What does a steamfitter do for your company, and what level do you need?
A steamfitter is your high-pressure piping hire.
BLS describes pipefitters and steamfitters as installing and maintaining pipes that may carry chemicals, acids and gases — mostly in manufacturing, commercial and industrial settings — with steamfitters specializing in systems for liquids or gases at high pressure.
The United Association's description of the work covers fabricating, installing, maintaining and repairing high-pressure systems that move steam, hot water and other industrial fluids, chilled water and compressed air included, with welding, rigging and hydrostatic and pneumatic testing in the mix.
Translated into a business line: this is the manufacturing, commercial and industrial side of the pipe trades — the settings BLS says most of this piping sits in.
The UA counts datacenters among steamfitter work, describing it as supporting advanced cooling and process piping for mission-critical operations.
That is why this hire is a quality and liability decision as much as a staffing one: a joint that fails its pressure test or a rigging job that goes wrong shows up in your warranty cost and your inspection record.
In federal data the trade is one occupation, and the BLS series differ in what they count.
The OEWS survey counted 465,840 wage-and-salary plumbers, pipefitters and steamfitters nationally in May 2025 — a count that excludes the self-employed — and put 340,140 of them in building equipment contracting, the industry employing the most and the category mechanical contractors sit in.
The Occupational Outlook Handbook, whose 2025 base of 510,600 jobs includes the self-employed, puts 65% of the occupation's jobs with plumbing, heating and air-conditioning contractors and 8% self-employed.
Hire by level, not by title.
BLS says most plumbers, pipefitters and steamfitters learn the trade through a 4- or 5-year apprenticeship with about 2,000 hours of paid on-the-job training a year plus technical instruction, and UA-registered programs include 2,000 hours of paid on-the-job training a year plus 216 hours of related classroom instruction.
In the licensing jurisdictions our research confirmed, the tiers have names — apprentice, journeyman, master — and each tier carries its own requirements.
Decide before you advertise what the hire must do on day one — run and document pressure tests independently, produce welds to your spec, rig and set heavy pipe, read mechanical drawings — and what you will train on your own systems and paperwork.
The worker-side description of the job lives in our guide to what a steamfitter does, and you can see how candidates shop for the role on the steamfitter job board.
Looking to hire? Post your steamfitter role on HVACHires and reach techs who already work in the trade.
Post a Steamfitter Job →What licence or certification must a steamfitter hold?
Our research found no national steamfitter licence, and the state map is a patchwork confirmed only in pieces.
Massachusetts licenses the work through a state bureau: its journeyman pipefitter licence requires 6,000 hours as a licensed pipefitter apprentice under a Massachusetts master pipefitter plus 450 hours of approved instruction, then an OPSI exam — and from November 9, 2026, every journeyman pipefitter applicant must complete a Bureau-approved 450-hour course and at least 6,000 clock hours as a licensed apprentice under the state's standardized pathway, with a hardship waiver for the old pathway.
Rhode Island requires journeyperson pipefitters to complete a 10,000-hour registered apprenticeship.
Minnesota licenses high-pressure piping — steam and process piping — statewide as master and journeyworker pipefitters through the Department of Labor and Industry, and unlicensed helpers may assist only if they are registered with DLI or in an approved apprenticeship and working under a licensed pipefitter.
Licensing can be city-level: Omaha licenses steamfitters at the master and journeyman level, each by exam, and Minneapolis requires masters and journeymen in the steam and hot water trade to hold a city Certificate of Competency card, for which applicants need at least four years of work experience.
Mechanical licences that include process piping (but not plumbing) were found in Michigan, Virginia, Oklahoma and New Mexico — New Mexico's MM-4 classification covers hydronic, steam, chilled water and process piping, boilers and chillers.
One cautionary example: New York City's Department of Buildings lists its skilled-trade licences, and "steamfitter" is not among them — the list includes Electrician, High Pressure Boiler Operating Engineer, Master Plumber and Welder — so a candidate claiming a "steamfitter licence" in NYC needs a second look at what document they actually hold.
One employer-side rule worth knowing before you staff up in Rhode Island: state law allows only licensed masters to run a mechanical-trades business there — no one may contract, advertise or employ others in pipefitting without a DLT master licence, and the master licence number must appear on ads, contracts, bids and permits.
Your verification routine is short.
Ask every candidate for licence numbers and the issuing state or city, then verify each one with the issuing authority and match the tier to the work you need done unsupervised — our walkthrough of how to verify plumbing license records covers the lookup step, and mechanical and pipe-trade licences work the same way.
Steamfitter licensing is state- and city-specific, and it changes.
The licences named above are the ones our research confirmed, not a complete map — elsewhere the work may be covered by plumbing or mechanical licences, or by local rules.
Before you post the job or extend an offer, confirm the current requirements with your state licensing board, or with the city or county that issues licences where licensing is local.
Where do you find steamfitter candidates?
One organized pool to check first: the United Association says it represents approximately 409,000 plumbers, pipefitters, sprinkler fitters, HVACR service technicians, welders and related trades in North America, and it lists steamfitters among its trades.
Its local apprenticeships are registered with the U.S. Department of Labor and include 2,000 hours of paid on-the-job training per year plus 216 hours of related classroom instruction.
In New York City the union identity is explicit — the Enterprise Association of Steamfitters Local 638 is the NYC steamfitters' union.
On the merit-shop side, Associated Builders and Contractors runs 67 chapters with more than 450 registered craft-training programs, and PHCC state chapters also operate registered programs — both are channels to hire apprentices out of, or to enroll the helpers you already have.
If you can host one, the Defense Department's SkillBridge program lets employers become training providers and host service members in their last 180 days of service.
BLS points apprenticeship seekers to state employment services, state apprenticeship agencies, local contractors, union-management apprenticeship committees and apprenticeship.gov.
Fish where the trade already is.
The states with the most plumber, pipefitter and steamfitter jobs in May 2025 were California (47,660), Texas (44,090), Florida (29,260), New York (23,210) and Illinois (16,750), and the busiest metros were: New York–Newark–Jersey City (21,040), Los Angeles–Long Beach–Anaheim (15,690), Chicago–Naperville–Elgin (12,750), Dallas–Fort Worth–Arlington (11,980) and Houston–Pasadena–The Woodlands (10,980).
Referrals are a channel you control, but all-referral recruiting has a legal edge: recruiting mainly by word of mouth through a mostly one-group workforce can itself be discriminatory if almost all hires come from that group.
Mix channels, and keep the ads clean — job ads may not show a preference for or against applicants by race, color, religion, sex, national origin, age 40+, disability or genetic information.
Much of the channel playbook is shared with the plumbing side — our guide to how to find plumbers to hire covers it in depth — and our hub for hiring HVAC and plumbing techs collects every employer guide.
Use the Post a Job button below when the posting is ready.
How much should you pay a steamfitter, and on what pay plan?
Start with the caveat every "steamfitter salary" number carries: BLS publishes no steamfitter-only wage.
Its OEWS program reports one combined occupation, Plumbers, Pipefitters, and Steamfitters (SOC 47-2152), so every federal figure below is the trade band, not a steamfitter-specific number.
Within that SOC, the median wage was $63,800 a year ($30.67 an hour) in May 2025, and the middle half of the occupation earned between $50,190 (25th percentile) and $85,110 (75th percentile).
Know what those numbers measure.
OEWS counts wage-and-salary workers only and excludes the self-employed; it excludes overtime pay, shift differentials and non-production bonuses such as sign-on bonuses, while including commissions and production bonuses.
A fitter who works heavy overtime can out-earn the printed figures — BLS does not publish by how much.
If you want the number for shops like yours, the industry cut is the closer one: within NAICS 238220, plumbing, heating and air-conditioning contractors, the occupation counted 330,570 jobs with an annual median of $63,010.
By top industry, May 2025 medians ran $71,660 in government (excluding education and hospitals), $65,770 in manufacturing, $63,270 in heavy and civil engineering construction and $63,010 at plumbing/HVAC contractors.
If you are hiring at helper level, budget from the trade's own helper series: the median wage for Helpers–Pipelayers, Plumbers, Pipefitters, and Steamfitters (SOC 47-3015) was $20.36 an hour, or $42,360 a year.
BLS publishes no "starting pay" statistic — these percentiles and the helper series are the closest proxies it has.
Travel terms belong in the offer, not in folklore: our research found no primary source for typical per-diem amounts — what it did find is that union per diem is set in each local's agreement — so write your own per-diem, lodging and mileage terms into the offer letter.
On the pay plan itself: hourly is the simplest to run compliantly, but flat-rate (per-job) and commission plans do not remove the overtime duty — the FLSA math does not change with the label.
A flat-rate tech is still owed overtime computed on total job pay divided by hours actually worked, plus half-time for each hour over 40.
Commissions count in the overtime regular rate, and a spiff schedule you announce in advance is a promised, non-discretionary bonus no matter what you call it.
Bonuses and commissions paid monthly or quarterly must be apportioned back over the weeks they were earned, with extra overtime owed for any week that had overtime hours.
The narrow overtime exemption sometimes mentioned for commission-heavy plans, section 7(i), applies only in a retail or service establishment, only when the regular rate exceeds 1.5 times the minimum wage and more than half of pay is commissions — and whether a shop like yours qualifies is decided case by case, so do not assume it covers your fitters.
For the full comparison, our HVAC technician pay plan guide owns that question.
You are competing in a growing trade: BLS projects employment in the SOC to change 6.8% from 2025 to 2035, with about 42,000 openings a year on average.
State-by-state figures sit on our steamfitter salary page; anchor your offer to your own metro before a candidate shows you a competitor's.
How do you screen and interview a steamfitter?
Write the job description before you advertise.
Under the ADA, a written description prepared before advertising or interviewing is evidence of which functions are essential — and for a steamfitter, that list doubles as your screening rubric: the systems the hire works on (steam, hydronic, process), the pressures and pipe sizes they run unsupervised, the weld processes they must hold quals for, the test-and-document duties, and the physical demands of the work.
The interview rules cut both ways.
Before an offer you may ask about licences, certifications, skills and work history, and you may ask candidates to describe or demonstrate how they would do a task.
You may state physical demands — lifting, ladder work — and ask whether the candidate can meet them.
You may not ask about past job injuries or workers' compensation history — "ever hurt your back on a job site?" is off-limits before an offer.
Then make them narrate real work.
Have the candidate walk through one recent steam or high-pressure job start to finish: how they read the drawings, what they did about supports and expansion, how the system was pressure-tested and what a pass looked like, what failed inspection, and what the fix was.
You are listening for method, not memorized code citations — hydrostatic and pneumatic testing is part of the UA's description of steamfitter work, so testing is a fair thing to ask a working fitter to narrate.
For welding, ask which weld tests and procedures each candidate is qualified on, and collect copies of the qualification records rather than taking "I can weld" at face value.
If a screening company runs the background check, the FCRA sequence applies: a stand-alone written disclosure before the report is ordered, a copy of the report and the "Summary of Your Rights Under the FCRA" before any adverse decision, and an adverse-action notice after.
Keep the screen targeted — EEOC guidance weighs the nature of the offense, the time elapsed and the nature of the job, with an individualized assessment.
And if a record makes you hesitate on someone you want, the DOL's Federal Bonding Program issues free $5,000 fidelity bonds covering the first six months of an at-risk hire's employment.
What are the red flags when hiring a steamfitter?
Most of these are checkable in an afternoon, which is the point — a red flag you can verify is a decision, not a vibe.
- Licence and weld paperwork does not clear. A licence number the issuing authority does not recognize, a name that does not match, qualification records that never arrive, or a claimed state licence tier you cannot verify with that state's board — a "steamfitter licence" from a city that issues no such licence is the extreme case, and New York City's is the cautionary example. Each of these ends the interview until it is explained.
- Pressure to be paid as a 1099 subcontractor for work that looks like employment. Under the FLSA, status turns on the economic realities of the relationship, not the label, and true independent contractors get no minimum-wage or overtime protection. Misclassification exposure follows the work arrangement, not the paperwork both parties signed.
- Vague about what their quals let them do. A fitter who cannot say which tasks they may perform unsupervised — which systems, which pressures, which welds — has either never worked inside a regulated scope or has worked around one.
- Dismissive of pressure tests and inspection paperwork. "We usually skip the hydro" where the spec calls for one becomes your liability — and your warranty cost — the day the hire signs a test report under your company.
- Cannot walk through a recent job. Layout choices, support and expansion details, test pressures, what failed, what the rework was — a working fitter narrates these without notes; a résumé-only candidate stalls.
How do you onboard a steamfitter in the first 90 days?
Our research points to no industry-standard ramp-up for a new fitter — the schedule is yours to set, and what follows is an example structure, not a benchmark.
One payroll rule comes first: ride-along and training time is paid work time.
The conditions for unpaid training are narrow — outside regular hours, truly voluntary, not directly job-related, no productive work — and a new hire's ride-along with a journeyperson fails them.
A workable shape: the first stretch paired with a journeyperson on your layout standards, material handling and paperwork; then supervised welds and pressure tests, with your senior fitter signing off the documentation; then solo pipework, once you have watched the hire run a full test-and-inspect cycle to your standard.
Do the registration paperwork in week one where the state requires it — in Minnesota, for example, unlicensed helpers on high-pressure piping may assist only if they are registered with DLI or in an approved apprenticeship and working under a licensed pipefitter.
Confirm your own state's registration step with the issuing board during the first week rather than after the first ticket.
If you pay a senior fitter to mentor the new hire, mind the overtime math: a mentor bonus or per-trainee stipend promised in advance is a non-discretionary bonus, and it belongs in the mentor's overtime regular rate.
Give the safety orientation the trade's own numbers.
In 2023–2024, plumbers, pipefitters and steamfitters recorded 144.5 days-away-from-work cases per 10,000 full-time workers against 86.6 for all occupations, with a DART rate of 211.7 — and BLS lists common injuries in the trade as cuts from sharp tools, burns from hot pipes and soldering equipment, and falls from ladders.
Those injury numbers are worth reading out loud at the safety orientation — they make the case for training on the hazards BLS names, not assuming they are handled.
If you run tech levels, write down the criteria for each step and the evidence for moving someone up.
Pay differences tied to documented seniority, merit or production are defensible under the Equal Pay Act; undocumented ones are how equal-pay claims start.
The cross-trade basics — paperwork, truck and tooling, ticket flow, check-in rhythm — are the same in both trades, and our guide to onboarding new technicians owns that checklist.
By the end of the first quarter, hold the same three artefacts for every fitter you hire: clean licence and qualification records on file, tickets that show solo work at the promised level, and a documented level review.
How do you keep a steamfitter once hired?
The strongest retention lever specific to this trade is the credential ladder itself — because in the pipe trades it is long, documented and portable.
Tie pay progression explicitly to the rungs you can verify: apprenticeship levels, licence tiers, weld qualifications.
Funding exam fees, course hours and study time is cheap next to a vacancy in a licensed seat — the Massachusetts journeyman pipefitter route alone requires 6,000 documented apprentice hours, and its application fee is $75.
A fitter who can see the next rung paid for has a reason to run it with you rather than for a competitor.
For the pay conversation, budget from a real number: BLS's Employment Cost Index shows private-industry wages and salaries for construction, extraction, farming, fishing and forestry occupations rose 3.9% over the 12 months ended June 2026, and for installation, maintenance and repair occupations 3.7%.
Label it what it is — private-industry wage growth for the occupation group, not a promised individual raise — and use it to keep your rates from drifting under market between reviews.
Remember what your fitters see when they look around: the occupation is projected to grow 6.8% through 2035 with about 42,000 openings a year, and BLS calls that much faster than average.
BLS also notes that most plumbers, pipefitters and steamfitters work full time, including nights and weekends, and are often on call for emergencies — so predictable scheduling, working rig and tooling, and a licence ladder that pays are what separate the shops that keep them from the ones that rehire them.
This page is employer career and business information, not legal advice. Confirm licensing and registration requirements with the state board — or the city or county — that issues them, and check pay-plan, classification and screening questions with an employment attorney before you roll them out.