Career roadmap
How to Become a Stationary Engineer
The education, training, certifications and steps it takes to start working as a stationary engineer, plus how long it takes and where the career can lead.
To become a stationary engineer: (1) take mechanical classes, (2) join an apprenticeship or get hired, (3) learn systems, (4) earn licenses, (5) advance. Most people need about 1–4 years. BLS lists “high school diploma or equivalent” as the typical entry-level education.
5 steps to become a stationary engineer
Take mechanical classes
Shop, math and physics.
Join an apprenticeship or get hired
Unions such as IUOE run programs.
Learn systems
Boilers, chillers and controls.
Earn licenses
Boiler and stationary engineer.
Advance
Become a chief engineer.
Education and training requirements
A high school diploma is typical, plus long on-the-job training or apprenticeship. Licenses are required in many places.
| Typical entry-level education (BLS) | High school diploma or equivalent |
|---|---|
| Related work experience | None |
| On-the-job training | Long-term on-the-job training |
| Typical training time | 1–4 years |
Certifications and licenses
- State or city stationary engineer license: Graded licenses in many jurisdictions.
- Boiler operator license: Required in many states.
- EPA Section 608: Refrigerant handling certification.
- Certified Energy Manager: Energy efficiency credential.
Skills to build now
Start with boiler operation, chiller and hvac systems, and building automation, and practice problem solving and reliability. Learning the stationary engineer vocabulary early makes training and interviews easier.
Where the career can lead
- Helper or Apprentice: Learn systems.
- Licensed Stationary Engineer: Operate plants.
- Shift or Assistant Chief Engineer: Lead shifts.
- Chief Engineer: Run building operations.
Get a head start
Our self-paced Stationary Engineer training gives you a realistic, practical overview of the job (duties, terminology, step-by-step tasks, safety and interview prep) so you can decide with confidence and show employers you’re serious.
Common questions about getting started
How long does it take to become a stationary engineer?
Most people need about 1–4 years of training. A high school diploma is typical, plus long on-the-job training or apprenticeship. Licenses are required in many places.
Do you need a degree to be a stationary engineer?
No four-year degree is typically required. BLS lists “high school diploma or equivalent” as the typical entry-level education, plus long-term on-the-job training.
What certifications are available for stationary engineers?
Common credentials include State or city stationary engineer license, Boiler operator license, EPA Section 608, and Certified Energy Manager. Many states and cities license stationary engineers and boiler operators, with license grades based on experience and exams.
Sources
- U.S. Bureau of Labor Statistics, BLS Occupational Employment and Wage Statistics (OEWS), May 2025, SOC 51-8021 (Stationary engineers and boiler operators).
- U.S. Bureau of Labor Statistics, BLS Employment Projections, Table 1.2 (2025–35).
- O*NET OnLine summary for Stationary engineers and boiler operators (U.S. Department of Labor).
- BLS Occupational Outlook Handbook.
Reviewed by the Career Education Institute Curriculum Team. Pay figures are national estimates; local pay varies. See our editorial policy.