Occupation · SOC 51-8021
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 wage
$75,190
$47,310–$121,200
Projected growth
—
—
Annual openings
—
per year
Employed (US)
30,780
Job Zone 3
Typical preparation
Medium preparation
Stackable credential programs
4 mapped
Core skills
Operations MonitoringOperation and ControlTroubleshootingRepairingEquipment MaintenanceCritical ThinkingActive ListeningReading ComprehensionQuality Control AnalysisMonitoringJudgment and Decision MakingCoordinationComplex Problem SolvingActive LearningTime ManagementSpeakingWritingSystems EvaluationSocial PerceptivenessInstructingSystems AnalysisPersuasionEquipment SelectionNegotiationManagement of Personnel ResourcesScienceService OrientationMathematicsLearning StrategiesInstallationManagement of Material ResourcesOperations AnalysisTechnology DesignManagement of Financial ResourcesProgramming
Knowledge areas
MechanicalChemistryPublic Safety and SecurityPhysicsEngineering and TechnologyEnglish LanguageComputers and ElectronicsMathematicsProduction and ProcessingBuilding and ConstructionAdministration and ManagementEducation and TrainingLaw and GovernmentDesignCommunications and MediaAdministrativeTelecommunicationsTransportationPersonnel and Human ResourcesPsychologyBiologyGeographyCustomer and Personal ServiceEconomics and AccountingTherapy and CounselingSociology and AnthropologyPhilosophy and TheologyMedicine and DentistryFood ProductionSales and MarketingHistory and ArcheologyForeign LanguageFine Arts
Technology & tools
Building management system softwareComputerized maintenance management system CMMSDatabase softwareEmail softwareGraphics softwareMicrosoft Active Server Pages ASPMicrosoft ExcelMicrosoft Office softwareMicrosoft OutlookMicrosoft PowerPointMicrosoft WordOperating system softwareOperational Data Store ODS softwareSAP softwareSpreadsheet softwareStatistical softwareWeb browser softwareWord processing software
Representative tasks
Inspecting Equipment, Structures, or MaterialsRepairing and Maintaining Mechanical EquipmentMaking Decisions and Solving ProblemsControlling Machines and ProcessesMonitoring Processes, Materials, or SurroundingsGetting InformationIdentifying Objects, Actions, and EventsCommunicating with Supervisors, Peers, or SubordinatesProcessing InformationUpdating and Using Relevant KnowledgeOrganizing, Planning, and Prioritizing WorkDocumenting/Recording InformationEvaluating Information to Determine Compliance with StandardsJudging the Qualities of Objects, Services, or PeopleWorking with ComputersOperating Vehicles, Mechanized Devices, or EquipmentPerforming General Physical ActivitiesTraining and Teaching OthersThinking CreativelyCoordinating the Work and Activities of OthersHandling and Moving ObjectsAnalyzing Data or InformationEstimating the Quantifiable Characteristics of Products, Events, or InformationDeveloping and Building TeamsCoaching and Developing OthersScheduling Work and ActivitiesDeveloping Objectives and StrategiesEstablishing and Maintaining Interpersonal RelationshipsRepairing and Maintaining Electronic EquipmentAssisting and Caring for OthersInterpreting the Meaning of Information for OthersResolving Conflicts and Negotiating with OthersGuiding, Directing, and Motivating SubordinatesDrafting, Laying Out, and Specifying Technical Devices, Parts, and EquipmentMonitoring and Controlling ResourcesProviding Consultation and Advice to OthersCommunicating with People Outside the OrganizationPerforming Administrative ActivitiesStaffing Organizational UnitsPerforming for or Working Directly with the Public
Competency framework
Skill expectations by proficiency level.
emerging
Stationary boiler components and auxiliary equipment — identify and locate under direct supervision during initial facility orientation.Gauge, meter, and chart readings — observe and record basic instrument values under technician guidance in a commercial building plant room.Valve activation procedures — follow step-by-step protocols to adjust water and fuel supply levels under close supervisor oversight.Daily operational logs — complete pre-formatted entries for instrument readings and routine activities as directed by a licensed stationary engineer.Boiler water quality test kits — perform basic water sampling steps following written procedures in a supervised plant environment.Safety devices and alarm panels — recognize audible and visual alarm signals and report findings immediately to the shift supervisor.Equipment maintenance checklists — carry out routine inspection rounds using provided forms in a stationary engine room setting.Combustion air supply controls — observe adjustment procedures performed by senior operators and assist as directed in a heating plant.Facilities management software — enter basic operational data into pre-configured screens under the guidance of an experienced operator.Hand tools and basic test instruments — retrieve, use, and return under direct supervision during entry-level maintenance tasks in a boiler room.
developing
Boiler and auxiliary equipment operation — manage daily startup and shutdown sequences with minimal oversight in a mid-sized commercial facility.Gauge and meter readings — interpret instrument data and compare against acceptable operating ranges to confirm proper boiler performance during a routine shift.Valve and control adjustments — regulate water, fuel, and combustion air flow independently to sustain required steam and heat output across a building complex.Boiler water chemistry — conduct water quality tests, interpret results, and add approved treatment chemicals to prevent corrosion and scale buildup.Operational and maintenance logs — maintain accurate daily records of test results, instrument readings, and minor malfunctions using facility log systems.Equipment malfunction detection — recognize early indicators of leaks or system irregularities during scheduled inspection rounds and escalate non-routine findings appropriately.Troubleshooting common faults — diagnose and resolve frequently recurring equipment issues such as pressure fluctuations or pump failures in a familiar plant environment.Spreadsheet and office software — organize operational data and generate shift summary reports for review by senior engineering staff.Preventive maintenance tasks — perform scheduled lubrication, filter changes, and minor adjustments on compressors and auxiliary systems according to manufacturer intervals.Emergency response protocols — follow established safety and shutdown procedures during equipment alarms, applying plant-specific protocols with developing confidence.
proficient
Stationary engines, boilers, and full auxiliary systems — operate and maintain autonomously across an entire shift cycle in large industrial or marine vessel environments.Complex instrument data analysis — interpret multi-parameter gauge, meter, and chart readings to proactively identify and correct deviations before equipment failure occurs.Non-routine fault diagnosis — apply critical thinking and deductive reasoning to isolate root causes of uncommon malfunctions and implement corrective actions independently.Combustion efficiency optimization — adjust fuel, air, and water variables to maximize thermal efficiency and minimize fuel consumption across varying load conditions.Comprehensive water treatment programs — evaluate chemical test results, adjust treatment dosing schedules, and document corrective actions to sustain boiler system integrity.Full maintenance execution — plan, perform, and document corrective and preventive repairs on boilers, pumps, compressors, and associated controls without supervisory direction.Regulatory compliance documentation — prepare thorough maintenance and safety logs that satisfy jurisdictional inspection requirements and internal quality control standards.Cross-system coordination — collaborate with HVAC, electrical, and facilities teams to align boiler output with building-wide energy and comfort demands.Facilities management software — configure data inputs, query historical operational trends, and use findings to inform maintenance scheduling decisions.Judgment under pressure — assess evolving equipment conditions during high-demand periods and make time-critical decisions to protect personnel safety and system continuity.
advanced
Plant-wide operational strategy — establish operating standards, shift schedules, and long-term maintenance programs for an entire stationary engineering department.Apprentice and junior operator development — design and deliver structured on-the-job training, mentoring emerging and developing operators toward licensure readiness.Capital equipment evaluation — lead technical assessments of boiler upgrades, replacement systems, and energy-efficiency projects, providing recommendations to facility leadership.Regulatory and safety governance — interpret jurisdictional codes, interface with inspectors, and implement organization-wide compliance frameworks for boiler and pressure vessel operations.System reliability engineering — analyze historical operational data and failure patterns to drive continuous improvement initiatives that reduce unplanned downtime across facilities.Chemical and energy management oversight — direct facility-level water treatment vendor relationships and fuel procurement strategies to optimize cost and environmental performance.Emergency preparedness leadership — author and rehearse emergency response plans covering catastrophic boiler failure, hazardous releases, and multi-system outages at organizational scale.Technology integration direction — evaluate and champion adoption of advanced monitoring platforms, predictive maintenance software, and digital log systems across the engineering function.Cross-departmental liaison — represent the stationary engineering function in facility planning, capital budgeting, and sustainability initiatives with executive and project management stakeholders.Knowledge capture and standardization — document institutional expertise into SOPs, competency frameworks, and training materials that transfer organizational knowledge to the next generation of operators.
Also known as
76 alternate job titles map to this occupation.
Air Compressor EngineerAir Compressor OperatorAir Conditioning Engineer (AC Engineer)Air Plant EngineerAuxiliary OperatorBlowing EngineerBoiler EngineerBoiler FiremanBoiler OperatorBoiler Plant Equipment MechanicBoiler Plant OperatorBoiler Room OperatorBoiler Service Technician (Boiler Service Tech)Boiler Technician (Boiler Tech)Breaker EngineerByproduct EngineerCompressor OperatorCooling System OperatorCooling Tower OperatorDiesel Stationary EngineerEngineerEnginemanExhaust WorkerExhauster EngineerFan Engine EngineerFan RunnerGas Engine OperatorHeating and Ventilating WorkerHeating Operators EngineerHigh Pressure Boiler OperatorHumidifier AttendantHVAC Mechanic Boiler Operator (Heating, Ventilation, and Air Conditioning Mechanic Boiler Operator)Low Pressure Boiler OperatorLow Pressure Boiler TenderLow Pressure FirerMarine FirerOiler and Watertender FiremanOperating EngineerOperating Power Plant Combustion EngineerOperator