Write an HVAC resume that shows the systems you install, service, or commission. Includes examples for commercial and data center work.
Name the heating, ventilation, refrigeration, and air conditioning systems you have worked on. Explain whether you installed, serviced, or commissioned them, and list the qualifications you hold. This guide covers work history and resume examples for Canadian technicians and apprentices.
Name the system, equipment, contractor, site, and result. Replace each example with your own work.
Commissioned 4×800-ton Trane CenTraVac centrifugal chillers and primary/secondary pumping for new hyperscale data center, Mississauga; supported witness testing with mechanical engineer, zero deficiency punch list.
Installed and commissioned 32 CRAC units (Vertiv DSE) on raised-floor data hall, GTA colo; coordinated leak detection, condensate pump-out, and integration with Schneider StruxureWare BMS.
Replaced 28-ton Carrier rooftop unit on 14-storey office tower, downtown Toronto; coordinated crane lift, gas piping reconnect (G2 scope), and DDC re-integration over weekend cutover.
Installed Daikin VRV IV+ heat pump system on 6-storey mixed-use residential, BC Lower Mainland; full commissioning per manufacturer protocol.
Service tech for residential portfolio of 1,400 customer accounts, GTA; consistent 4.9/5 CSAT, $X annual recurring service revenue.
Replaced 15 ammonia (NH₃) evaporator coils on industrial cold-storage facility, Calgary; followed CSA B52 and operator-specific lockout procedures.
Diagnosed and repaired BAS sequence-of-operations fault on chilled-water plant, Sunnybrook Hospital; coordinated with controls vendor (Honeywell), restored normal economy operation.
Notice what's missing: "responsible for," "duties included," "team player." Specific equipment, specific manufacturers, specific buildings, specific outcomes.
Lead with your certification, refrigerant and gas qualifications, systems experience, and site training:
Trade certification
Red Seal Refrigeration and Air Conditioning Mechanic, or provincial journeyperson. Ontario 313A vs 313D matters; spell it out.
ODP card
the federal Environmental Code of Practice for refrigerants. Mandatory for anyone handling refrigerant in Canada.
Gas fitter class
G3, G2, or G1 in Ontario; A or B in other provinces. Most commercial HVAC work needs G2 minimum.
System experience
chilled water, DX rooftop, VRF/VRV, CRAC/CRAH, hydronic, BAS controls.
Safety and site tickets
CSTS-2020, Fall Protection, Confined Space, WHMIS, First Aid.
If you're chasing data center cooling roles, the resume needs to scream chilled-water plant, CRAC/CRAH commissioning, BAS integration. If you're chasing residential service, it needs to show furnace and AC installation, ductwork, and customer-facing service. Different jobs, different framings — but the trade core is the same.
The Red Seal trade is Refrigeration and Air Conditioning Mechanic. The source-backed rows below separate compulsory, regulated, and jurisdiction-specific certification context:
Source-backed regulatory facts
The two Ontario codes matter on a resume. 313A covers residential, commercial, and industrial refrigeration and air conditioning systems plus combined heating-cooling work — the broadest scope. 313D covers residential air conditioning systems only — narrower scope, but easier and faster to achieve. A 313D holder cannot legally work on commercial refrigeration or industrial systems.
If you hold 313A, lead with it. It's the more valuable ticket. If you hold 313D and you're moving into commercial work, you'll typically need to retrain and challenge the 313A exam.
The Red Seal endorsement comes after passing the Interprovincial Standards Examination and makes you portable across the country. "Journeyperson" is the standard provincial term, but "journeyman" still appears in postings.
Beyond your trade ticket, list the certifications and cards that apply to the work you want:
Environmental Awareness Course for Refrigerant Handling (ODP card)
Ozone Depletion Prevention. Federally required for anyone purchasing, handling, or working with refrigerants in Canada. Issued through HRAI, RSES, or provincial equivalents.
Gas fitter class
G3, G2, G1 in Ontario through TSSA. A or B in BC, Alberta, Saskatchewan, and Manitoba. Most ICI HVAC techs hold at least G2 (or B in other provinces).
TSSA Certificate of Authorization
if you'll be operating as or for a refrigeration contractor in Ontario.
CSTS-2020
for any construction or ICI site.
Working at Heights / Fall Protection
essential for rooftop unit work. Ontario MOL-approved Working at Heights inside Ontario.
Confined Space Entry
for mechanical rooms, attic work, equipment cabinets.
WHMIS 2015, Standard First Aid, CPR-C
Common site training. List it with the completion or renewal date when useful.
Hot Work / Fire Watch
common on occupied buildings.
Aerial Work Platform / Boom & Scissor
useful for rooftop and large-scale install work.
Specialty tickets worth listing if you have them: manufacturer training (Trane TRACER, Carrier i-Vu, Daikin VRV/VRF certified, Mitsubishi VRF, Liebert/Vertiv CRAC, Schneider StruxureWare BAS), brazing certifications (CWB W47.1 for refrigerant piping where applicable), and electrical add-ons for techs cross-trained on motor controls.
Examples of data center work include chilled-water plants (centrifugal chillers, cooling towers, pumps), CRAC and CRAH unit installation and commissioning, in-row cooling, hot-aisle/cold-aisle containment, leak detection, and BAS controls integration. If you've worked at a data center or colocation facility, name the system, equipment, and scope.
The bread-and-butter of HVAC work in Canada. Mechanical contractors in every major city run continuous work on commercial towers, hospital retrofits, school board capital projects, and transit infrastructure. The work is rooftop units (Carrier, York, Lennox, Trane), VAV systems, VRF/VRV install (Daikin, Mitsubishi), DDC/BAS controls, hydronic and chilled-water mechanical rooms, ductwork integration. Name the contractor (Modern Niagara, Black & McDonald, Plan Group, Smith + Andersen consulting) and the building.
Residential service work can include furnace and AC change-outs, ducted heat pump installs, ductwork, and indoor air quality work. If you have customer-facing experience, describe the service area and work you handled.
Process refrigeration appears on oil sands, food and beverage, ice rink, and cold-storage sites. If you have ammonia (NH₃) or CO₂ transcritical experience, name the system and work you handled.
Federal and provincial rebate programs include Canada Greener Homes, BC's CleanBC, and Ontario residential incentives. If you have installed cold-climate ducted or ductless heat pumps, name the systems and work.
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Join the waitlistYes. The Red Seal trade is Refrigeration and Air Conditioning Mechanic. The source-backed rows above distinguish compulsory, regulated, and jurisdiction-specific classification context. The Red Seal endorsement is earned by passing the Interprovincial Standards Examination and makes you portable across the country.
313A is the Refrigeration and Air Conditioning Systems Mechanic — covers residential, commercial, and industrial refrigeration and air conditioning systems plus combined heating and cooling. 313D is the Residential Air Conditioning Systems Mechanic — covers residential AC systems only, with a much narrower scope. The source-backed rows above carry the current Ontario classification; if you want to move from residential-only work into commercial systems, plan for the broader 313A path.
The ODP card — formally the Environmental Awareness Course for Refrigerant Handling — is a federally required certification for anyone in Canada who purchases, handles, or services refrigerants. It's issued through HRAI, RSES, and other accredited bodies. Without it, you legally can't recover or charge refrigerant, which means you can't function as an HVAC technician. List it on your resume right after your trade ticket.
For commercial and ICI work, almost always yes. Most commercial HVAC systems include gas-fired equipment — boilers, rooftop units, makeup air. In Ontario, G2 gas fitter (TSSA) is the common working level; G3 is entry, G1 is highest. In BC, Alberta, and other provinces, Class B is the working equivalent. Residential techs can sometimes get by with G3, but G2 opens up commercial work.
The source-backed rows above carry the current classification context. Ontario splits the trade into 313A and 313D codes; Alberta has a single Refrigeration and Air Conditioning Mechanic designation. Apprenticeship length is roughly similar. Both lead to the Red Seal endorsement on passing the IP exam. The bigger practical difference is gas fitting — Ontario uses G1/G2/G3 through TSSA, Alberta uses Class A/B through Alberta Municipal Affairs.
Yes. List the manufacturers and systems you have worked with, such as Trane, Carrier, Daikin, Mitsubishi, York, Lennox, Liebert, Vertiv, Mammoth, Aaon, or Engineered Air. Add manufacturer training and BAS experience when you hold it.