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Heating and Boiler Plant Equipment Mechanic
This standard is for use in grading nonsupervisory jobs involved in installing, maintaining, repairing, troubleshooting, and modifying single and multiple fuel heating and power boilers and associated auxiliary and pollution control equipment, hot air furnaces, and similar equipment systems. The systems and equipment provide steam, heat, or hot water for use in the operation of industrial and institutional facilities and equipment. This work requires knowledge of the principles of combustion, he
What WG-5309 pays
Federal Wage System pay is set by local prevailing wage surveys, so it moves with the wage area rather than a national table.
Wage Grade rates are published per wage area rather than nationally, so the number that matters is the one for the installation you are applying to.
Source: DoD Civilian Personnel Advisory Service wage schedules.
Qualification requirements
OPM's standard for WG-5309, as written.
Heating and Boiler Plant Equipment Mechanic
Federal Wage System Position
Work Performed
This standard is for use in grading nonsupervisory jobs involved in installing, maintaining, repairing, troubleshooting, and modifying single and multiple fuel heating and power boilers and associated auxiliary and pollution control equipment, hot air furnaces, and similar equipment systems. The systems and equipment provide steam, heat, or hot water for use in the operation of industrial and institutional facilities and equipment. This work requires knowledge of the principles of combustion, heat transfer, and steam and high temperature hot water generation. It also requires the ability to recognize and determine the best method for correcting malfunctions and the skill to install and repair a variety of heat and power producing systems and support equipment.
What this means if you served
- Write the duties, not the billet. OPM credits military experience on the work performed, and does not use rank or pay to judge specialized experience.
- Put the training and certifications you earned in service on the page. They count here.
- Claim your veterans preference on the application. It is not applied for you.
- No positive education requirement here, so qualifying experience can stand in for the education.
How to qualify for WG-5309
1Review Trade/Craft Requirements
WG positions require demonstrated skill in a specific trade or craft. Review the job announcement for required certifications, licenses, and hands-on experience.
2Document Your Experience
WG positions are experience-based, not grade-based. Document your years of hands-on trade experience, apprenticeships completed, and journeyman status if applicable.
3Gather Credentials
Collect your DD-214, trade certifications (welding, electrical, HVAC, etc.), apprenticeship completion certificates, and any specialized licenses required for your trade.
4Build Your Federal Resume
Two pages, the same USAJOBS limit that has applied since 27 September 2025. Lead with hands-on trade experience: the tools and equipment you ran, safety training, the projects you finished, and hours worked per week.
5Apply on USAJOBS
Search for WG positions in your trade specialty, carefully answer assessment questions about your skill level and experience, and submit before the closing date.
Military jobs that map to this series
Missile and Space Facilities
WG-5309 Heating and Boiler Plant Equipment Mechanic fits the central-plant heating and boiler side of facility operations.
Skills that carry over: Boiler operations, Central plant maintenance, Heating systems, Plant safety.
Usually opens at: WG-08, WG-10, WG-11.
Engineman
Heating and boiler plant pathway. Steam and engine systems expertise.
Skills that carry over: Diesel Engines, Refrigeration Systems, HVAC, Preventive Maintenance, Troubleshooting.
Usually opens at: WG-10, WG-11.
Utilities Equipment Repairer
WG-5309 Heating and Boiler Plant Equipment Mechanic fits 91Cs who worked portable heating and boiler-adjacent systems. Strong adjacent match.
Skills that carry over: Heating system repair, Boiler equipment maintenance, Fuel and electrical systems, Mechanical troubleshooting.
Usually opens at: WG-8, WG-10.
Your record can qualify you even when your code is not on this list. The crosswalk is a starting point, not the gate.
Typical duties
- Perform heating and boiler plant equipment mechanic tasks as assigned
- Follow safety procedures and regulations
- Maintain and operate tools and equipment
- Complete work orders and documentation
- Coordinate with team members and supervisors
Key competencies
Ability to follow safety procedures and regulations
Knowledge of tools and equipment for the trade
Skill in performing physical tasks requiring manual dexterity
Ability to work independently and as part of a team
Ability to read and interpret instructions and procedures
Words the announcement will use
Use the ones your record actually supports. A rater is matching your experience against the specialized experience statement, and a keyword with nothing behind it does not survive that.
Questions about WG-5309
What is a Heating and Boiler Plant Equipment Mechanic?
A Heating and Boiler Plant Equipment Mechanic (WG-5309) installs, maintains, repairs, and troubleshoots single and multiple fuel heating boilers, hot air furnaces, and associated equipment. They provide steam, heat, and hot water for industrial and institutional facilities.
How much does a federal Boiler Plant Mechanic make?
Federal Boiler Plant Mechanics (WG-5309) are paid under the Federal Wage System based on local prevailing rates. Journeyman wages (WG-10/11) typically range $28-$45 per hour depending on locality. Annual earnings range $58,000-$94,000. Power plant mechanics earn premium rates.
What are the requirements for WG-5309 positions?
WG-5309 requires knowledge of combustion principles, heat transfer, and boiler operation. Qualifications include maintaining fuel systems, troubleshooting heating equipment, understanding pollution control, and operating industrial boiler systems safely.
Can military experience substitute for education in WG-5309?
Absolutely. Military boiler and heating experience directly qualifies. Navy Machinist Mates (MM), Navy Boiler Technicians (BT), Air Force power production specialists, and Army utilities MOSs with boiler plant experience provide exactly the skills needed.
What is the career progression for Heating and Boiler Plant Equipment Mechanic?
Boiler Plant Mechanics progress to journeyman (WG-10/11) and lead positions. Career paths include power plant operator, utilities supervisor, or facilities engineering. Stationary engineer licenses and certifications enhance advancement opportunities.
How do I apply for WG-5309 jobs on USAJOBS?
Search USAJOBS for 'Boiler' or 'Heating Plant' or series '5309.' Positions exist at power plants, large installations, and industrial facilities. Highlight your boiler certifications, combustion experience, and safety record. Veterans receive preference.
Ready to apply for WG-5309?
A rater matches your record against the announcement's specialized experience statement, inside two pages. BMR writes that shape from your own experience: competency headers, real scope, hours per week, and the supervisor detail the rater checks.