SERVICES MARKETS PROJECTS ABOUT CONTACT Certifications & Memberships Certifications Medical Gas Certification Expand Backflow Certification Expand Welding Qualification Expand CFC Freon Recovery/EPA Compliance Expand First Aid & CPR Expand Memberships General and Mechanical Services (GMS) of Maryland, is committed to using the most highly skilled technicians and providing them with the highest levels of training. As part of that commitment, GMS uses only Union labor and is an active member of a number of associations, including MCAA, who provide ongoing training and advice for members and their employees: AREAS WE SERVE Helping Maryland, Virginia, DC, Delaware and Pennsylvania properties & facilities with their mission critical HVAC, mechanical, plumbing and electrical systems since 1998. General & Mechanical Services 1007 Skidmore Dr Annapolis, MD 21409 PHONE: (410) 349-4070 FAX: (410) 349-4076 Services Commercial HVAC Commercial Plumbing Indoor Air Quality Data Center Power & Cooling Commercial Refrigeration Design Build Services Emergency Services (410) 349-4070 (410) 349-4070 Affiliations MCCA, MSCA , NECA, AWS © 2021 General & Mechanical Services, LLC | Privacy Policy | Website by City Dock Digital