An honest comparison of 421A, 310T, 309A, 310S, 313A, 456A, 306A, and 442A — wages, demand, work lifestyle, and which trade fits your goals and personality.
Choosing a Red Seal trade determines how you spend your working hours, who employs you, how much you earn, and what your career path looks like twenty years from now. The good news: ESDC projects a strong or moderate risk of labour shortage nationally over 2024–2033 for all eight trades covered here, and each has a Job Bank median wage of $29.89 an hour or more. The question is which one fits you.
Here is an honest, detailed comparison of eight Red Seal trades — based on Job Bank wage data (2023–2024, updated November 2025), ESDC labour market projections, and what the daily work actually looks like.
| Trade | Apprenticeship (Ontario, BC, Alberta) | Hourly Wage, Canada (Job Bank low – high, 2023–2024) | Highest Provincial High (Job Bank, 2023–2024) |
|---|---|---|---|
| 421A – Heavy Equipment Tech | 3–4 years | $23.87 – $55/hr | $65/hr (AB) |
| 310T – Truck & Transport Mech | 3–4 years | $19 – $43.27/hr | $49/hr (BC) |
| 309A – Construction Electrician | 4–5 years | $20 – $48/hr | $50.50/hr (ON) |
| 310S – Automotive Service Tech | 4 years | $19 – $43.27/hr | $49/hr (BC) |
| 313A – HVAC & Refrigeration | 4–5 years | $22 – $56/hr | $62/hr (BC) |
| 456A – Welder | 3 years | $22 – $47/hr | $54/hr (NL) |
| 306A – Plumber | 4–5 years | $21 – $46/hr | $50.38/hr (ON) |
| 442A – Industrial Electrician | 4–5 years | $28 – $54/hr | $68/hr (AB) |
Heavy equipment technicians service, diagnose, and repair construction, mining, and forestry equipment — excavators, bulldozers, graders, haul trucks, scrapers, and cranes. Alberta's occupational profile says the working environment varies considerably from one job to another: some heavy equipment technicians work in modern laboratories, others at construction or industrial sites, sometimes outdoors in all types of weather, and travel requirements vary.
Job Bank's Canada range for heavy-duty equipment mechanics is $23.87–$55.00/hr (median $37.12, 2023–2024 data). Job Bank's high wage is $65.00/hr in Alberta, $55.50 in BC and $51.50 in Saskatchewan.
→ 421A Career Guide → 421A Salary Guide → 406 Practice Questions
Truck and transport mechanics inspect, diagnose, repair and maintain commercial trucks, emergency vehicles, buses and other road transport vehicles (red-seal.ca). The trade covers diesel engines, air brake systems, emissions systems (DPF/SCR/DEF) and drivetrain. Work settings range from shops to field service at fleets.
Truck and transport mechanics share a Job Bank occupation (NOC 72410) with automotive service technicians. ESDC projects a moderate risk of labour shortage for this group nationally over 2024–2033, and Job Bank's 3-year outlook (updated December 2025) rates prospects as good in Saskatchewan, Nova Scotia and PEI, moderate in Ontario, Alberta and BC, and limited in Quebec. Wages are lower than for 421A or 309A: the Job Bank Canada median for NOC 72410 is $29.89/hr (2023–2024 data), against $37.12 for heavy-duty equipment mechanics and $35.00 for construction electricians.
→ 310T Career Guide → 310T Salary Guide → 161 Practice Questions
Construction electricians install, maintain, and repair electrical systems in residential, commercial, and industrial settings. The trade is governed by the Canadian Electrical Code (CEC) and regulated at the provincial level. Unionized electricians, for example members of International Brotherhood of Electrical Workers (IBEW) locals, are paid under collective agreements that set wage rates and benefits for each local.
Job Bank's Canada median for construction electricians is $35.00/hr (2023–2024 data), below heavy-duty equipment mechanics ($37.12) and refrigeration and air conditioning mechanics ($37.50); industrial electricians (442A) are a separate trade with a median of $42.00. ESDC projects a moderate risk of labour shortage for construction electricians nationally over 2024–2033.
→ 309A Career Guide → 309A Salary Guide → 131 Practice Questions
Automotive service technicians diagnose, service, and repair passenger vehicles and light trucks. The trade covers engine management, brakes, transmission, suspension and steering, HVAC, and increasingly advanced driver assistance systems (ADAS) and electric/hybrid drivetrains.
ESDC projects about 52,600 job openings over 2024–2033 for the occupation 310S shares with 310T (NOC 72410), second among the trades compared here after construction electricians (about 56,300). Average wages are lower than for heavy-duty equipment mechanics: Job Bank's Canada average for NOC 72410 (automotive service technicians, truck and bus mechanics) is $30.34/hr, against $38.89 for heavy-duty equipment mechanics (2023–2024 data). The gap at the top end is not narrowing: Job Bank's Canada high rose from $43.00 to $43.27/hr for NOC 72410 and from $53.85 to $55.00 for heavy-duty equipment mechanics between the 2022–2023 and 2023–2024 data.
→ 310S Career Guide → 310S Salary Guide → 139 Practice Questions
Refrigeration and AC mechanics install, service, and maintain HVAC and refrigeration systems ranging from residential split systems to large commercial refrigeration arrays and industrial ammonia process systems. Alberta's occupational profile says refrigeration and air conditioning mechanics typically work 40 hours a week, year round.
Job Bank does not publish wages by sector for this trade: its Canada range for refrigeration and air conditioning mechanics is $22.00–$56.00/hr (median $37.50), and the highest provincial high is $62.00 in BC (2023–2024 data). The 2024 Red Seal standard notes amendments to Canada's Ozone-depleting Substances and Halocarbon Alternatives Regulations to reduce the supply of HFCs.
→ 313A Career Guide → 313A Salary Guide → 115 Practice Questions
Welders join metal using SMAW (stick), GMAW (MIG), GTAW (TIG), FCAW (flux-core), and oxy-fuel processes. The trade spans structural fabrication, pipeline work, pressure vessels, shipbuilding, and maintenance welding in oil & gas. Work settings range from controlled fab shops to outdoor pipeline corridors and offshore platforms.
The 456A apprenticeship is 3 levels or periods, about 3 years, in Ontario, BC and Alberta. Wage range is broad: Job Bank's Canada range for welders is $22.00–$47.00/hr (median $30.00), and Job Bank's high wage is $52.18 in Alberta and $51.87 in BC (2023–2024 data). Job Bank does not publish separate figures for pipeline or pressure welders.
→ 456A Career Guide → 456A Salary Guide → 125 Practice Questions
Plumbers install, maintain, and repair DWV (drain-waste-vent) systems, water supply lines, gas piping, and fire suppression systems in residential, commercial, and industrial settings. The trade is governed by the National Plumbing Code (NPC) and provincial plumbing regulations. Work spans new construction, renovation, service calls, and industrial maintenance.
ESDC projects a moderate risk of labour shortage for plumbers nationally over 2024–2033, with about 22,800 job openings, and Job Bank's 3-year outlooks range from Good in New Brunswick, Nova Scotia and Prince Edward Island to Very limited in Quebec.
→ 306A Career Guide → 306A Salary Guide → 130 Practice Questions
Industrial electricians install, maintain, and troubleshoot electrical systems in manufacturing plants, refineries, mines, pulp mills, and food processing facilities. Unlike 309A construction electricians who primarily install new systems, 442A industrial electricians focus on maintaining complex industrial equipment — PLCs, motor control centres, VFDs, instrumentation loops, and hazardous location wiring. The trade requires deep understanding of both electrical theory and industrial control systems.
Job Bank's median wage for industrial electricians is $44.00/hr in Alberta, $49.00 in Saskatchewan and $45.00 in BC, with high wages of $68.00, $57.78 and $54.95 respectively (2023–2024 data). Alberta's $68.00 is the highest provincial high wage of the eight trades compared here, although the Canada-wide high for industrial electricians ($54.00) is below those for refrigeration and air conditioning mechanics ($56.00) and heavy-duty equipment mechanics ($55.00). ESDC projects a moderate risk of labour shortage for industrial electricians nationally over 2024–2033.
→ 442A Career Guide → 442A Salary Guide → 130 Practice Questions
| If you want… | Best fit | Runner-up |
|---|---|---|
| Maximum earning potential (top end) | 442A (Alberta high $68/hr, Job Bank 2023–2024) | 421A (Alberta high $65/hr) or 313A (BC high $62/hr), Job Bank 2023–2024 |
| Strongest shortage risk (ESDC 2024–2033) | 421A or 313A (strong) | The other six (moderate) |
| Most projected job openings (ESDC 2024–2033) | 309A (about 56,300) | 310S/310T (about 52,600, one occupation) |
There is no objectively "best" Red Seal trade. The highest-paying option for one person is the worst lifestyle fit for another. Every trade on this list has genuine strengths and genuine tradeoffs.
One way to choose: start with the work environment and daily tasks, not the wage numbers. If you hate working outdoors, find out how much of a 421A job is field work before you commit. If you dislike detailed code-based work, 309A will feel like a grind whatever it pays. Pick the trade where the actual day-to-day work sounds interesting — then build your skills and certifications within that trade.
Each trade has a free practice quiz on this site: the eight compared above, plus 308A Sheet Metal Worker, 420B Ironworker and Gasfitter (Class A).
By Job Bank's 2023–2024 wage data (updated November 2025), industrial electricians (442A) have the highest Canada median of the eight trades compared here at $42.00/hr and the highest provincial high at $68.00/hr in Alberta. Heavy-duty equipment technicians (421A) reach $65.00/hr at the Alberta high, and refrigeration and air conditioning mechanics (313A) $62.00/hr at the BC high. Construction electricians (309A) have a Canada median of $35.00/hr, and automotive service technicians and truck and transport mechanics (310S/310T, one Job Bank occupation) $29.89/hr.
We found no official ranking of Red Seal trades by number of employers. ESDC's Canadian Occupational Projection System does project job openings by occupation for 2024–2033: about 56,300 for construction electricians (309A), 52,600 for automotive service technicians, truck and bus mechanics and mechanical repairers (310S/310T, one occupation), 26,500 for heavy-duty equipment mechanics (421A), 25,600 for welders (456A), 22,800 for plumbers (306A), 21,800 for refrigeration and air conditioning mechanics (313A) and 14,300 for industrial electricians (442A). Openings are not the same as shortage risk: ESDC rates 421A and 313A at a strong risk of shortage and the others at a moderate risk. Job Bank's 3-year outlooks (updated December 2025) vary by province, so check yours before deciding.
We found no official ranking of trades for outdoor or remote work, and the setting depends on the employer. Alberta's occupational profiles describe it this way: some heavy equipment technicians work in modern laboratories, others at construction or industrial sites, sometimes outdoors in all types of weather, and travel requirements vary; electricians often must be willing to travel to where the work exists, and those who work outdoors may work from scaffolds; refrigeration and air conditioning mechanics work in compressor rooms and on rooftops as well as in clean computer rooms; and most automotive service technicians work a 40-hour, 5-day week (alis.alberta.ca, working conditions updated March 31, 2020).
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