Refrigeration AC Technician

Contribute to the City of Hamilton, one of Canada’s largest cities - home to a diverse and strong economy, an active and inclusive community, a robust cultural and dining scene, hundreds of kilometers of hiking trails and natural beauty just minutes from the downtown core, and so much more. Join our diverse team of talented and ambitious staff who embody our values of sensational service, courageous change, steadfast integrity, collective ownership and being engaged empowered employees. Help us achieve our vision of being the best place to raise a child and age successfully. #BeTheReason

• Job ID #31748: Refrigeration AC Technician
• Union: CUPE Local 5167
• Job Description ID #:1322
• Close date: Interested applicants please submit your application online at by 4:00 p.m. on July 15, 2026.
• Vacancy type: This posting is for an existing vacancy
• Internal applicants should apply with your work e-mail address. External applicants are considered only after the internal posting process has been completed. Only applicants chosen for an interview will be contacted.

Summary Of Duties

Report to the Supervisor, Facilities Management. Conducts scheduled and unscheduled maintenance and repairs of mechanical equipment and building systems by maintaining, adjusting, and repairing equipment at various Corporate sites as required.

GENERAL DUTIES

Conduct scheduled and unscheduled maintenance and repairs of mechanical equipment such as, boilers, heat pumps, cooling towers, humidifiers, circulating pumps, exhaust fans air handling units, ice makers, natural gas/ electrical cooking appliance, unit heaters, tube heaters, roof top units and generators,

Prepare plans and prioritize required equipment maintenance.

Troubleshoots and repairs electrically controlled heating, ventilation, and air conditioning equipment such as infrared heaters, rooftop units, heat recovery units, CO2 , refrigerant monitor alarm system, generators, domestic hot water boilers and mixing valves, toluene exhaust system and alarm monitor, modulating damper and valve systems.

Troubleshoots and repairs a refrigeration or heating system by competent use of all required temperature and pressure testing instruments, recovery equipment and cylinders, vacuum pump, brazing equipment, multimeter, amp meter, megger meter, refrigerant leak locating equipment, manometer, charging scale, capacitor tester, sling psychrometer, pneumatic sequencer, combustion efficiency tester, etc. Inspect DDC controls systems, preform preventative maintenance and troubleshoot issues and make emergency repairs as necessary.

Recharges or adjusts the oil or refrigerant charge of a refrigeration system to ensure proper efficiency, compressor cooling and protection against compressor slugging by measuring and adjusting the heat and sub-cooling of a system.

Records information from refrigeration units such as temperatures, pressure.

Locates refrigerant leaks using an electronic detector, ultrasonic detector, and soap solution.

Reads electrical and pneumatic drawing where required and modifies equipment when required for better control or efficiency.

Liaises with staff in other Departments such as I.T., Fire Department, and Community Services. Recognizes and corrects water or air flow problems.

Replaces components such as fan blades, valve parts, bearings, pulleys, pump parts, motors, compressors, coils, heat exchangers, sensors, burner parts, electrical parts, wiring, etc.

Operates power and hand tools such as drills, vacuum pump, electric tube cleaner, socket wrenches, pipe wrenches, screwdrivers, and hammer.

Oversees work of contractors as requested.

Monitor and test building safety devices such as sprinklers, alarms, generators, ATS, fire hoses and extinguishers. Adjust air handling system controls to maintain environmental conditions through the building system computer. Perform electrical repairs and troubleshooting as it pertains to equipment.

Repair all building indoor and outdoor lighting, adjust or replace occupancy lighting sensors. Repair doors, handles, hardware and overhead doors.

Perform minor maintenance such as hanging pictures, painting, and grounds clean-up. Operate oxy-acetylene torch set for cutting, heating and brazing.

Monitor and maintain hydronic systems chemistry, including cooling tower chemical treatment systems. Perform housekeeping duties in mechanical rooms such as cleaning and painting.

Perform other duties as assigned which are directly related to the major responsibilities of the job.

Qualifications

• Proven theoretical knowledge and experience in the operation of heating, ventilation and air conditioning systems normally acquired by a combination of education and relevant trade related work experience.
• At the time of application, must possess a current Ontario Certificate of Qualification as a Refrigeration and Air Conditioning Mechanic (313A).
• At the time of application, must possess a valid Ontario Gas Fitter G1 G2 will be considered
• Must possess a current licence for the safe handling and recovery of refrigerants; Ozone Depletion Prevention (ODP) certification.
• Must be experienced and qualified in the operation, maintenance and repair of natural gas heating, air conditioning, ventilation, automatic controls and high pressure (natural gas, air), and distribution
• Possess experience in the functionality of building automation systems and HVAC controls including equipment
• Demonstrated knowledge of asbestos
• Must have knowledge and/or training of appropriate authority safety
• Must be able to work with minimum supervision as well as a team
• Ability to coordinate, communicate and relate well with professionals and non-professionals within and outside the organization, with strong customer skills
• Ability to adjust building system computer to maintain environmental conditions through the building
• Must have a valid Class "G' driver’s License, with a clear driving
• Must have Working at Heights or obtain within three months on the
• Must be willing to complete all required training provided by the City of
• Must be able to lift up to 50

THIS POSITION REQUIRES A VALID CLASS "G" DRIVER'S LICENCE AND PROOF IS REQUIRED

Salary Grade J

40 per week

Be advised that Human Resources frequently audits resumes of internal/external applicants to ensure/validate information provided is consistent and trustworthy. Falsification of information provided at any time throughout the recruitment process may be grounds for disqualification, and for internal applicants, subject to discipline up to and including termination.

The City is an equal opportunity employer that is committed to inclusive, barrier-free recruitment and selection processes. Consistent with our Values and Corporate Culture Pillars, the City of Hamilton is committed to providing equitable treatment to all with respect to barrier-free employment and accommodation without discrimination. The City will provide accommodation for applicants in all aspects of the hiring process, up to the point of undue hardship. If you have an accommodation need, please contact Human Resources as soon as possible to make appropriate arrangements.