start-up checks for control systems
  • E-12.02 Verifies/sets operating parameters

MWA F – Performs maintenance and service 23%

13. Task F-13 Maintains HVAC/R systems 30%

  • F-13.01 Inspects HVAC/R systems
  • F-13.02 Performs predictive and scheduled maintenance on HVAC/R systems
  • F-13.03 Tests HVAC/R system components and accessories

14. Task F-14 Services HVAC/R systems 40%

  • F-14.01 Troubleshoots HVAC/R systems
  • F-14.02 Repairs HVAC/R systems

15. Task F-15 Maintains and services control systems 30%

  • F-15.01 Performs maintenance and inspection on control systems
  • F-15.02 Troubleshoots control systems
  • F-15.03 Calibrates operating and safety controls
  • F-15.04 Repairs control systems