Each licensed master, master restricted, or limited heating, ventilation, air–conditioning, and refrigeration contractor shall display: the license and the license number conspicuously in the principal place of business of the licensee; and the license number of the licensee on each vehicle used on the job for providing heating, ventilation, air–conditioning, or refrigeration services. Except as provided in paragraph (2) of this subsection, a county or municipal corporation may not require a person licensed under this subtitle to display a county or municipal corporation certificate number on each vehicle used on the job for providing heating, ventilation, air–conditioning, and refrigeration services. This subsection does not apply to Anne Arundel County. Each licensee shall give the Board written notice of any change of name, address, or employment from that which appears on the current license, at least 10 working days before the change is to take effect.

A holder of a master, master restricted, or limited heating, ventilation, air-conditioning, and refrigeration license may not contract to provide services on behalf of the licensee, or another person who provides heating, ventilation, air-conditioning, or refrigeration services, unless the work of the licensee, including completed operations, is covered by: general liability insurance in the amount of at least $300,000; and property damage insurance in the amount of at least $100,000. The insurance required under this section may be bought: by a holder of a master, master restricted, or limited heating, ventilation, air-conditioning, and refrigeration license; or by the person who engages in the business of providing heating, ventilation, air-conditioning, or refrigeration services and employs the holder of the master, master restricted, or limited license. The insurance requirement of this section is not meant for work that a master, master restricted, or limited license holder does outside the scope of employment for the person who carries the insurance. A licensed apprentice, licensed journeyman, or licensed journeyman restricted in the employ of a master, master restricted, or limited licensee need not obtain separate insurance while providing or assisting in providing heating, ventilation, air-conditioning, or refrigeration services under the control and supervision of the licensee. Subject to the restrictions of § 9A-309 of this title regarding inactive status, inactive licensees who have had their inactive status approved by the Board need not obtain insurance while maintaining inactive status. An applicant for any license under this title shall submit proof of the insurance required under this section to the Board with the license application. Unless the applicant submits proof of insurance, the Board may not issue any license to an applicant to whom the insurance requirements of this section apply. Unless an applicant meets the insurance requirements of this section, the Board may not renew any license of the applicant to whom the insurance requirements of this section apply. A holder of a master, master restricted, or limited license shall give the Board notice of the cancellation of insurance at least 10 days before the effective date of the cancellation. If a county, municipal corporation, special taxing district, or other political subdivision requires a master, master restricted, or limited heating, ventilation, air-conditioning, and refrigeration license holder, or other person who engages in the business of providing heating, ventilation, air-conditioning, and refrigeration services, to execute a surety bond under local heating, ventilation, air-conditioning, and refrigeration requirements, the person may satisfy the bond requirement by submitting proof of the insurance required under this section. The Board shall specify on each license whether the license holder meets the insurance requirements of this section.

Each individual whom the State, a county, or a local government appoints or employs as a heating, ventilation, air-conditioning, and refrigeration inspector shall: each year attend a continuing education course that the Board or, with the approval of the Board, a county or local government conducts; and meet minimum standards that are: established by the Board; and administered: for a county or local government inspector, by the county or local government that appoints or employs the inspectors; and for a State inspector by the State. An individual may not have any financial interest in any business that provides heating, ventilation, air-conditioning, or refrigeration services while employed by the State, a county, or any local government as a heating, ventilation, air-conditioning, and refrigeration inspector. On appointment or employment, the individual shall place any license that the inspector holds on inactive status subject to § 9A-309 of this title. The Board may issue a heating, ventilation, air-conditioning, and refrigeration inspector identification card to an inspector who has placed the appropriate licensee on inactive status. On termination of the appointment or employment of an individual as a heating, ventilation, air-conditioning, and refrigeration inspector, the Board shall reactivate the license of the individual who is on inactive status, without examination, if the individual: makes a written request to the Board; and pays to the Board a reactivation fee established by the Board.

Each advertisement for heating, ventilation, air-conditioning, or refrigeration services that is in the name of a person who provides heating, ventilation, air-conditioning, or refrigeration services shall contain the license number and name of a master, master restricted, or limited license holder whom the person employs and designates to direct and control the provision of heating, ventilation, air-conditioning, or refrigeration services through the business of the person.