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Class B Refrigeration Operator; Casual Part-Time

Job in Hamilton, Ontario, Canada
Listing for: Black & McDonald Limited
Part Time, Per diem position
Listed on 2026-09-17
Job specializations:
  • Trades / Skilled Labor
    HVAC Tech / Heating Engineer, Maintenance Technician / Mechanic
Salary/Wage Range or Industry Benchmark: 29 - 30 CAD Hourly CAD 29.00 30.00 HOUR
Job Description & How to Apply Below
Position: Class B Refrigeration Operator (Casual Part-Time)

ABOUT THIS CAREER OPPORTUNITY

If you are a technical and hands-on professional, this casual part-time position is for you. The Class B Refrigeration Operator opportunity is a permanent part-time position and reports to the Refrigeration Operations Supervisor. The position requires coverage 7 days/week, so candidates must have open and flexible availability.​

The 3rd Class Refrigeration Operation will be responsible for the following duties and responsibilities:

  • Experience with in a TSSA-regulated refrigeration/boiler plant
  • Operate air compressors, chillers, water towers, water softeners, air dryers, pumps, and fans
  • Chiller maintenance including cooling towers and associated equipment
  • Extensive experience on HVAC/R systems
  • Responsible for the safe operation of the refrigeration plant
  • Perform all tasks related to the safe and efficient operation of the plant including repairs and maintenance
  • Perform routine inspection and testing of equipment and building infrastructure to ensure proper operation
  • Perform minor repair and general maintenance duties associated with building systems
  • Document air compressor readings, all plant steam produced and consumption and gas consumption; supply gas forecasts to gas supplier
  • Track and log all gas, water, and hydro readings
  • Monitor and maintain water treatment for chillers and cooling towers
  • Familiar with CMM and preventative maintenance programs
  • Provide access and assistance to sub-trades as required

EDUCATION REQUIREMENTS

  • Must possess “A” or “B” Refrigeration Operator class certificate or a 3rd Class Power Engineer certificate or higher

WORK EXPERIENCE REQUIREMENTS

  • Must have experience working as an operator in a refrigeration/boiler plant

SKILLS, ABILITIES, AND OTHER REQUIREMENTS

  • Strong troubleshooting and interpersonal skills
  • Bending and lifting required; lifting under 30 kg
  • Ability to climb stairs and work on a ladder or scaffold as required
  • Good computer skills
  • Good oral and written communication skills
  • Provide vacation coverage for other operators
  • Must be able to successfully obtain and maintain necessary security clearances


Expected compensation for this role is a starting pay range between $29.00-$30.00/hour dependent on skills and experience.

Black & McDonald welcomes and encourages applications from persons with disabilities.
Accommodations are available upon request for candidates taking part in all aspects of the recruitment and selection process.

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