Stationary Engineers and Boiler Operators
Overview
Stationary Engineers and Boiler Operators has a national median salary of $78,620 per year, with +3.1% projected job growth from 2025–2035. The Bureau of Labor Statistics lists a high school diploma or equivalent as the typical education needed to enter this occupation.
Description
Operate or maintain stationary engines, boilers, or other mechanical equipment to provide utilities for buildings or industrial processes. Operate equipment such as steam engines, generators, motors, turbines, and steam boilers.
Work Values
- Support
- Relationships
- Working Conditions
Work Styles
Responsibilities
Tasks
- Operate or tend stationary engines, boilers, and auxiliary equipment, such as pumps, compressors, or air-conditioning equipment, to supply and maintain steam or heat for buildings, marine vessels, or pneumatic tools.
- Activate valves to maintain required amounts of water in boilers, to adjust supplies of combustion air, and to control the flow of fuel into burners.
- Monitor boiler water, chemical, and fuel levels, and make adjustments to maintain required levels.
- Analyze problems and take appropriate action to ensure continuous and reliable operation of equipment and systems.
- Observe and interpret readings on gauges, meters, and charts registering various aspects of boiler operation to ensure that boilers are operating properly.
Work Activities
- Inspecting Equipment, Structures, or Materials
- Repairing and Maintaining Mechanical Equipment
- Making Decisions and Solving Problems
- Controlling Machines and Processes
- Monitoring Processes, Materials, or Surroundings
- Getting Information
- Identifying Objects, Actions, and Events
- Communicating with Supervisors, Peers, or Subordinates
- Processing Information
- Organizing, Planning, and Prioritizing Work
Detailed Work Activities
- Inspecting equipment, structures, or materials to identify the cause of errors or other problems or defects.
- Servicing, repairing, adjusting, and testing machines, devices, moving parts, and equipment that operate primarily on the basis of mechanical (not electronic) principles.
- Analyzing information and evaluating results to choose the best solution and solve problems.
- Using either control mechanisms or direct physical activity to operate machines or processes (not including computers or vehicles).
- Monitoring and reviewing information from materials, events, or the environment, to detect or assess problems.
- Observing, receiving, and otherwise obtaining information from all relevant sources.
- Identifying information by categorizing, estimating, recognizing differences or similarities, and detecting changes in circumstances or events.
- Providing information to supervisors, co-workers, and subordinates by telephone, in written form, e-mail, or in person.
- Compiling, coding, categorizing, calculating, tabulating, auditing, or verifying information or data.
- Developing specific goals and plans to prioritize, organize, and accomplish your work.
T-A-S-K
Technology, Abilities, Skills & Knowledge
Technology Skills
- Electronic mail software
- Presentation software
- Facilities management software
- Data base user interface and query software
- Spreadsheet software
Abilities
- Near Vision
- Problem Sensitivity
- Oral Comprehension
- Oral Expression
- Deductive Reasoning
Skills
- Operations Monitoring
- Operation and Control
- Active Listening
- Critical Thinking
- Equipment Maintenance
Knowledge
- Mechanical
- Chemistry
- Public Safety and Security
- Physics
- Engineering and Technology
Education
Education Levels of Current Workers
The Bureau of Labor Statistics lists a high school diploma or equivalent as the typical education needed to enter this occupation. The chart below shows the highest level of education held by people already working in this field, ages 25 and older. It includes workers who earned more education than the job requires and workers who entered the field under earlier requirements, so the largest bar is not the entry requirement. For example, if someone finished a bachelor's degree and then started working in this field, they are counted under “Bachelor's degree” here, but the job itself typically asks for a high school diploma or equivalent.
Certificates
Certifications applicable to Stationary Engineers and Boiler Operators:
| Certificate name | Certifying Organization | Type |
|---|---|---|
| National Board New Construction Inspector Commission | The National Board of Boiler and Pressure Vessel Inspectors | D |
| Stationary Engineer | International Union of Operating Engineers | D |
| National Board Inservice Inspector Commission | The National Board of Boiler and Pressure Vessel Inspectors | I |
Income & Employability
Income Percentile
The median (50th percentile) is the middle wage; 10% earn less than the low figure and 10% earn more than the high figure.
| Low (10%) | $50,590 |
| Median (50%) | $78,620 |
| High (90%) | $125,390 |
Income by Experience
How pay typically grows from entry level (0–2 yrs) to expert (8+ yrs).
| Entry (0–2 yrs) | $62,060 |
| Mid (3–5 yrs) | $79,558 |
| Senior (6–8 yrs) | $84,455 |
| Expert (8+ yrs) | $102,063 |
Employability
There are currently 31,200 jobs in this career path (2025). That number is projected to grow to 32,200 by 2035, a +3.1% change.
+3.1% growthVideo Resources
Training Programs
207 programs at 46 schools on Career School App prepare students for a career as Stationary Engineers and Boiler Operators, including HVAC/R (207). Showing 24.
- Commercial HVAC and Commercial RefrigerationACVOLT Tech School · Colton, CAOther · 8 months — weekends, 8 hours per week
- Air Conditioning and Heating TechnologyAdvanced Technology Institute · Virginia Beach, VADiploma · 15 months
- HVAC/CR TechnologiesAdvanced Training Institute · Las Vegas, NVDiploma · 42 weeks
- Heating, Ventilation, Air Conditioning and RefrigerationAll-State Career School · West Mifflin, PADiploma · 48 weeks (960 clock hours)
- Boilers and PipingAmerican Trade School · Saint Ann, MOCertificate · 8 weeks
- Residential & Commercial Heating, Ventilation & Air Conditioning & Commercial RefrigerationAustin Career Institute · Austin, TXDiploma · 30 weeks
- Heating, Ventilation, and Air ConditioningAviation Institute of Maintenance · Chicago, ILCertificate · 12 months
- Heating/AC/RefrigerationAyers Career College · Shreveport, LADiploma · 60 weeks
- HVAC/R TechnologyBrownson Technical School · Anaheim, CADiploma
- Air Conditioning and Refrigeration TechnicianCBT Technology Institute · Hialeah, FLDiploma · 8 months; 24 semester credits
- Heating, Ventilation, Air-Conditioning/Refrigeration (HVAC/R) 1Charlotte Technical College · Port Charlotte, FLCertificate · 750 clock hours — about 23 weeks
- Refrigeration and A/C with PLC and Renewable Energy TechnicianD'Mart Institute · Barranquitas, PRDiploma · 800 clock hours
- HVAC Systems TechnicianDorsey College · Woodhaven, MIDiploma · 36 weeks (~9 months)
- Heating, Ventilation, Air Conditioning, and RefrigerationDouglas Education Center · Monessen, PAAssociate In Specialized Technology Degree · 16 months
- Heating, Ventilation, Air Conditioning, and Refrigeration TechnologyEastwick College · Nutley, NJAssociate Degree · 18 months
- HVAC TechnicianElite School of Cosmetology · Panama City, FLDiploma · About 20 weeks full time (600 clock hours)
- Heating, Ventilation, Air-Conditioning/Refrigeration (HVAC/R) 1Emerald Coast Technical College · DeFuniak Springs, FLCertificate · 750 clock hours (approximately 26 weeks)
- HVAC Maintenance TechnicianForgeNow · Lewisville, TXCertificate · 6 weeks
- Heating, Ventilation, Air Conditioning and RefrigerationFortis College · Dothan, ALDiploma
- Heating and Air TechnologyHeavy Equipment Colleges of America · Oklahoma City, OKCertificate · 7 weeks
- B-1 License Exam ReviewIndustrial Management & Training Institute · Waterbury, CTContinuing Education · 2 days (Saturday & Sunday)
- Commercial RefrigerationInteractive College of Technology · Chamblee, GAAssociate Degree · 72 semester credits (~75-90 weeks; 1,370 contact hours)
- Advanced Diagnostics and Troubleshooting for Hydronic HVAC SystemsITEC Training & Education Center · Rochester, NYCertification · 30 hours over 3.5 or 4 days
- Commercial Refrigeration, Heating and Air ConditioningLamson Institute · San Antonio, TXDiploma · 42 weeks
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This site incorporates information from O*NET Web Services by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA). O*NET® is a registered trademark of USDOL/ETA. Used under the CC BY 4.0 license.
Certification, licence and career video information is sourced from CareerOneStop, sponsored by the U.S. Department of Labor, Employment and Training Administration (DOLETA) and the Minnesota Department of Employment and Economic Development (DEED).
Wage, employment and outlook figures are from the U.S. Bureau of Labor Statistics — Occupational Employment and Wage Statistics (OEWS) and the Employment Projections program. Figures describe the occupation, not any particular program or graduate.
Career cluster definitions are from Advance CTE.
Pay-by-experience bands are from Lightcast (as recent as July 2025).