Refrigeration & AC Technician

About the role

The City of Hamilton is seeking a skilled Refrigeration and Air‑Conditioning Technician to maintain and repair mechanical equipment across multiple municipal sites. Reporting to the Facilities Management Supervisor, you will ensure heating, ventilation, and cooling systems operate safely and efficiently.

Key responsibilities

• Perform scheduled and unscheduled maintenance on boilers, heat pumps, cooling towers, air‑handling units, generators and related HVAC equipment.
• Diagnose and repair electrically controlled heating, ventilation and air‑conditioning systems, including infrared heaters, rooftop units, heat‑recovery units and refrigerant monitoring alarms.
• Conduct refrigerant leak detection, recovery, charging and oil adjustments using specialized testing instruments.
• Oversee contractor work, monitor building safety devices (sprinklers, alarms, fire hoses) and perform minor building repairs such as lighting, doors and painting.

Required profile

• Current Ontario Certificate of Qualification as a Refrigeration and Air‑Conditioning Mechanic (313A) and a valid G‑class driver’s licence.
• Valid Ontario Gas Fitter G1 (G2 considered) and ODP certification for refrigerant handling.
• Ability to work independently or as part of a team, lift up to 50 kg and hold a Working at Heights certification (or obtain within three months).

Required skills

• Boilers, heat pumps, cooling towers, air‑handling units, generators.
• Electrical troubleshooting with multimeter, amp‑meter, megger and capacitor tester.
• Refrigerant leak detection (electronic, ultrasonic, soap solution) and recovery equipment.
• Use of vacuum pumps, brazing tools, manometers, charging scales and combustion efficiency testers.
• Building automation (DDC) and HVAC control systems.
• Knowledge of asbestos handling and relevant safety regulations.