Boiler Technician License Requirements

Install, maintain, and repair boiler and pressure vessel systems. Compare requirements across all 50 states.

States Require License

$382

Average Initial Cost

States Require Exam

About Boiler Technician Licensing

Boiler technicians install, maintain, repair, and inspect boiler and pressure vessel systems used for heating, industrial processes, and power generation. The work involves steam and hot water boilers, pressure vessels, heat exchangers, and associated piping and control systems. Due to the high pressures and temperatures involved, boiler work is considered a safety-critical trade.

Modern boiler technicians must understand combustion principles, heat transfer, water chemistry, control systems, and the specific safety requirements of pressurized systems. The work spans from residential boiler maintenance to the operation and maintenance of large industrial and institutional boiler systems.

Licensing Landscape

Boiler technician licensing is required in many states, particularly for those who install or service boilers above certain pressure and size thresholds. Some states license boiler technicians under a plumbing or HVAC license, while others have specific boiler installer or operating engineer licenses. States with cold climates and extensive boiler infrastructure tend to have more specific licensing requirements. National Board Commission and ASME certification carry significant weight in the industry.

Common Requirements

State boiler installer or operating engineer license
Knowledge of ASME Boiler and Pressure Vessel Code
Experience with steam and hot water systems
National Board Commission (for inspectors)
General liability insurance
Continuing education on boiler safety

What Does a Boiler Technician Do?

Install and commission steam and hot water boilers

Perform preventive maintenance and tune-ups

Troubleshoot and repair boiler malfunctions

Test safety devices including relief valves and controls

Monitor and maintain boiler water chemistry

Inspect boilers and pressure vessels

Repair and replace boiler components and refractory

Ensure compliance with ASME Boiler and Pressure Vessel Code

Career Outlook

Average Salary Range

$50,000 - $85,000

Projected Growth

1% (2022-2032)

Boiler technicians fill a critical niche, particularly in northern states, industrial facilities, and institutional buildings (hospitals, universities, government buildings) that rely on boiler systems. The aging boiler infrastructure creates steady demand for skilled technicians. Boiler efficiency upgrades and emissions reduction requirements create additional work. The specialized nature of the trade supports strong wages.

Frequently Asked Questions

Do I need a separate license for boiler work?

In many states, yes. Boiler work may require a specific boiler installer license, operating engineer license, or endorsement on your HVAC or plumbing license. The requirements depend on your state and the size and type of boilers you work on.

What is the ASME Boiler and Pressure Vessel Code?

The ASME BPVC is the comprehensive code governing the design, fabrication, installation, and inspection of boilers and pressure vessels. States adopt this code as part of their boiler safety regulations. Technicians must be familiar with the applicable sections for their work.

Is boiler work dangerous?

Boiler work involves significant hazards including high-pressure steam, hot surfaces, combustion gases, and confined spaces. Proper training, safety procedures, and personal protective equipment are essential. Boiler explosions, while rare with proper maintenance, can be catastrophic.

Find Your State's Boiler Technician Requirements

Select your state below to see the specific licensing requirements, fees, exams, and step-by-step application process for boiler technicians.

Boiler Technician License by State

Alabama