US lawMarylandStatutesArticle gbrTitle 9ASubtitle 29A-201Md. Code, Business Regulation § 9A-201§9A–201.Last amended: 2025Year: 2026Length: 15 wordsOfficial source There is a State Board of Heating, Ventilation, Air-Conditioning, and Refrigeration Contractors in the Department.NextMd. Code, Business Regulation § 9A-202