Division of Occupational and Professional Licensing


County License/Permits - Maryland Board of Heating, Ventilation, Air Conditioning and Refrigeration Contractors


Anne Arundel and Prince Georges Counties also require individuals to hold a county HVACR license as well as a Maryland HVACR license in order to perform HVACR services in those counties.

In other counties and cities, local plumbing, gasfitting and electrical permits may be required before HVACR work can begin. Check with local permit agencies for details.

Counties and cities may require adherence to building and mechanical code in lieu of or in addition to those required by the Maryland Board. Consult with the local agencies for details.