Skilled building trades, electrician, HVAC, welding, and plumbing, share a common path. You can earn while you train through union apprenticeships (IBEW, UA, SMART, Iron Workers), finish journeyman with no debt, and reach six-figure specialty work within five to eight years. This guide compares cost, training time, earnings, and licensure across all four so you can choose the right starting point.
Which skilled trades are in this guide
Four trades anchor the skilled building trades cluster:
- Electrician: median $61,590 a year, top 10 percent $104,000 plus, union and open-shop apprenticeships available
- HVAC technician: median $51,390 a year, top 10 percent $82,630, EPA Section 608 required for refrigerant work
- Welder: median $50,000 a year, top 10 percent $73,000 plus, AWS certifications and code work drive earnings
- Plumber: median $62,000 a year, top 10 percent $103,000 plus, master plumber business owners earn the most
How they compare on cost, training time, and earnings
All four trades follow a similar economic pattern. Union apprenticeship is free and you earn during training. Community college runs $4,000 to $15,000 for a certificate or associate. Private trade school runs $8,000 to $30,000.
Training timeline by path. Union apprenticeship runs 3 to 5 years. Community college and trade school programs run 6 to 24 months, followed by on-the-job hours toward state licensure.
Median earnings cluster tightly between $50,000 and $62,000. Top 10 percent crosses $73,000 to $104,000 depending on trade. All four have clear six-figure specialty paths within 5 to 8 years.
What they have in common
These four trades share five structural features.
State journeyman licensure is required to work independently in most states. Hour requirements and exam structures vary state to state.
Apprenticeship is the strongest financial path when you can get in. You earn an apprentice wage from day one, the union covers classroom training, and you graduate with no debt plus 3 to 5 years of paid experience.
Specialty credentialing drives the earnings ceiling. ASME code welding, IBEW journeyman wireman, EPA universal refrigerant, master plumber, medical gas pipefitting, all unlock pay tiers above the general median.
Physical work is part of the job. Climbing ladders, pulling wire or pipe, working in attics or crawl spaces, lifting equipment. The work pays for the physical demands but you should plan for it.
GI Bill benefits apply to approved trade schools and registered apprenticeships across all four trades.
How to choose between them
If you like systems work and code-driven precision: electrician. The work scales from residential to industrial controls and renewable energy.
If you like equipment, refrigeration cycles, and seasonal high-demand peaks: HVAC. The trade is growing fastest with heat pump and refrigerant transitions.
If you like hands-on craft work and willing to travel for pay: welding. Pipeline, structural, and shipyard work pay top quartile but require travel.
If you like infrastructure, problem-solving on customer calls, and the potential to own a contracting business: plumbing. Master plumber contractors earn the most of any of these four trades.
If you cannot decide, electrician and plumbing have the highest median pay and clearest licensure paths. HVAC and welding offer faster entry through trade school but require self-driven specialty work to reach top quartile.
Common starting paths
Three paths apply across all four trades.
- Apply to a union Local apprenticeship in your area. Check IBEW for electrical, UA for plumbing and HVAC, SMART for HVAC and metal work, Iron Workers for welding. Most Locals have one application window per year.
- Enroll in a community college program. Search your state's accreditation lists. Apply for FAFSA aid first; community college costs are often largely covered by Pell Grant for eligible families.
- Apply for an open-shop apprenticeship through a local contractor. Many non-union contractors run their own registered apprenticeship programs. Check apprenticeship.gov for programs in your zip code.
If you are a veteran, all three paths are GI Bill eligible.
Six-figure specialty paths across the cluster
Common high-earning specialties span all four trades.
- Industrial work in refineries, chemical plants, and power generation pays 30 to 50 percent above general median for any of the four trades
- Code-qualified work (ASME pressure vessel, IBEW journeyman, master plumber) commands premium pay across employers
- Travel and shutdown work pays well above local market rates
- Business ownership (master electrician, master plumber, HVAC contractor, welding shop owner) caps out at $150,000 to $300,000 plus depending on volume
These paths are reachable within 5 to 8 years for trades workers who pursue them actively.
Run the math for your situation
If you are weighing one skilled trade against another, or against a four-year college path, run all options in your free CollegeLens plan. The plan shows you total cost, projected debt, and how each path looks against likely earnings.
-- Sravani at CollegeLens