How to become an HVAC technician in Canada: apprenticeship, gas, refrigerant, and Red Seal

The HVAC tickets you will see referenced in this guide:

• Refrigeration and AC Mechanic (313A in Ontario): commercial and industrial refrigeration, cooling, and combined heating-cooling systems.
• Residential Air Conditioning Systems Mechanic (313D in Ontario): residential AC only, shorter, no Red Seal.
• Sheet Metal Worker: ductwork, ventilation, and air distribution. A separate Red Seal trade.
• Gasfitter: gas-fired equipment. In Ontario this is a TSSA certification, not a Red Seal apprenticeship. In BC, Alberta, and several other provinces it is a Red Seal trade with Class A and Class B levels.
• Refrigerant handling (ODP card): a separate short certification to buy and handle refrigerants in most provinces.

If you only hold one of these, you can only legally do that scope.

What does a refrigeration and AC mechanic do?

Plans, lays out, installs, starts up, connects, maintains, services, repairs, tests, verifies, commissions, and decommissions refrigeration and air conditioning systems and their electronic components and accessories. The work includes installing refrigerant piping, checking efficiency, pressures, and controls, replacing defective components, and charging systems. It spans supermarkets and cold storage, chillers, rooftop units, walk-ins, commercial buildings, and residential systems where the scope overlaps.

This guide is not a job board, a training school, or a licensing authority. It points you to the authority that registers apprentices and issues certificates in your province.

How does the 313A apprenticeship work?

The pattern is consistent across Canada, even though hours and authorities change by province.

• Find a sponsor. An employer, or a union or group sponsor, with a qualified journeyperson who agrees to train you. This is usually the hardest step.
• Register as an apprentice with your provincial or territorial apprenticeship authority and sign a training agreement.
• Work and learn. Most of the apprenticeship is paid on-the-job training. You log hours and competencies, and your journeyperson signs them off.
• Attend in-school technical training in blocks, typically 3 to 4 levels, covering the refrigeration cycle, electrical and electronic fundamentals, piping, brazing and welding, psychrometrics, heat-load calculations, air distribution, and controls.
• Finish and certify. Complete the hours and levels, then write your provincial exam. Where offered, the Red Seal exam adds the national endorsement.

Entry requirements are set by each authority and by employers, who often ask for more than the minimum. Other provinces set their own entry requirements. For example, Alberta lists English, Math, and Physics/Chemistry for 313A. Check your province and do not assume Ontario's entry applies nationally.

Already working in refrigeration without a certificate? Most provinces have a trade-qualifier or challenger route, but required hours are higher. For example, Saskatchewan lists 6 years and 10,800 hours for tradesperson eligibility for the interprovincial exam, versus 4 years and 7,200 hours for apprentices, with a 70% pass mark. Ask your authority whether you qualify.

Is 313A certification compulsory in my province?

It varies more than for electricians. Check your province.

• Compulsory in British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, Quebec, New Brunswick, and Nova Scotia. Saskatchewan's case is explicit: SATCC lists five compulsory apprenticeship trades, and Refrigeration and Air Conditioning Mechanic is one of them.
• Voluntary for certification in Newfoundland and Labrador, Prince Edward Island, Yukon, Northwest Territories, and Nunavut. Red Seal is still the mobility standard. Employers and permit rules may still require registered apprenticeship in practice, so check the provincial authority before taking work.

In a compulsory province you must be a registered apprentice or a certified journeyperson, or hold a provisional or temporary authorisation where one is offered, to do the work.

Which rules apply in my province or territory?

Use this table as a starting point, then read the matching notes below. Status applies to Refrigeration and Air Conditioning Mechanic certification. Gas, refrigerant, electrical, contractor, safety, and permit rules are separate.

What are the rules in each province and territory?

British Columbia: SkilledTradesBC

• Status: Compulsory. Refrigeration and Air Conditioning Mechanic is a Skilled Trades Certification trade in BC, alongside Gasfitter Class A and B and Sheet Metal Worker. Workers must be registered apprentices, trade qualifiers, or certified journeypersons.
• Gas in BC: Gasfitter Class A and B are their own compulsory Red Seal trades. A 313A certificate alone does not authorise gasfitting beyond your gas class.
• Start here: SkilledTradesBC, through a sponsor employer.

Alberta: Apprenticeship and Industry Training

• Status: Compulsory certification. Red Seal.
• Structure: 4 periods. Each period is about one year: 1,560 hours of work experience plus 8 weeks of classroom instruction, with a theory exam per period. Classroom instruction for 313A is offered at NAIT and SAIT.
• Alberta's second certificate: The 313A program includes Gasfitter, Class B. Apprentices who complete all 313A requirements receive two Alberta journeyperson certificates, but must write both interprovincial exams to earn both Red Seal endorsements. Do not assume the second certificate travels automatically. Check the destination province.
• Start here: Alberta Apprenticeship and Industry Training, with a sponsor agreement and a qualified mentor.

Saskatchewan: SATCC

• Status: Compulsory certification. Red Seal. One of SATCC's five compulsory apprenticeship trades.
• Structure: Apprentice requirements are 4 years and 7,200 hours. Tradesperson (challenger) requirements are 6 years and 10,800 hours. There is no practical exam, and the interprovincial exam pass mark is 70%.
• Start here: SATCC, through a sponsor employer.

Manitoba: Apprenticeship Manitoba

• Status: Refrigeration & Air Conditioning Mechanic (Commercial/Residential) is a compulsory trade on Manitoba's designated-trades list.
• Start here: Apprenticeship Manitoba, through a sponsor employer. Get the current level and hour structure from Apprenticeship Manitoba before quoting it.

Ontario: Skilled Trades Ontario

• Status: Compulsory trade (Refrigeration and Air Conditioning Systems Mechanic, 313A). Red Seal.
• Structure: 9,000 hours total, made up of 8,280 hours on the job and 720 hours in school, across 3 levels. Check Skilled Trades Ontario for the current entry requirement.
• Rule: To work in this compulsory trade in Ontario you must hold a Certificate of Qualification, a Provisional Certificate of Qualification, or be an apprentice under a valid Registered Training Agreement.
• Related trade, not merged: Residential Air Conditioning Systems Mechanic (313D) is also compulsory in Ontario. It is not Red Seal and is shorter: 4,500 hours total (4,020 on the job and 480 in school, 2 levels), for residential AC systems only, including geoexchange systems.
• Start here: Skilled Trades Ontario. The union pathway in Ontario is commonly through UA Local 787 for refrigeration. Check the local's current intake. It is not the only route.

Quebec: MESS and CCQ

• Status: A different system. Do not copy the other provinces' wording into Quebec.
• How it works: Outside construction, qualification is through MESS. For construction work you also need a CCQ competency certificate. For a refrigeration mechanic, the CCQ journeyperson route generally requires a valid MESS qualification certificate in refrigeration systems (200 watts or more), a CCQ-recognised study program, at least 8,000 hours of experience including applicable training credits, and the CCQ general safety course.
• Hours: Quebec's measurement puts its HVAC total at about 8,000 hours. Use the CCQ and MESS route, not a generic four-year apprenticeship.
• Start here: MESS for qualification, CCQ for construction competency. If you are moving to Quebec with a Red Seal from elsewhere, ask CCQ about recognition for construction work.

New Brunswick: Apprenticeship and Occupational Certification Branch

• Status: Compulsory certification. Red Seal.
• Start here: New Brunswick Apprenticeship and Occupational Certification, through a sponsor employer. The Atlantic curriculum is shared in part across the Atlantic provinces.

Nova Scotia: Nova Scotia Apprenticeship Agency

• Status: Compulsory certification. Red Seal.
• Start here: Nova Scotia Apprenticeship Agency, through a sponsor employer.

Prince Edward Island: Apprenticeship Section

• Status: Voluntary for certification. Red Seal. Check the PEI Apprenticeship Section before taking work, because employer and permit requirements may still apply.
• Start here: PEI Apprenticeship Section, through a sponsor employer.

Newfoundland and Labrador: Apprenticeship and Trades Certification Division

• Status: Voluntary for certification. Red Seal.
• Structure: The apprenticeship term is 4 years and 7,200 hours, with a pre-employment block and 4 levels. Check the current plan of training for block lengths before quoting them.
• Start here: Apprenticeship and Trades Certification Division, through a sponsor employer.

Yukon, Northwest Territories, and Nunavut

• Status: Voluntary for certification. Red Seal is the mobility standard. Registration is through the territorial authority, and technical training is often delivered in a partner province.
• Start here: Yukon Education (Apprenticeship Training); Government of the Northwest Territories (Apprenticeship, Trades and Occupations); Nunavut (Apprenticeship, Trade and Occupations Certification). Ask where school blocks are held.

Do I also need gas, refrigerant, or sheet metal tickets?

Gas: the biggest provincial split in HVAC

• Ontario (TSSA, not Red Seal): Gas Technician G3 works on gas equipment under G2 or G1 supervision. G2 installs, inspects, repairs, and maintains gas lines and equipment up to and including 400,000 BTUH, and is the standard certification for most HVAC gas work. G1 works without a BTU cap, after G2 experience and additional requirements. The TSSA exam pass mark is 75%. Training rules require at least 75% in each course or module and 80% attendance, the exam must be written within 1 year of completing training, and three failed attempts mean retaking training. Fees are not quoted here because published sources conflict. Check the TSSA site for the current fee.
• BC and Alberta (Red Seal Gasfitter): Gasfitter Class B covers natural gas and propane equipment up to 400,000 BTU. Class A has no BTU cap. In Alberta, Gasfitter Class B is a 2-period compulsory apprenticeship and is earned alongside Plumber and 313A. In BC, Gasfitter Class A and B are compulsory trades.
• Saskatchewan, Manitoba, and the Atlantic provinces: A Gasfitter Red Seal exists with broadly similar Class A and Class B scope, but the regulator, compulsory status, and class names vary. Check your provincial apprenticeship authority and your provincial gas safety regulator before doing gas work.
• Quebec: Gas construction work needs the applicable RBQ contractor licence, and workers need the applicable qualification certificate administered by MESS. Certificate classes and permitted scopes must be confirmed on the current Quebec pages before work. RACM certification alone is not a gas authorisation.

Never present a 313A certificate, an ODP card, or a plumbing certificate as a gas licence.

Refrigerant handling: ODP card

In most provinces you need an Ozone Depletion Prevention (ODP) card or refrigerant-handling certification to buy and handle refrigerants. It is typically a short course through a government-approved provider and is separate from the 313A apprenticeship. If you work on refrigeration you need both: the trade certificate for the work, and the ODP card for the refrigerant. Check your provincial environment or ODS regulator for the current card and renewal rules.

Sheet Metal Worker: the ductwork trade

Sheet Metal Worker is a separate Red Seal trade, typically about 9,000 hours in several provinces. It covers fabrication and installation of ductwork, ventilation, and air distribution systems. It is compulsory in BC. In other provinces compulsory status varies, so check your authority before stating it. HVAC companies often employ sheet-metal journeypersons for ductwork, or 313A mechanics work alongside them within their own scope. Do not assume a 313A mechanic may do all sheet-metal work, or the reverse, without checking trade scope in your province.

Heat pumps: no standalone licence

Heat-pump installation and service sit across 313A (refrigeration cycle, charging, controls), electrical scope where it falls within the electrician's trade, sheet-metal scope for ducted systems, and gas scope for hybrid or dual-fuel systems. That is why this guide covers heat pumps through the HVAC trades instead of having its own apprenticeship. To work on heat pumps, pick the trade whose scope covers the work you want to do, complete that apprenticeship, and add manufacturer and low-GWP or A2L refrigerant training as it becomes the industry standard.

How do I find an apprenticeship sponsor?

This is the step most people get stuck on.

• Apply directly to refrigeration, HVAC, and mechanical contractors, not just to job boards. Small and mid-size shops hire most apprentices.
• Ask unions. UA locals, including UA Local 787 in Ontario for refrigeration, and Sheet Metal Workers' locals run apprenticeship intake in many provinces.
• If you cannot get a registered spot right away, you can start as a helper or labourer. Confirm with your provincial authority that those hours will count, and register as soon as an employer agrees to sponsor you. Hours worked before registration often do not count.
• When you talk to an employer, ask: Who will be my journeyperson trainer? Will you sign a training agreement? How are school blocks handled? Which gas and refrigerant tickets can I earn on the job?
• Keep a written record of every employer, start date, and hour. Your logbook is your proof.

This guide does not guarantee a sponsor, a seat, or a job. This guide does not list schools, pre-apprenticeship programs, or employers as destinations.

How is an HVAC apprenticeship paid for?

Apprentices earn while they learn, with pay typically rising by level as a percentage of the journeyperson rate. During in-school blocks you are usually not on the employer's payroll in the same way. Many apprentices use Employment Insurance (EI) for apprentices in technical training, the Canada Apprentice Loan (interest-free, up to $4,000 per period of technical training and $20,000 in total), provincial loans, tax measures, and tool supports.

The federal government has announced three new supports, but they are not all open yet. As of October 27, 2026, the Apprenticeship Training Grant is expected to launch in spring 2027 for eligible weeks of mandatory technical training beginning on or after January 3, 2027, with a $400 weekly top-up in addition to EI. The $5,000 Red Seal Completion Bonus is expected to open later in 2026 for eligible certifications earned on or after April 1, 2025. Apprenticeship continuation support has been announced, but application details are not yet published. Treat all three as announced until the Canada.ca application page is live and confirms eligibility. The former Apprenticeship Incentive and Completion Grants closed March 31, 2025.

Check the Government of Canada's supports for apprentices, your provincial authority's financial-assistance page, and your training provider's tuition page when you apply.

Does my certificate still count if I move provinces?

Red Seal helps you move, but it does not erase local rules.

• A Red Seal endorsement supports recognition of your RACM qualification across Canada. It does not itself authorise work in every jurisdiction. Your provincial certificate, gas class, ODP card recognition, contractor licence, and (in Quebec) CCQ competency certificate may need separate recognition or replacement.
• Gas is the sharpest example. A TSSA G2 in Ontario is not automatically a Gasfitter Class B in Alberta or BC, and the reverse is also true. Ask the destination gas regulator before you take gas work after a move.
• Before you move, ask the destination authority: Do you recognise my Red Seal? Does my gas class transfer, or do I need to challenge or re-certify? Do I need a local contractor licence to pull permits or run a business?
• If you are already certified and moving, ask about labour mobility or trade-qualifier recognition rather than starting a new apprenticeship from zero.

Frequently asked questions