HVAC Technician License Requirements in Maine
License RequiredLast verified March 24, 2026
Agency And Exam
Issuing agency: Maine Department of Professional and Financial Regulation – Office of Professional and Occupational Regulation
Official licensing agency website
Exam provider: PSI
Reciprocity And License Levels
License levels
Journeyman Oil Burner TechnicianMaster Oil Burner TechnicianJourneyman Warm Air Heating and CoolingMaster Warm Air Heating and Cooling
Reciprocity states
None listed
Notes
Maine OPOR licenses oil burner technicians and warm air heating/cooling technicians. Journeyman requires 4,000 hours of apprenticeship; Master requires journeyman license plus additional experience. PSI administers exams. Separate categories exist for oil burner and warm air systems.