How to Become a Boilermaker

Boilermakers assemble, install, maintain, and repair boilers, closed vats, and other large vessels that hold liquids and gases. They work in power plants, refineries, chemical plants, and on ships. The trade involves welding, rigging, blueprint reading, and working with high-pressure systems that must meet strict safety codes. The work is industrial in nature and often involves travel to job sites such as power plants and refineries during shutdowns and turnarounds. Boilermakers must be skilled welders and understand metallurgy, thermal expansion, and pressure vessel codes (ASME). Boilermaking is a smaller but well-compensated trade. The combination of specialized welding skills, industrial knowledge, and willingness to travel results in wages that are among the highest in the construction trades.

Two Paths to This Career

Trade School Path

Typical duration: 7-18 months (welding foundation)

Boilermaking programs are rare at trade schools, but welding and industrial maintenance programs provide a relevant foundation. Students who complete welding certifications (especially ASME pressure vessel welding) are well-positioned to enter the boilermaking trade. Some community colleges in industrial regions offer boilermaker-specific coursework.

Apprenticeship Path

Typical duration: 4 years

Boilermaker apprenticeships are the standard entry path, typically lasting 4 years with 8,000 hours of on-the-job training and related instruction. Apprentices learn rigging, welding, layout, and boiler/pressure vessel installation under journeyman supervision. Programs are sponsored by Boilermakers International (IBB) locals. Apprentices earn competitive wages from the start, with regular increases throughout the program.

Career Progression & Earnings

Typical earning trajectory for a boilermaker. Wages vary by location, employer, and experience.

Apprentice

Entry level — learning on the job

$20.00/hr

~$41,600/yr

Journeyman

Certified — working independently

$32.30/hr

~$67,184/yr

Master / Senior

Experienced — may supervise others

$44.00/hr

~$91,520/yr

Source: BLS Occupational Employment & Wage Statistics, May 2023. Annual estimates based on 2,080 hours/year.

School vs. Apprenticeship

Two paths to becoming a Boilermaker. Here's how they compare.

Factor	Trade School	Apprenticeship
Cost	Tuition varies by school	$0 (earn while you learn)
Duration	7-18 months (welding foundation)	4 years
Earnings During Training	No (student)	Yes ($20.00/hr starting)
Credential	Certificate or Associate's	Journeyman certification
Job Placement	Varies by school	Often hired by training sponsor

Source: BLS Occupational Employment & Wage Statistics, May 2023

Job Outlook

Boilermaker employment is tied to energy sector activity, industrial construction, and power plant maintenance. While the workforce is small, demand remains steady due to the critical need for pressure vessel maintenance and the complexity of the work. Retirements are creating openings. Workers with ASME welding certifications and willingness to travel have excellent employment prospects.