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Class B Refrigeration Operator

Black & McDonald Limited
Whitby, ON, Canada Posted Sep 25, 2026
Full-timeOn-site

About this role

Class B Refrigeration Operator

Location: Whitby, ON

Shift: Continental rotation (7 days on / 7 days off). Rotating 12-hour day and night shifts.

ABOUT THIS CAREER OPPORTUNITY

If you are a technical and hands-on professional searching for the opportunity to build a solid foundation for your career, this position is for you. The Class B Refrigeration Operator opportunity work with-in Whitby location and reports to the Chief Operator. The position requires continental shifts, thus candidates must have open and flexible availability.​

You will be responsible for the following duties and responsibilities:

  • Experience within a TSSA-regulated ammonia 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 3rd Class Power Engineer certificate or higher or “A” or “B” Refrigeration Operator class certificate

WORK EXPERIENCE REQUIREMENTS

  • Must have experience working as an operator in an ammonia plant

SKILLS, ABILITIES, AND OTHER REQUIREMENTS

  • Must be able to work 7AM to 7PM on a continental rotational shift

  • Must be able to commute to Whitby

  • 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

The expected salary range for this role is determined in accordance with the union collective agreement

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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