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HVAC & Refrigeration Mechanic – On-Site Expert

Job in Chalk River, Ottawa, Ontario, Canada
Listing for: Canadian Nuclear Laboratories Ltd.
Full Time, Apprenticeship/Internship position
Listed on 2026-10-29
Job specializations:
  • Trades / Skilled Labor
    HVAC Tech / Heating Engineer, Maintenance Technician / Mechanic, Installation Technician
Salary/Wage Range or Industry Benchmark: 70000 - 90000 CAD Yearly CAD 70000.00 90000.00 YEAR
Job Description & How to Apply Below
Location: Chalk River

Are you looking for a role that will challenge you? Can you see yourself as a Refrigeration & Air Conditioning Mechanic, supporting critical site infrastructure by troubleshooting, repairing, installing, and maintaining HVAC and refrigeration systems? Do you enjoy hands-on work, solving technical problems, and ensuring equipment operates safely and efficiently to support day-to-day operations? If you answered yes, then this may be the job for you!

Apply today!

What you will be doing!

  • Troubleshooting, repairing, maintaining, dismantling, installing, and adjusting refrigeration, ventilation, and air conditioning equipment.
  • Maintaining HVAC systems and associated equipment, including fans, compressors, condensers, pressure regulating valves, expansion valves, humidistats, thermostats, and water regulating valves.
  • Balancing ventilation systems to design specifications and verifying performance following modifications.
  • Taking air velocity readings and conducting system performance testing using specialized instruments.
  • Reading and interpreting drawings, work packages, and technical reference materials to ensure work is completed safely and in compliance with applicable requirements.
  • Performing leak checks on refrigeration and air conditioning systems.
  • Charging and discharging refrigerant cooling systems and gas-insulated equipment.
  • Installing refrigerant piping and performing flaring, silver soldering, and soft soldering activities as required.
  • Maintaining housekeeping standards for work areas, tools, and equipment.
  • Attending safety meetings, identifying safety concerns, and applying safe work practices throughout assigned activities.
  • Assisting with training, coaching, and mentoring apprentices, co-op students, and new employees.
  • Supporting skill development by demonstrating techniques, reviewing work performance, and sharing best practices.
  • Other duties as assigned by your manager.

What we are looking for:

  • Education
    • Secondary School Graduation Diploma.
    • Qualification as a Refrigeration & Air Conditioning Mechanic, typically acquired through the completion of a 9,000-hour apprenticeship program.
  • Experience
    • Experience troubleshooting, repairing, installing, and maintaining HVAC and refrigeration equipment.
    • Experience working with ventilation systems, refrigeration equipment, and associated controls.
    • Experience reading and interpreting technical drawings, blueprints, and work packages.
    • Experience performing leak testing, refrigerant handling, and equipment commissioning activities.
    • Experience with Distributed Digital Control (DDC) systems is considered an asset.
  • Knowledge, Skills & Abilities
    • Demonstrated knowledge of applicable codes, standards, regulations, and procedures related to refrigeration, air conditioning, and HVAC systems.
    • Demonstrated commitment to safe work practices and the proper use of Personal Protective Equipment (PPE).
    • Proven ability to troubleshoot and resolve issues involving mechanical and HVAC equipment.
    • Demonstrated ability to read and interpret technical diagrams, blueprints, drawings, and work packages.
    • Strong verbal and written communication skills with the ability to work effectively in multi-trade environments.
    • Knowledge of Microsoft Office applications for documentation, data entry, communication, and procedural updates.
    • Demonstrated ability to work collaboratively with supervisors, planners, schedulers, customers, and other trades personnel.
    • Working knowledge of Distributed Digital Control (DDC) systems is considered an asset.
  • Security Clearance Eligibility Required
    • Reliability Status with Site Access Security Clearance (SASC), which has a minimum requirement of 3-5 years of verifiable history in Canada, Australia, New Zealand, the United States and/or the United Kingdom. CNL implements…
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