2025 Salary, Job Outlook & Training Requirements for Boiler Operators & Stationary Engineers
Boiler operators and stationary engineers operate, maintain, and repair systems that power buildings and provide them with heat, hot water, and other services. The systems they manage and oversee play an essential role for the daily operations at factories, offices, hospitals, schools, and other institutions.
As their name suggests, boiler operators specialize in monitoring and repairing boilers. These professionals monitor boiler pressure levels and ensure that system safety features operate correctly. Stationary engineers typically know a broader range of machinery and work on systems that generate and distribute utilities such as steam, heat, ventilation, air conditioning, and electricity in large buildings and industrial facilities.
Both boiler operators and stationary engineers perform preventative maintenance of the systems and equipment they oversee and must respond quickly in emergencies to reduce downtime caused by technical issues or outages. These professionals must stay current with new technologies as industries and regulations evolve.
Understanding your industry’s future, new training requirements, and salary trends will help you when planning your career as a boiler operator or stationary engineer. Those new to the profession can use this information to choose the most promising paths to begin their careers.
Experienced professionals can identify the skills and credentials most valued by employers to help prevent career stagnation and open doors to specialized positions such as inspectors, compliance officers, or energy consultants. Tracking salary trends also helps professionals understand what their time, expertise, and certifications are worth in today’s economy.
In this article, we’ll break down national and regional salary trends, discuss how experience and industry can affect earnings, and explore where demand in this field is growing. We’ll also cover what licenses and certifications are required to enter the field, available training programs, and how to position yourself for long-term success.
Salary Trends for Boiler Operators & Stationary Engineers
National Average Salary
Salaries for boiler operators and stationary engineers have steadily grown in past years. According to the most recent data from the U.S. Bureau of Labor Statistics, the median annual wage for boiler operators and stationary engineers — both classified under the same occupational category — is about $67,640 in the United States. This is almost a 12% increase in salary from 2018 with the median boiler operators and stationary engineer salary at $60,440.
Several factors have contributed to steady salary growth for these professions. Boiler operators and stationary engineers must continuously expand their technical knowledge as automation and energy efficiency become more important to the field, which impacts salaries. Also, employers are providing more competitive pay as the workforce is shrinking due to more professionals retiring.
Regional Salary Differences
When considering salary levels for boiler operators and stationary engineers, you have to factor in how geography plays a role in earnings. Wages typically tend to be higher in metropolitan areas, states, and areas with a lot of commercial and industrial infrastructure. States like New York and Illinois offer some of the top wages in the country, with average salaries often exceeding $85,000 per year.
Rural areas and states with less infrastructure, such as regions in the South and Midwest, may offer starting salaries closer to $50,000–$60,000. However, it’s important to remember that the cost of living is significantly lower in these areas. Places like Chicago, San Francisco, Seattle, and New York City offer top pay due to higher demand and a much higher cost of living.
Experience-Based Salary Growth
Entry-level operators can earn anywhere from $45,000 to $55,000 annually, depending on where they live and the amount of training they’ve received. These operators typically work under the supervision of more experienced employees and gain hands-on experience that helps them complete required licenses and certifications.
Many professionals move into new roles after a couple of years once they’ve had the opportunity to obtain one or more high-pressure boiler licenses. These operators are responsible for more complex systems and equipment and can earn anywhere from $60,000 to $75,000 annually.
Those with many years of experience, who have gotten advanced licenses and exhibited leadership capabilities, can reach salaries in the $80,000 to $100,000+ range, especially in high-demand industries.
Additional certifications can help qualify you for specialized or supervisory roles and increase your earning potential. High-pressure boiler licenses, ASME certifications, and the EPA 608 certification all demonstrate advanced knowledge and specialized skills. Securing these certifications shows you have advanced knowledge, making you more attractive for promotions or potential employment.
Industry-Specific Salary Differences
Not all boiler operator and stationary engineer positions pay the same. Due to the scale of the systems they operate and the increased hazards often involved with their daily responsibilities, professionals who work in utility and power generation plants tend to have some of the highest salaries in the field. Their wages tend to be in the $80,000 to $100,000+ range. Those working in local government can also earn annual salaries of $90,000+.
Industries like food processing and chemical production often offer competitive wages. Boiler operators and stationary engineers are critical for making sure these production facilities run smoothly, as they rely heavily on steam and heat systems for their operations. Operators in these settings can expect salaries in the $65,000–$85,000 range.
Salaries tend to be a bit lower than average for professionals working in hospitals and healthcare settings. However, these jobs often come with outstanding benefits and long-term job security.
Whether or not you belong to a union will significantly impact your salary as a boiler operator or stationary engineer. Union workers typically earn more than non-union workers and have more substantial benefits packages.
Overtime & Shift Differentials
Many boiler operators and stationary engineers have to work outside the traditional 9-to-5 schedule since hospitals, factories, and other facilities operate 24/7. This gives these professionals the opportunity for overtime pay and shift differentials.
If there’s an emergency or if someone calls out, overtime pay can add up and significantly increase the annual salary of a boiler operator or stationary engineer. Additionally, professionals who have to handle hazardous materials or perform inspections while applying strict safety protocols are often paid more. Workers exposed to high-pressure systems, dangerous chemicals, or confined spaces may be eligible for hazard pay.
Job Growth & Demand in 2025
Industry Growth Projections
According to the U.S. Bureau of Labor Statistics, demand for boiler operators and stationary engineers will remain steady in the coming years, with a projected growth of around 4%. Industry trends indicate that this demand will remain steady due to an aging workforce and a growing need for these professionals in sectors like healthcare, energy, and manufacturing.
Though many tasks and processes are being simplified with automation, human oversight and expertise are still crucial. Properly trained professionals are needed to interpret data from digital tools, perform diagnostic checks, and respond to systems issues in real time. As more buildings are upgraded and retrofitted to improve energy efficiency, skilled workers who understand both traditional and newer technologies will be needed.
Aging Workforce & Labor Shortages
In recent years, there has been a growing gap in skilled labor due to many operators and engineers retiring or nearing retirement age. This labor shortage creates an increased demand for professionals who are entering the field or who want to advance their careers.
Additionally, fewer young workers are taking on skilled trades, which increases demand for these roles and gives professionals leverage when negotiating salaries and contract terms with employers. Some businesses even offer apprenticeships, tuition assistance, and accelerated training programs to try to attract young talent.
Expanding Roles & New Opportunities
Because of evolving technology and ever-changing industry regulations, boiler operators and stationary engineers have more opportunities than ever to move into higher-level, more specialized roles. One of these roles is boiler inspector, a professional tasked with ensuring that equipment meets national safety codes and environmental standards. Boiler inspectors must get additional certifications, but this extra work pays off through higher salaries and better work schedules.
The need for safety specialists is also growing across industries, especially in facilities with high-pressure systems or hazardous materials. Safety specialists train staff, conduct audits, and help prevent workplace accidents.
Energy efficiency consultants are in increasing demand as industry and global standards for energy use continue to shape how businesses and facilities operate. These professionals help identify ways to reduce energy consumption, lower utility costs, and provide strategies for more sustainable operations.
Impact of Energy Transition on Job Security
The design, operation, and maintenance of boilers and other mechanical systems are changing as more and more businesses and institutions move toward cleaner energy and more sustainable practices. Traditional fossil-fuel-based systems are being replaced or retrofitted with alternative fuel technologies. Many buildings and industrial facilities now use low-emission and high-efficiency boilers, so there’s a growing demand for operators who know how to handle these modern systems.
Boiler operators and stationary engineers who want to stay competitive and advance their careers can pursue certifications and courses that focus on the use of energy-efficient technology. Professionals can also get hands-on experience and training for high-efficiency boilers, waste heat recovery systems, and alternative fuel systems through trade organizations and technical schools.
State Licensing Requirements
Across the U.S., licensing requirements for boiler operators and stationary engineers vary from state to state and even municipality to municipality. States like Massachusetts, Minnesota, and New York have strict licensing requirements that include formal education, documented work experience, and standardized tests.
In other states, like Arizona and Florida, a statewide license may not be required. Instead, there may be county or city-level regulations that must be followed, especially when it comes to high-pressure boiler systems. Because licensing requirements can vary so much by state and municipality, professionals often have to research the specific policies of the areas they’ll be working in.
Boiler operators can have certifications for low-pressure boiler systems, high-pressure boiler systems, or both. Professionals who are certified to work on low-pressure boilers can handle systems that operate under 15 psi of steam or 160 psi of hot water. High-pressure certifications quality operators to work on systems that operate above these limits and require more experience and testing. Some states classify licenses into multiple levels (e.g., 1st, 2nd, 3rd class engineers), which define the size or type of boiler an operator is qualified to manage.
Common Industry Certifications
A boiler operator and stationary engineer can get a number of national and industry-recognized certifications to qualify them for higher-level and better-earning positions:
The SME (American Society of Mechanical Engineers) Certification is especially valuable for operators who work on code-compliant systems. Understanding ASME codes — especially the ASME Boiler and Pressure Vessel Code — is necessary to ensure boilers and pressure vessels are safe and compliant.
The NBIC Boiler Inspector Certification is a highly respected credential that certifies professionals to inspect boilers, pressure valves, and other equipment according to the National Board Inspection Code. After completing this program, you become qualified for manufacturing, government, and private industry inspection roles.
Boiler systems usually don’t use refrigerants, but many boiler operators and stationary engineers often manage HVAC systems, chillers, and refrigeration equipment where handling refrigerants is necessary. Anyone who services, maintains, repairs, or disposes of appliances containing regulated refrigerants must have a Section 608 Technical Certification from the EPA. There are four types of EPA 608 certifications. The certifications you need will depend on the types of systems you work on.
Additionally, some cities like New York City and Chicago require you to complete programs for city-specific operating engineer licenses to work legally within city limits. Acquiring and maintaining these city-specific licenses involves exams and renewals.
Apprenticeship vs. Fast-Track Programs
Those who want to become boiler operators or stationary engineers either go for traditional apprenticeships or opt into fast-track certification programs. Apprenticeships involve much more of a time commitment. They’re multi-year programs that are typically sponsored by employer associations, local governments, or unions.
Apprenticeships usually last three to five years, and during this time, students receive both classroom instruction and paid on-the-job training. Those who complete apprenticeships have a much better chance of landing jobs because of the hands-on experience and networking opportunities they receive.
Accelerated programs are designed to help those looking to change careers or start in the field get going quickly. They typically take six to twelve months to complete and focus more on passing exams than on-the-job training. Some fast-track certification programs offer online or hybrid learning options.
Training & Education Pathways
Trade Schools & Community Colleges
Anyone who wants to become a boiler operator or stationary engineer can enroll in a career-focused program at a trade school or community college. Students can participate in certificate and associate degree programs that cover topics like boiler theory, pressure systems, and HVAC fundamentals.
Certification programs can take as few as six months to complete, and those seeking degrees are usually in school for two years. Tuition costs vary widely based on the institution and program. Prospective students should verify current tuition rates with the specific schools they’re interested in.
Some schools partner with local employers or unions to provide hands-on training in real-world environments. Graduates are well-prepared to take state licensing exams and pursue entry-level roles in facilities management, manufacturing, or energy production.
Union & On-the-Job Training Programs
Union-sponsored apprenticeship programs are the best way for boiler operators and stationary engineers to get relevant, on-the-job training and experience. Organizations like the International Union of Operating Engineers (IUOE) and the International Brotherhood of Electrical Workers (IBEW) offer apprenticeships that combine paid, hands-on work experience with classroom instruction. In these programs that typically run for three to five years, apprentices can earn wages as they learn.
The benefits of union-based training are significant: apprentices are exposed to current industry practices, safety protocols, and the latest equipment and technologies. In addition to gaining technical skills, those who participate in these programs also get certifications in first aid, OSHA compliance, and other specialty areas. These programs also build strong professional networks that can help with long-term job security and career mobility.
Continuing Education & Specializations
Boiler operators and stationary engineers must constantly maintain licenses and continue their education to earn promotions and adapt to new equipment and regulations. Continuing education in closed-loop water systems, wastewater handling, and boiler blowdown recovery will be important for those who want to stay competitive in the field.
Automation courses teach how to monitor and control equipment using Programmable Logic Controllers (PLCs), SCADA systems (Supervisory Control and Data Acquisition), and building management systems (BMS). Courses in automation controls are available through community colleges, technical training centers, and online platforms such as Udemy, Coursera, LinkedIn Learning, and industry-specific programs like the International Society of Automation. Professionals trained in automation controls are better equipped to reduce energy waste, prevent breakdowns, and enhance the safety and reliability of mechanical systems.
Many technical schools, unions, and professional associations now offer 100% online or hybrid courses in key areas such as boiler maintenance, water treatment chemistry, HVAC automation, and green building systems. These programs are ideal for professionals balancing full-time jobs and family responsibilities with their career advancement.
Growth from Entry-Level to Senior Roles
When starting out in the field, new professionals begin with entry-level roles like Boiler Technician, where they get hands-on experience supervised by licensed professionals. Once they have enough on-the-job training and pass any required exams, workers can become boiler operators or stationary engineers. In these roles, professionals oversee boiler systems, perform maintenance, and ensure compliance with safety regulations.
Boiler operators can move into more senior roles like Chief Engineer or Plant Manager after obtaining advanced certifications, completing many more years of hands-on experience, and showing they can handle leadership responsibilities. Professionals in these higher-level roles are responsible for managing teams, directing budgets, overseeing high-capacity systems, and much more.
Career advancement can differ for boiler operators and stationary engineers because of the size of the facility where they work and the types of responsibilities they have. In smaller commercial settings, operators frequently wear many hats and are also responsible for things like HVAC maintenance, plumbing, electrical tasks, and general building upkeep. This means you can become a jack-of-all-trades, but professionals in this setting often miss out on opportunities for specialization, formal training, and advancement.
Typically, career advancement is easier at hospitals, universities, government facilities, and industrial plants that have more structured operations. Professionals working in these settings manage more complex systems and often work within larger teams. These environments often offer union membership, higher pay, and a clear path to more senior positions.
Transitioning to Inspections & Management
Many boiler operators and stationary engineers move into roles that involve inspections, compliance, or energy management as they gain experience. These roles involve higher pay and better work-life balance. To become a boiler inspector, you must get a certification from the National Board of Boiler and Pressure Vessel Inspectors and have the proper years of experience. Boiler inspectors can issue equipment certifications and evaluate systems to ensure they’re safe and up to code.
Safety compliance officer is another in-demand career path. These professionals ensure all mechanical systems in a building or facility, including boilers, pressure vessels, and HVAC equipment, meet local, state, and federal safety regulations. They’re responsible for conducting inspections, enforcing OSHA standards, and training others on safety procedures. Safety compliance officers prevent workplace accidents and help minimize legal risks.
Some boiler operators and stationary engineers become energy auditors. They evaluate the efficiency of mechanical systems — especially boilers and heating systems — in commercial, institutional, and industrial facilities. These specialized professionals help identify where energy is being wasted and recommend improvements for equipment upgrades and control system optimizations. They often use diagnostic tools and software to analyze data and generate reports.
The Future of Boiler Operator Careers
Industry Stability vs. Technological Disruption
Modern facilities are increasingly implementing technologies that allow operators to monitor equipment performance in real-time from anywhere and automate some routine processes and tasks. While automation does reduce some manual tasks, it does not eliminate the need for skilled professionals altogether. Instead, the influence of automation, remote monitoring, and digital controls is shifting roles toward data-driven maintenance, diagnostics, and system optimization.
Rather than replacing human roles, technology is redefining them. Professionals who can correctly interpret data and manage automated systems will be essential in daily operations. Those with tech-savvy problem-solving skills and traditional training will always have job opportunities.
The Growing Importance of Green Energy Skills
As sustainability requirements become stricter, employers seek professional operators with green energy expertise. More facilities are moving away from fossil fuels and toward more sustainable alternatives such as hydrogen-fired boilers, biomass systems, and electrified heat technologies. Operators who can manage, monitor, and maintain these types of technologies will be in high demand. Knowledge of carbon capture systems, waste heat recovery, and high-efficiency condensing boilers can position professionals as leaders in their field.
Professionals with expertise in emissions control, energy audits, and environmental compliance will be increasingly valuable as facilities aim to meet regulatory standards and reduce operational costs. Courses and certifications in energy efficiency, sustainability management, and renewable systems are becoming critical for those looking to future-proof their careers.
How to Stay Competitive in the Job Market
Professionals have to be proactive about continuing education and networking to remain relevant in today’s job market. Getting advanced certifications from organizations like ASME, NBIC, or the Association of Energy Engineers will help to advance your skills. Continuing education in automation, water treatment, and sustainability is also critical, especially as systems become more complex.
When it comes to career development, trade organizations and unions offer a great source of support. These groups provide access to mentorships, networking events, and industry conferences. Having this access helps professionals to stay up-to-date on best practices and emerging technologies.
Trade organizations and unions can play a major role in career development. In addition to training and certification programs, these groups also provide access to mentorship, networking events, and industry conferences. Having the opportunity to go to these events empowers professionals to stay up-to-date on best practices, regulatory changes, and new technologies.
In a competitive job market, building a strong professional network, staying active in trade associations, and consistently updating your skills can help secure promotions and provide new opportunities in high-demand sectors such as energy management and facility compliance.
Thanks to steady job demand and new opportunities in the field, the future is bright for boiler operators and stationary engineers. These careers offer financial stability and plenty of opportunities for career growth. National median salaries are around $68,000, and top earners can bring in six figures annually. Pay will vary by region and industry, but advanced certifications and a union membership will always improve your career and earning potential.
For those who are new to the field, traditional mentorships and accelerated certification programs are different paths to the same goal. With traditional mentorships, you get hands-on experience and invaluable networking opportunities, while trade schools and community colleges offer courses designed to prepare you for licensing exams.
The responsibilities of boiler operators and stationary engineers will continue to evolve with new technologies and industry standards. Specialized areas like energy auditing, compliance inspection, and green energy systems are providing these professionals with more opportunities for growth and advancement. Professionals who are current with their certifications and who can operate modern systems will be able to find long-term success in the field.
Whether you’re about to start your first day of an apprenticeship or you’ve been in your role for years, stay informed and adaptable. Learn new systems, build a strong professional network, and seek out certifications that align with skills that will be important to the field in the future. With the right training, experience, and initiative, you can build a rewarding career in a profession that is always in demand.
If you are looking to start or further your career as a Boiler Operator or Stationary Engineer, you can check out our state-by-state educational resource guide for the closest training institution near you.
