TOK Group is seeking an experienced Transit Bus HVAC Technician to join our York Region Transit (YRT) Fleet Maintenance team. This role is responsible for the diagnosis, repair, maintenance, and seasonal servicing of HVAC systems on New Flyer and Nova Bus heavy-duty transit vehicles.
A valid Ontario 310T Truck and Coach Technician Licence is required for this position. The ideal candidate will possess strong HVAC diagnostic and repair experience, preferably within the transit, coach, or heavy-duty vehicle industry.
What You'll Do
· Diagnose and repair HVAC system faults on heavy-duty transit buses — rooftop and underbody units across New Flyer and Nova Bus platforms (Thermo King, Sutrak, Spheros, Transtec)
· Investigate common failure scenarios — no heat/no cooling complaints, intermittent operation, poor airflow, short cycling, and high/low pressure faults — and use pressure-temperature readings to pinpoint the cause
· Run full seasonal changeovers: cooling-season readiness in spring/summer and heating-system checks in fall/winter, including heater core inspection, coolant system checks, and air distribution dampers and actuators
· Complete scheduled preventive maintenance inspections — belt checks, compressor oil levels, electrical connection torque, filter replacement — and keep accurate, timely records in our M5 asset management system
· Handle refrigerant recovery, evacuation, and recharge by weight or by superheat/subcooling, in compliance with environmental regulations (once ODP-certified)
· Detect and repair refrigerant leaks using electronic detectors, UV dye, and bubble-testing methods, and replace fittings, O-rings, hoses, and lines as needed
· Troubleshoot HVAC electrical circuits — thermostats, temperature sensors, pressure switches, relays, contactors, control boards — and test compressor, fan, and blower motors
· Replace major components such as compressors, condensers, and evaporators, and commission the system afterward to confirm proper operation
· Work safely at heights exceeding 3 metres accessing rooftop HVAC units, following lockout/tagout and fall-protection procedures on every job
· Escalate complex diagnostic, warranty, or compliance issues to senior technicians or the Shop Supervisor when needed
What We're Looking For
· Valid Ontario 310T Truck and Coach Technician Licence (required).
· Demonstrated experience diagnosing, repairing, and maintaining HVAC systems on transit buses, coaches, heavy-duty trucks, or commercial fleets.
· Experience servicing HVAC equipment on New Flyer, Nova Bus, or similar heavy-duty transit vehicles is highly preferred.
· Strong knowledge of refrigeration systems, HVAC controls, electrical diagnostics, and mechanical repair practices.
· Ability to read and interpret wiring diagrams, schematics, and manufacturer service manuals.
· Valid Ontario Class G Driver's Licence with a clean driver's abstract.
· Strong troubleshooting and problem-solving skills.
· Ability to work independently and collaboratively within a team environment.
· Comfortable working at heights and performing rooftop HVAC repairs
· Transit or fleet maintenance experience
Why TOK Group
· Growing electric bus fleet means growing opportunities in EV HVAC systems
· Competitive wage, benefits package, and stable, full-time hours
· Opportunity to work on a modern and growing transit fleet, including alternative fuel and electric vehicles.
· Professional, team-oriented, and safety-focused work environment.
Position Details
· Job Type: Full-time, Permanent
· Location: Vaughn, ON — in person
· Schedule: Day shift to start (may vary with operational needs)
Apply today and start a career, not just a job
Pay: From $43.49 per hour
Expected hours: 40.0 per week
Work Location: In person
