You cut, form and hang the metal that moves air through every building. Paid to learn from the first week.
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What you earn and what it costs to get there.
Journeyman
$61,800
First-year apprentice
$38,630
Foreman or big-city local
$105,650
The national median is $61,800 a year, and the bottom tenth start near $38,630. The federal wage survey counts shop fabricators and site installers together under one occupation, so both ends of that range are real jobs in the same trade.
A set share of the journeyman rate
Often around half in year one, stepping up every six months or year
A Registered Apprenticeship is a paid job from day one. Your rate rises on a published schedule as your hours and classroom credits are signed off, so you know years ahead what you will be earning.
$105,650 or more
Foremen, detailers and journeymen in strong union cities
Overtime on shutdowns and tight construction schedules pays time and a half. Pay in this trade swings hard by metro area: the same skills are worth far more in a big union city than in a rural shop.
Tuition, fees, exams and kit. Not rent, food or travel
Apprenticeship training is funded by the employers and the union, so there is no tuition at either end and you earn a wage for the full four to five years. The low end is a basic set of hand tools, snips, hammers, seamers, tape and a bag. The high end adds boots and protective gear at $200 to $400 and the small application or testing fee some training centres charge. Nobody finishes this route with student debt. The hard part is not the money, it is getting accepted into a training centre, because places are limited and intakes are competitive.
This is one of the few careers on this site where nobody finishes with student debt. If you do take college classes first, file the FAFSA (Free Application for Federal Student Aid) so you are not paying cash for them.
Pension and annuity
Construction locals still run defined-benefit pensions, which have mostly disappeared from private work.
Health coverage earned by hours
You bank hours toward coverage rather than waiting for a salaried benefits package.
Overtime and shift premiums
Shutdowns and fast-track jobs run long days and pay for them.
Travel and subsistence pay
Data centers, hospitals and plants are often out of town, and the rate reflects that.
The exact path from high school to qualified.
An apprenticeship, not a degree. Roughly four days a week on the job and classroom time in the evenings.
High school diploma or equivalent
Grade 12
A diploma or a GED (high school equivalency credential) plus solid math is what most training centers ask for. Shop classes help your application.
Apply to an apprenticeship
Weeks to a year of waiting
A SMART (International Association of Sheet Metal, Air, Rail and Transportation Workers) local training center, or a contractor running its own registered program. Expect a math test, an interview and a physical.
Work and learn
4 to 5 years
Paid work beside a journeyman, plus classroom instruction in layout, welding, drawings and duct systems at a training center.
Certifications along the way
During the apprenticeship
Welding qualifications, rigging, and in many programs a specialty such as testing and balancing air systems.
Journeyman
After your hours
Full rate, a nationally recognized apprenticeship credential, and the option to run crews or move into detailing and estimating.
Geometry and trigonometry
Flat metal has to be laid out so it folds into a shape that fits. That is geometry, every day.
Shop or metalwork
Cutting, bending and welding practice is the single strongest thing on an application.
Drafting or technical drawing
You work from shop drawings and building plans, and reading them wrong wastes expensive metal.
Physics
Airflow, pressure and load all show up in duct design.
No state issues you a card that says sheet metal worker. What states do license is the business: in much of the country a company installing heating and cooling systems needs a licensed HVAC (heating, ventilation and air conditioning) contractor, and some states and cities license sheet metal contractors specifically. That matters if you ever want to run your own shop. Your own credentials are your welding qualifications, your safety training under OSHA (the Occupational Safety and Health Administration), and the nationally recognized certificate you earn at the end of a Registered Apprenticeship.
Union training centers
SMART (the sheet metal, air, rail and transportation workers union) locals run training centers across the country, free to apprentices.
Contractor apprenticeships
Non-union employers register programs with the federal or state apprenticeship office too.
Community college pre-apprenticeship
A semester of welding, blueprint reading and shop math that makes your application stand out.
Helmets to Hardhats
A program that routes people leaving military service into construction apprenticeships.
Things you don't need, but that help.
Certified welder
Tested to a code and a position. The fastest way to be worth more per hour in this trade.
Testing and balancing
Measuring and tuning the air in a finished building. Technical, well paid and always short of people.
Detailing in CAD (computer-aided design)
Turning an engineer's drawings into the exact shapes the shop will cut. An indoor branch of the trade.
Architectural metal
Roofs, flashings, cornices and custom panels. Closer to craft work, and visible when it is done.
Real fitness and steady hands
Sheet metal is light per piece and heavy per day, and a lot of it goes up on a ladder or a lift.
A driver's license and a reliable car
Jobs move, start early and are rarely on a bus route.
Comfort on a roof
Rooftop units are a big share of the work. You can find out how you feel about heights cheaply.
Basic computer skills
Modern shops cut with machines driven by drawing files, not by hand layout alone.
Shop workers run the cutting and forming machines indoors, in a controlled place with regular hours. Field workers hang and connect what the shop made, on site, in whatever weather and at whatever height the building has. Service technicians go back afterward to fix and balance systems. Most apprenticeships expose you to all of it, and a lot of people move between them over a career: field work for the money when young, shop or detailing later when the ladders stop being fun.
Day to day, pros and cons, where you'd work.
On site around 6:30am or in the shop by 7. In the shop you read a drawing, mark out flat metal, run it through a shear and a brake, and build the piece. In the field you carry duct up to a ceiling, hang it on rod and strap, seal the joints and connect the units on the roof. Lots of overhead work, lots of ladder time, hands in gloves against sharp edges. The job is measured in how much you got installed before the end of the shift.
The good
The hard parts
Things people don't tell you.
Sheet metal workers have been called tin knockers for more than a century, from the sound of a hammer setting a seam by hand. The metal is usually galvanized steel or aluminum now, and most seams are made by machine, but the name stuck.
Everything starts as a flat sheet. Getting a round duct, a tapered transition or a curved roof edge out of it is a layout problem solved with geometry before anyone picks up a tool. That is why the trade tests your math before it tests your hands.
SMART (the International Association of Sheet Metal, Air, Rail and Transportation Workers) represents both sheet metal workers and railroad crews. Two very different trades merged into one union in 2012, which is why the name is so long.
Buildings full of computers throw off enormous heat, and moving that heat out is a sheet metal job. The boom in large data centers has put crews on out-of-town work at premium rates in places that had little commercial construction before.
Last checked September 2026. Pay figures are typical full-time annual amounts in United States dollars, based on Bureau of Labor Statistics wage data and published pay scales. They vary by state, employer and experience. Tuition is for in-state students at public schools unless the card says otherwise.