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District of Columbia license examsElectrician, Plumber and HVAC
District of Columbia tests electrician, plumber and HVAC license applicants. Each trade has its own exam and testing company.
Journeyman and master exams in District of Columbia
Electrician
- Who gives it
- PSI; exams are scheduled online at psiexams.com or by phone1
- Code book
- National Electrical Code (the 2011 edition is listed in the board's application instructions)
- Open book
- Yes
Plumber
- Who gives it
- PSI; exams are scheduled online at psiexams.com or by phone1
- Code book
- International Plumbing Code and International Fuel Gas Code (2012 editions are listed in the board's application instructions)
- Open book
- Yes
HVAC
- Who gives it
- PSI; exams are scheduled online at psiexams.com or by phone1
- Code book
- International Mechanical Code (the 2012 edition is listed in the board's application instructions)
- Open book
- Yes
How do you book the exam?
Apply to the DLCP first. The board approves your application, then tells you how to schedule with the testing company. Dept of Licensing and Consumer Protection (DLCP)
Sources
- District of Columbia electrician license: exam (dlcp.dc.gov, 2026-10-27)