Md. Code Ann., Bus. Reg. § 9A-301
Except as otherwise provided in this title, an individual shall be licensed by the Board before the individual provides or assists in providing heating, ventilation, air-conditioning, or refrigeration services in the State.
Acts 1992, c. 649; Acts 1993, c. 5, § 1. Amended by Acts 2023, c. 340, § 1, eff. Oct. 1, 2023; Acts 2025, c. 386, § 1, eff. Oct. 1, 2025.