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Stationary Engineers and Boiler Operators

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.

Median Annual Pay
$67,640
Range: $41,360 - $113,660
Training Time
6 months to 2 years
AI Resilience
🟡AI-Augmented
Education
Post-secondary certificate

📋Key Responsibilities

  • 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.
  • Maintain daily logs of operation, maintenance, and safety activities, including test results, instrument readings, and details of equipment malfunctions and maintenance work.
  • Test boiler water quality or arrange for testing and take necessary corrective action, such as adding chemicals to prevent corrosion and harmful deposits.
  • Monitor and inspect equipment, computer terminals, switches, valves, gauges, alarms, safety devices, and meters to detect leaks or malfunctions and to ensure that equipment is operating efficiently and safely.

💡Inside This Career

The stationary engineer operates building systems—running boilers, maintaining HVAC equipment, and keeping the mechanical systems that large buildings depend on functional. A typical day centers on plant operation. Perhaps 55% of time goes to system operation: monitoring boilers, adjusting heating and cooling, controlling power distribution. Another 35% involves maintenance—inspecting equipment, performing repairs, conducting preventive service. The remaining time addresses documentation and emergency response.

People who thrive as stationary engineers combine broad mechanical knowledge with operating skill and the reliability that critical systems require. Successful engineers develop proficiency across building systems while building the diagnostic abilities that efficient troubleshooting demands. They must keep multiple systems running smoothly simultaneously. Those who struggle often cannot manage multiple system responsibilities or find the night shifts challenging. Others fail because they cannot achieve the license requirements that many jurisdictions mandate.

Stationary engineering represents critical building support, with operators maintaining the mechanical infrastructure that hospitals, factories, and large facilities depend on. The field serves buildings requiring continuous mechanical operation. Stationary engineers appear in discussions of facility operations, licensed trades, and the workers who keep building systems running.

Practitioners cite the job security and the variety as primary rewards. The licensed skills provide job security. The variety of systems prevents monotony. The compensation is good for skilled work. The work is essential. The problem-solving is engaging. Self-employment opportunities exist. Common frustrations include the shift work and the licensing requirements. Many find that 24/7 coverage requires night and weekend work. The licensing exams are demanding. The boiler responsibility is serious—failures can be catastrophic. The basement mechanical rooms are isolating. The physical plant environments vary in comfort.

This career requires boiler licensing and mechanical training. Strong multi-system knowledge, operating skill, and reliability are essential. The role suits those who want stable facility operations careers. It is poorly suited to those uncomfortable with shift work, unable to pass licensing exams, or preferring daytime schedules. Compensation is good for licensed stationary engineering.

📈Career Progression

1
Entry (10th %ile)
0-2 years experience
$41,360
$37,224 - $45,496
2
Early Career (25th %ile)
2-6 years experience
$51,970
$46,773 - $57,167
3
Mid-Career (Median)
5-15 years experience
$67,640
$60,876 - $74,404
4
Experienced (75th %ile)
10-20 years experience
$89,160
$80,244 - $98,076
5
Expert (90th %ile)
15-30 years experience
$113,660
$102,294 - $125,026

📚Education & Training

Requirements

  • Entry Education: Post-secondary certificate
  • Experience: One to two years
  • On-the-job Training: One to two years
  • !License or certification required

Time & Cost

Education Duration
0.5-2 years (typically 1)
Estimated Education Cost
$3,000 - $20,000
Community college:$3,990
Trade school:$10,000
Source: college board (2024)

🤖AI Resilience Assessment

AI Resilience Assessment

Medium Exposure + Human Skills: AI augments this work but human judgment remains essential

🟡AI-Augmented
Task Exposure
Medium

How much of this job involves tasks AI can currently perform

Automation Risk
Medium

Likelihood that AI replaces workers vs. assists them

Job Growth
Stable
+2% over 10 years

(BLS 2024-2034)

Human Advantage
Moderate

How much this role relies on distinctly human capabilities

Sources: AIOE Dataset (Felten et al. 2021), BLS Projections 2024-2034, EPOCH FrameworkUpdated: 2026-01-02

💻Technology Skills

Building management systems (BMS)CMMS softwareSCADA systemsMicrosoft ExcelERP systems (SAP)

Key Abilities

Near Vision
Problem Sensitivity
Oral Comprehension
Oral Expression
Deductive Reasoning
Inductive Reasoning
Information Ordering
Perceptual Speed
Written Comprehension
Category Flexibility

🏷️Also Known As

Air Compressor EngineerAir Compressor OperatorAir Conditioning Engineer (AC Engineer)Air Plant EngineerAuxiliary OperatorBlowing EngineerBoiler EngineerBoiler FiremanBoiler OperatorBoiler Plant Equipment Mechanic+5 more

🔗Related Careers

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🔗Data Sources

Last updated: 2025-12-27O*NET Code: 51-8021.00

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