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Already have what you need to complete an application or renewal? Visit iMS, the department’s online application and renewal system, to get started

The information below will help you complete the application or renewal successfully.

How do I become licensed as a boiler engineer in Minnesota?

You must pass a written exam for a boiler engineer license.

To take the exam, submit an affidavit of operating experience.

You can apply online to be approved to take the exam. The exam fee is $50.

  • When you are approved to take the exam you will receive instructions about how to schedule your exam.

  • Boiler exams are administered at all DLI exam locations, though only on specifically scheduled days.

  • The time limit for all boiler exams is 2.5 hours.

  • If you cannot appear for a scheduled exam, you can reschedule one time without having to reapply and pay a second exam fee.

  • View more information about exams.

Boiler licenses expire every two years at the end of the month in which the license was originally issued.

View boiler license renewal fees.

Access iMS to begin the license application or renewal process.

Provisional and historical engineer licenses

Forms and applications

Licensing and exam resources


Contact us at or 651-284-5034.