20 tasks, each one witnessed by the sources that watched the job — and behind every one, a prompt you can use tonight.
You usually start with a shift handover and check the boiler log in the Operational Data Store (ODS) or paper logs for problems from the previous shift. Spend the morning doing routine inspections: check safety devices, test water quality, weigh fuel, and record readings in Microsoft Excel or the building management system.
Afternoons often mean adjusting controls to keep pressure and temperature steady, performing routine maintenance or small repairs, and entering maintenance requests into the Computerized Maintenance Management System (CMMS). You also respond to alarms and troubleshoot mechanical or electrical issues.
Expect to use a building management system for live control and alarms, an Operational Data Store (ODS) for storing operational data, and a Computerized Maintenance Management System (CMMS) to log repairs and schedule maintenance. Many employers also expect basic Excel for trend charts and Word for reports.
You will use testing equipment that links to these systems (for water quality or voltage tests) and enter results in the ODS or CMMS. Employers usually give on-the-job training for their specific software.
According to the U.S. Bureau of Labor Statistics (BLS) for 2025, there were about 28,250 boiler operators employed. The median pay was $78,620 per year. The lowest tenth earned about $50,590, and the top tenth made about $125,390 per year.
Pay varies with site risk (power plant vs. school), shift differentials, required certifications, and overtime. Always check the employer’s job posting for exact wages and shift premiums.
Employers often expect a high school diploma or GED plus hands-on experience with boiler systems, controls, and safety checks. Trade school classes in HVAC, boiler operation, or industrial maintenance help. Certifications like a boiler operator license (state-specific) or OSHA safety courses are common requirements.
You’ll also learn to test boiler water, use voltage meters, handle burners safely, and record data in the CMMS and ODS on the job. Many hires start as assistants to experienced operators to gain practical experience.
A boiler operator focuses on running and monitoring boilers: feeding fuel, maintaining combustion, testing water chemistry, checking safety devices, and keeping operational logs in the ODS or CMMS. HVAC technicians focus more on air-handling systems, ductwork, and cooling systems.
Plant mechanics do broader mechanical repairs and installation across equipment. Boiler operators will assist plumbers and mechanics but concentrate on boiler controls, combustion, fuel measurement, and regulatory safety checks.
Automation helps: building management systems and sensors log data to the ODS and can adjust controls or send alarms. But operators are still needed for manual inspections, troubleshooting mechanical faults, testing water chemistry, and doing physical maintenance.
Use AI tools only as decision-support: let them flag trends in Excel or suggest maintenance from CMMS history, but always verify recommendations with physical checks and test equipment. Don’t rely solely on automated control for safety devices or emergency procedures.
Show you can perform routine inspections and maintenance: check safety devices, test and correct boiler water chemistry, weigh and record fuel use, and ignite burners safely. Be ready to use a voltage meter to test electrical systems and log results into Excel, the ODS, or CMMS.
Employers want evidence of troubleshooting mechanical issues, keeping clear operational logs, and working with plumbing or ventilation teams. Practical examples from past work or a short skills test (reading gauges, adjusting controls, filling a CMMS work order) are convincing.