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Boiler Operator License
Total cost: $100-$150
Some details on this page are not yet confirmed against an official source. See sources below or contact the licensing board to verify.
Yes
License Required
5
License Grades
Yes
Exam Required
$100-$150
Total Initial Fees
Biennial (every 2 years)
Renewal Period
No
CE Required
You must be at least 18 years old. Verify all eligibility requirements with the Maryland Department of Labor — Boiler and Pressure Vessel Unit.
Education: High school diploma or equivalent. Experience: Progressive experience required for each grade — 1 year per grade advancement. Approved programs: On-the-job training; approved training programs accepted.
Maryland offers 5 license grades: Stationary Engineer — Grade 5, Stationary Engineer — Grade 4, Stationary Engineer — Grade 3, Stationary Engineer — Grade 2, Stationary Engineer — Grade 1. Each grade covers different boiler types and capacities. Choose the grade that matches the equipment you will operate.
Written examination covering boiler operation, steam engineering, ASME codes, and Maryland regulations Administered by Maryland Department of Labor. Passing score: 70%. Based on ASME Boiler and Pressure Vessel Code. Exam fee: $50. Retake policy: May retake after 30 days.
Submit your application to the Maryland Department of Labor — Boiler and Pressure Vessel Unit. License fee: $50. Total initial fees: $100-$150.
Renew your license biennial (every 2 years). Renewal fee: $50.
Total startup cost for boiler operator licensing
License Fee
$50
Maryland boiler operator license fee
Exam Fee
$50
Examination fee
Renewal Fee
$50
Renewal fee per cycle
Total estimated initial costs including license and exam fees
Maryland boiler operator licensing overview
Mostly verifiedRequired
State License
5
License Grades/Classes
18+
Minimum Age
License Grades / Classes
Stationary Engineer — Grade 5
Entry-level, for operating low-pressure boilers
Experience: Basic knowledge of boiler operation
Boiler Types: Low-pressure boilers
Stationary Engineer — Grade 4
For operating small high-pressure boilers
Experience: 1 year experience at Grade 5
Boiler Types: Boilers up to specified capacity
Stationary Engineer — Grade 3
For operating mid-capacity boilers
Experience: 2 years experience
Boiler Types: Mid-capacity boilers
Stationary Engineer — Grade 2
For operating large boilers
Experience: 3 years experience
Boiler Types: Large capacity boilers
Stationary Engineer — Grade 1
Chief engineer, unlimited operation
Experience: 4+ 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.
Not sure if you need a boiler operator license? Check whether your state requires one.
Education, experience, and training requirements
Mostly verifiedEducation Required
High school diploma or equivalent
Experience Required
Progressive experience required for each grade — 1 year per grade advancement
Apprenticeship
Not Required
Training Programs
On-the-job training; approved training programs accepted
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.
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Examination requirements and details
Mostly verifiedExam Required
Yes
Exam Provider
Maryland Department of Labor
Passing Score
70%
Exam Details
Written examination covering boiler operation, steam engineering, ASME codes, and Maryland regulations
Retake Policy
May retake after 30 days
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.
Overall licensing difficulty: 1/100
Study recommendation: 1–2 weeks of focused review is usually sufficient
Browse study guides
Boiler Operator Exam Prep Materials
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Difficulty rating based on education, exam, and experience requirements. Individual experience may vary.
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 Maryland boiler operator license fee | $50 |
Exam Fee Examination fee | $50 |
Renewal Fee Renewal fee per cycle | $50 |
Total Initial Fees Total estimated initial costs including license and exam fees | $100-$150 |
Use our licensing cost calculator to estimate your total investment including education and exam fees.
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See how quickly your license investment pays for itself.
Renewal requirements and ongoing obligations
Mostly verifiedBiennial (every 2 years)
Renewal Period
Not Required
Continuing Education
N/A
CE Hours per Cycle
Renewal Fee
$50
Regulatory Board
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.
Maryland's 5-grade system allows engineers to progressively advance through experience and examination.
Maryland has a 5-grade stationary engineer licensing system, with Grade 1 being the highest.
The Department of Labor's Boiler and Pressure Vessel Unit administers the program.
All buildings with high-pressure boilers must have a licensed engineer present during operation.
There is no interstate compact for boiler operators.
Maryland does not hold a reciprocal agreement for a stationary engineer's license examination waiver with any other state.
Boiler Operator requirements in nearby states
| State | Total Cost | Timeline | |
|---|---|---|---|
| Maryland (you) | $100 | 4–12 wks | |
| District of Columbia | $150 | 4–12 wks | → |
| Delaware | N/A — No state license required | 1–4 wks | → |
| Pennsylvania | $70 | 4–12 wks | → |
| Virginia | $70 | 4–12 wks | → |
See how Maryland compares: Boiler Operator License Fees by State — Cheapest to Most Expensive →
Compare boiler operator requirements across all states →
Boiler Operator licensing requirements nationwide →
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How does Maryland compare to other states for boiler operator? See the full comparison →
Calculate the return on investment for your boiler operator license →
Explore requirements for other professional licenses in Maryland.
Boiler Operator Schools in Maryland
Compare approved training programs, costs, and requirements.
Study guides and practice tests for boiler operator licensing exams.
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Boiler Operator requirements in Maryland verified against Maryland Department of Labor — Boiler and Pressure Vessel Unit, March 2026.
Accessed 2025-01-15
Moving to Maryland? Use our free Transfer Tool to see what you need →
Already licensed elsewhere? See how to transfer your Boiler Operator license to Maryland →
Transfer your Boiler Operator license from Maryland to: Delaware → | Pennsylvania → | Virginia → | West Virginia → | District of Columbia →
Maryland requires boiler operators to hold a state license. 5 license grade(s) are available for different boiler types and capacities. Boiler safety in Maryland is overseen by the Maryland Department of Labor — Boiler and Pressure Vessel Unit.
Requirements vary by state. Always verify current requirements with your state licensing authority.