Stationary Engineers and Boiler Operators Salary & Career Guide (2025)
Stationary engineers and boiler operators earn a national median salary of $78,620 a year, or about $38 an hour. The middle 50% typically earn between $50,590 and $125,390, according to the Bureau of Labor Statistics. This occupation covers workers who operate, maintain, and repair boilers, engines, turbines, and other mechanical equipment in buildings, power plants, and industrial facilities.
How much Stationary Engineers and Boiler Operators earn
The median annual wage for stationary engineers and boiler operators is $78,620. The mean wage is $83,960, which works out to roughly $38 per hour. The bottom 10% earn $50,590 or less, while the top 10% earn $125,390 or more.
Pay varies significantly by industry. Workers in local government, manufacturing, and commercial building operations tend to earn above the median. Overtime is common in some settings, especially power plants and large facilities that run 24/7.
- Median annual salary: $78,620
- Mean annual salary: $83,960 ($38/hr)
- 10th percentile: $50,590
- 90th percentile: $125,390
Pay by state
Illinois pays the highest: $115,780 on average. Wyoming ($111,920), Hawaii ($103,400), Connecticut ($94,870), and New York ($94,070) round out the top five. These states often have strong union presence or high cost of living.
At the low end, Louisiana averages $47,750, followed by West Virginia ($53,340) and Alabama ($53,470). Regional differences reflect industrial concentration, union density, and local demand.
- Highest-paying states: Illinois $115,780, Wyoming $111,920, Hawaii $103,400, Connecticut $94,870, New York $94,070
- Lowest-paying states: Louisiana $47,750, West Virginia $53,340, Alabama $53,470
How to become a Stationary Engineer or Boiler Operator
Most workers enter through a formal apprenticeship (typically 4 years) or on-the-job training. Apprenticeships combine paid work with classroom instruction in thermodynamics, steam systems, electrical controls, and safety. Some vocational schools and community colleges offer certificate or associate programs.
Licensing is mandatory in most states. You’ll need to pass a boiler operator or stationary engineer exam, which covers boiler codes, steam generation, and troubleshooting. Requirements vary by state and the class of license (e.g., low-pressure vs. high-pressure). Many employers also require a high school diploma or GED and a valid driver’s license.
- Complete a 4-year apprenticeship or on-the-job training
- Earn a certificate or associate degree in stationary engineering or related field (optional but helpful)
- Pass your state’s stationary engineer or boiler operator licensing exam
- Renew license as required (usually every 1-3 years with continuing education)
Job outlook
Employment of stationary engineers and boiler operators is projected to grow 2.2% from 2024 to 2034, about as fast as the average for all occupations. That translates to roughly 3,800 job openings each year over the decade, mostly to replace workers who retire or leave the field.
Demand is tied to the need for skilled operators in large commercial buildings, hospitals, factories, and power plants. Automation may reduce some lower-level tasks, but experienced engineers who can diagnose problems and manage complex systems will remain in demand.
- Projected growth 2024–2034: 2.2% (about as fast as average)
- About 3,800 openings per year
- Employment: 28,250 in 2024
Frequently asked questions
What is the national median salary for stationary engineers and boiler operators?
The national median salary is $78,620 per year, or about $38 per hour. The mean wage is $83,960.
Which states pay the highest for stationary engineers and boiler operators?
Illinois pays the highest average at $115,780, followed by Wyoming ($111,920), Hawaii ($103,400), Connecticut ($94,870), and New York ($94,070).
How do I become a stationary engineer or boiler operator?
The typical path is a 4-year apprenticeship or on-the-job training, plus a state license. Many also complete a certificate or associate degree. Licensing exams cover boiler codes and steam systems.
What is the job growth outlook for stationary engineers and boiler operators?
Employment is expected to grow 2.2% from 2024 to 2034, with about 3,800 job openings per year. Growth is about as fast as average for all occupations.
Salary figures are U.S. Bureau of Labor Statistics estimates (OEWS / Employment Projections). For informational purposes only; not career or financial advice. See the full Stationary Engineers and Boiler Operators data.