# Business Regulation (GBR)

## Title 9A. Heating, Ventilation, Air-Conditioning, and Refrigeration Contractors

### Subtitle 4. Miscellaneous Provisions

#### Section 9A-404

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.

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Md. Code Ann., Bus. Reg. (as displayed at mgaleg.maryland.gov, October 16, 2026)