On the federal numbers, HVAC is the faster-growing trade and the better-paying one for the typical worker: HVACR mechanics and installers median $61,010 a year against $53,750 for the welding category (May 2025), and HVAC work is projected to grow 10.9% through 2035 versus 2.4% for the welding category.
The better choice still depends on the work you want to do — this HVAC vs welding comparison lays out both sides.
HVAC vs welding: what each trade involves
O*NET defines the HVAC side of this comparison, Heating, Air Conditioning, and Refrigeration Mechanics and Installers (SOC 49-9021), as workers who install or repair heating, central air conditioning, HVAC, or refrigeration systems, including oil burners, hot-air furnaces, and heating stoves.
BLS's duty list for the trade covers installing, maintaining, and repairing HVACR systems; installing electrical components and wiring; inspecting and testing systems; repairing or replacing parts; recommending maintenance; and keeping records — and discussing malfunctions with customers.
That last one matters: O*NET rates "discuss heating or cooling system malfunctions with users to isolate problems or to verify that repairs corrected malfunctions" as the trade's highest-importance core task (importance 85), ahead of testing electrical circuits or components for continuity (83) and repairing or replacing defective equipment, components, or wiring (81).
O*NET's sample job titles inside the same occupation include AC Mechanic, AC Tech, HVAC Control Tech, HVAC Installer, and HVAC Mechanic.
BLS adds that some technicians specialize — in radiant heating systems, testing and balancing, or commercial refrigeration — and that some focus on installation while others repair and maintain systems.
Most work for contractors: in 2025, 68% of HVAC mechanic and installer jobs were with plumbing, heating, and air-conditioning contractors and 6% were self-employed (BLS counts including the self-employed).
The industries employing the most are led by Building Equipment Contractors with 305,330 jobs, followed by merchant wholesalers of durable goods (12,190) and fuel dealers (8,480).
The welding side of this page is BLS's Welders, Cutters, Solderers, and Brazers category (SOC 51-4121).
Our research vault carries task-level sourcing for the HVAC occupation but none for the welding category, so we describe it by where the work sits rather than invent a duty list: the industries employing the most welders, cutters, solderers, and brazers are manufacturers — fabricated metal product manufacturing (NAICS 3323 and 3324 only) employs 70,020 and machinery manufacturing (3331, 3332, 3334, and 3339 only) 56,750, with another 25,910 in the remaining fabricated-metal industries (3321, 3322, 3325, 3326, and 3329 only).
The state-by-state map differs too.
The HVAC category's most jobs are in Florida (39,160), California (35,130), Texas (34,730), New York (24,430), and Pennsylvania (15,880).
The welding category's most are in Texas (52,000), California (26,060), Ohio (20,330), Pennsylvania (17,850), and Florida (16,420).
Four states overlap; welding adds Ohio to its top five and HVAC adds New York.
If the HVAC side sounds like the work you want, our HVAC technician guide covers the role in depth — the rest of this page compares the two head to head.
Training and certification compared
Entry requirements differ in kind, not just length.
O*NET puts HVACR mechanics in Job Zone Three, "Medium Preparation Needed": most occupations in this zone require vocational training, related on-the-job experience, or an associate's degree.
One federal credential has the force of law behind it: under 40 CFR 82.161, the EPA requires any person who could reasonably be expected to violate the integrity of a refrigerant circuit while maintaining, servicing, repairing, or disposing of appliances containing CFC/HCFC or non-exempt substitute refrigerants (such as HFCs) to pass an exam from an EPA-approved technician certification program.
That certification is a federal refrigerant-handling requirement, not a state licence — and state HVAC licensing is a different layer again, under different names in different states ("ACR" in Texas, "Conditioned Air" in Georgia, "Mechanical" classes in states including Michigan and Iowa).
Industry credentials such as NATE, HVAC Excellence, NCCER, and ASSE are voluntary qualifications, not government licences.
Our HVAC licence guide walks the state ladder, with state pages behind it.
On the welding side, our research vault contains no federal certification requirement comparable to EPA 608 and no verified figures for standalone welding-school programs — their lengths, costs, or outcomes — so we won't invent any.
Which weld qualifications matter is for the employer to name: ask the contractors you would work for before you train for or pay for any test.
The two trades also meet inside one training system.
The United Association says its apprenticeships are registered with the Department of Labor, typically last five years, and cover plumbing, pipefitting, HVACR, welding, and fire protection — HVACR and welding are both tracks.
Federally, registered apprenticeship programs must use a progressively increasing schedule of wages, with an entry wage not below the FLSA minimum wage where applicable, or higher where another law or a collective bargaining agreement requires (29 CFR 29.5(b)(5)).
Confirm the requirements where you live
Pay compared: HVAC vs welder salary
Same series, same statistic: BLS's OEWS May 2025 annual wage percentiles for the two categories, released May 15, 2026.
| Annual wage (OEWS May 2025) | HVACR mechanics and installers (SOC 49-9021) | Welders, cutters, solderers, and brazers (SOC 51-4121) |
|---|---|---|
| 10th percentile | $40,050 | $39,240 |
| 25th percentile | $48,360 | $46,790 |
| Median | $61,010 | $53,750 |
| 75th percentile | $77,060 | $63,010 |
| 90th percentile | $95,210 | $77,530 |
The HVAC category is higher at every published percentile, from $40,050 against $39,240 at the 10th to $95,210 against $77,530 at the 90th.
The medians — $61,010 versus $53,750 — are the headline numbers on the "HVAC vs welder salary" question, and the gap widens toward the top of the distribution.
Each geography list below is its own ranking on the same measure (annual median wage by area).
The highest-paying metro areas for the HVAC category are Fairbanks-College, AK ($93,820), Anchorage, AK ($85,620), Napa, CA ($84,570), San Jose-Sunnyvale-Santa Clara, CA ($82,050), and Seattle-Tacoma-Bellevue, WA ($80,100).
For the welding category they are Lima, OH ($85,790), Urban Honolulu, HI ($81,120), Alaska's nonmetropolitan area ($81,000), Fairbanks-College, AK ($80,210), and the Balance of Nevada nonmetropolitan area ($79,810) — Alaska places sit near the top of both lists.
The welding category's top-paying states are Alaska ($80,840), Hawaii ($79,000), Connecticut ($64,880), Wyoming ($63,820), and Washington ($63,020).
The highest-paying industries inside each category are small niches, not typical jobs.
For HVACR mechanics and installers they are Computer Systems Design and Related Services ($115,910 median), Scheduled Air Transportation ($114,080), and Natural Gas Distribution ($105,630).
For the welding category they are Scheduled Air Transportation ($137,730), Other Pipeline Transportation ($106,170), and Performing Arts Companies ($104,220).
Three reading rules for any HVAC vs welder salary comparison.
First, these are categories, not titles: the HVAC side folds refrigeration mechanics into the same SOC — O*NET retired the separate refrigeration-installer code and directs users to the combined code — so neither figure isolates one job.
Second, know what OEWS measures: it excludes overtime pay, shift differentials, and nonproduction bonuses such as sign-on pay, and excludes the self-employed; it includes commissions, production bonuses, and tips; and its annual figures assume a 2,080-hour year.
Third, the full state table lives on our HVAC technician salary page.
A category median is not an offer
Travel and working conditions
BLS's schedule notes cover the HVAC side: most HVAC technicians work full time, schedules may include evenings or weekends, they may be on call for emergencies, and they sometimes work overtime or irregular schedules during peak heating and cooling seasons.
The work also happens where the systems are — 68% of HVAC mechanic and installer jobs were with plumbing, heating, and air-conditioning contractors in 2025, and the trade's highest-importance core task is talking through malfunctions with the person using the system.
Our vault carries no comparable schedule or on-call data for the welding category, so we won't describe its conditions beyond the employer counts above.
Where the jobs are, the two categories' five biggest-job metros share three names.
The HVAC category's most jobs are in the New York-Newark-Jersey City metro (21,820), Dallas-Fort Worth-Arlington, TX (10,910), Los Angeles-Long Beach-Anaheim, CA (10,720), Miami-Fort Lauderdale-West Palm Beach, FL (9,140), and Washington-Arlington-Alexandria, DC-VA-MD-WV (8,730).
The welding category's most are in Houston-Pasadena-The Woodlands, TX (15,850), Dallas-Fort Worth-Arlington, TX (10,620), Chicago-Naperville-Elgin, IL-IN (9,320), Los Angeles-Long Beach-Anaheim, CA (7,850), and New York-Newark-Jersey City, NY-NJ (5,780).
New York leads the HVAC list by a wide margin; Houston leads the welding list.
On travel specifically, our research does not quantify travel work in either trade: the BLS sources behind this page publish wages, employment counts and projections, not travel patterns.
Treat any travel claim attached to either trade as something to verify with the employer making it.
Which trade has steadier local work?
BLS's Employment Projections for 2025–35 put HVAC ahead on growth: the HVACR category is projected to grow 10.9% (from 440.9k to 489.1k jobs, including the self-employed) with about 40,600 openings a year on average — growth BLS describes as "much faster than the average."
The welding category is projected to grow 2.4% (437.7k to 448.1k jobs, including the self-employed) with about 40,300 openings a year.
The average for all occupations is 3.5%, so HVAC is the only one of the two above it.
The openings counts are nearly identical — about 40,600 against about 40,300.
The two categories are also close in size: 409,670 and 416,210 wage-and-salary jobs respectively.
What sits behind them differs: BLS expects commercial construction, including data centers, and residential construction to drive HVAC employment growth, along with more sophisticated climate-control systems and retrofit/replacement work, and many openings come from replacing workers who retire or change occupations.
Our vault has no comparable driver list for the welding projection.
The local texture differs too.
HVAC's employer base is contractors — 68% of jobs were with plumbing, heating, and air-conditioning contractors in 2025 — while the welding category's largest employer groups are manufacturers.
BLS's HVAC notes point to replacement demand — many openings come from workers retiring or changing occupations — and to peak heating and cooling seasons that bring overtime or irregular schedules.
What steadiness looks like inside manufacturing is not something our research quantifies.
As a tiebreaker, then, the federal measures favor HVAC: the higher median, the faster growth, and similar openings counts.
"Steadier" also depends on the work you want day to day — our is HVAC a good career evaluation weighs the honest pros and cons, and the HVAC technician guide covers the role itself.
If you go welding-first instead, the numbers above are the bar the trade starts from.
Career information, not legal advice. Pay and outlook figures are BLS's May 2025 and 2025–35 estimates for broad occupational categories and change with each release; certification and licensing requirements come from EPA regulations and state or local law — confirm current requirements with the EPA-approved program, your state licensing board, or the city/county where licensing is local.