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How to become a licensed Boiler Operator in District of Columbia. State license required. Total initial fees: $150-$225. Verified 2026-03-21. Data verified 2026-03-21. Source: LicenseMap (getlicensemap.com).
Boiler Operator — BO
Governing Authority
District of Columbia Department of Consumer and Regulatory Affairs
Official website →Some information on this page has not been fully verified.
9% of data points are verified against official sources. 32 fields based on preliminary research. We recommend confirming details with your state's licensing authority. See sources below · Report incorrect data
Yes
License Required
3
License Grades
Yes
Exam Required
$150-$225
Total Initial Fees
Biennial (every 2 years)
Renewal Period
No
CE Required
District of Columbia boiler operator licensing overview
Mostly verifiedRequired
State License
3
License Grades/Classes
18+
Minimum Age
License Grades / Classes
Steam Engineer License — 3rd Class
For operating boilers of limited horsepower
Experience: 1 year experience
Boiler Types: Low-to-mid capacity steam boilers
Steam Engineer License — 2nd Class
For operating larger boilers
Experience: 2 years experience
Boiler Types: Mid-to-large capacity steam boilers
Steam Engineer License — 1st Class
Unlimited boiler operation
Experience: 3+ years experience
Boiler Types: All boiler types, unlimited
Boiler operator licensing requirements vary significantly by state. Some states require multiple grades of licenses based on boiler size and pressure rating, while others do not require a state-level license at all. The ASME Boiler and Pressure Vessel Code provides the national standard for boiler safety. Always verify current requirements with your state licensing authority.
Education, experience, and training requirements
Mostly verifiedEducation Required
High school diploma or equivalent
Experience Required
1-3+ years of experience depending on license class
Apprenticeship
Not Required
Training Programs
On-the-job training under licensed engineer
Boiler operator training typically combines classroom instruction with hands-on experience. Many states require a combination of formal education and documented operating experience before licensure. The National Board of Boiler and Pressure Vessel Inspectors (NBBI) and industry associations offer additional training and certification programs.
Examination requirements and details
Mostly verifiedExam Required
Yes
Exam Provider
DC Department of Consumer and Regulatory Affairs
Passing Score
70%
Exam Details
Written examination covering boiler operation, steam engineering, and DC regulations
Retake Policy
May retake after additional study
Applicable Codes & Standards
ASME Boiler and Pressure Vessel Code
Boiler operator examinations typically cover ASME Boiler and Pressure Vessel Code, boiler operation principles, safety procedures, and state-specific regulations. Some states use examinations from the National Institute for the Uniform Licensing of Power Engineers (NIULPE), while others administer their own exams.
Insurance and bonding requirements
Mostly verifiedInsurance Required
No
Bonding Required
No
Most states do not require individual boiler operators to carry personal insurance or bonding. Employers typically carry workers' compensation and general liability insurance that covers boiler operations. Facilities with boilers are generally required to have boiler and machinery insurance.
| Fee | Amount |
|---|---|
License Fee District of Columbia boiler operator license fee | $75 |
Exam Fee Examination fee | $75 |
Renewal Fee Renewal fee per cycle | $75 |
Total Initial Fees Total estimated initial costs including license and exam fees | $150-$225 |
Renewal requirements and ongoing obligations
Mostly verifiedBiennial (every 2 years)
Renewal Period
Not Required
Continuing Education
N/A
CE Hours per Cycle
Renewal Fee
$75
Renewal requirements vary by state. Most states that license boiler operators require annual or biennial renewal. A few states require continuing education to maintain licensure. Failure to renew on time may result in lapse of license and the need to retake examinations.
DC's steam engineer licensing reflects the large number of federal and commercial buildings requiring central steam heating systems.
The District of Columbia requires steam engineers and boiler operators to be licensed.
Three classes of steam engineer licenses are available, with 1st Class being the highest.
Large commercial and government buildings in DC require licensed operators.
There is no interstate compact for boiler operators.
Explore requirements for other professional licenses in District of Columbia.
How this state compares to 50 others for this profession
Salary
#1 of 51
Based on May 2024 Bureau of Labor Statistics OEWS data for Stationary Engineers and Boiler Operators (SOC 51-8021)
Entry Level
N/A
25th percentile
Median
$82,400
+25% vs. national avg ($65,850)Experienced
N/A
75th percentile
Wage Distribution (Annual)
Source: BLS OEWS – Stationary Engineers and Boiler Operators (May 2024)
National employment projections for 2022-2032
Projected Growth
+2%
Average GrowthNew Jobs
N/A
over 10 years
Annual Openings
N/A
per year (avg.)
N/A currently employed nationwide (2024)
Source: BLS Employment Projections 2022-2032 (September 2023)
Government fees and exam costs to obtain your initial license
Note: These are government licensing fees only. Education/training program costs (tuition, books, etc.) are not included as they vary widely by institution.
Source: District of Columbia Department of Consumer and Regulatory Affairs
Estimated total: 4–12 weeks
Timeline estimated from licensing requirements on this page.
Source: District of Columbia Department of Consumer and Regulatory Affairs
4–12 weeks
Estimated processing time
Source: District of Columbia Department of Consumer and Regulatory Affairs
Study guides and practice tests for boiler operator licensing exams.
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Accessed 2025-01-15
District of Columbia requires boiler operators to hold a state license. 3 license grade(s) are available for different boiler types and capacities. Boiler safety in District of Columbia is overseen by the District of Columbia Department of Consumer and Regulatory Affairs.
Requirements vary by state. Always verify current requirements with your state licensing authority.