Business Details
28 Years
experience
Emergency
services
Your Partner for HVAC, Plumbing & Data Center Solutions
Since 1998, General & Mechanical Services (GMS) has established itself as a leader in designing, building, and maintaining mission-critical mechanical systems across the Mid-Atlantic region. Headquartered in Annapolis, MD, our certified team delivers comprehensive HVAC, plumbing, electrical, and data center cooling solutions tailored to government, healthcare, education, and commercial facilities. We prioritize reliability, responsiveness, and quality, backed by a commitment to energy efficiency and honest pricing.As part of the Crete United nationwide network, we combine local expertise with multi-service capabilities to address complex infrastructure needs. Our in-house engineering and project management teams ensure seamless design-build projects, while 24/7 emergency services guarantee rapid resolution of critical system failures. With decades of experience and a focus on innovation, we provide cost-effective, sustainable solutions that enhance building performance and occupant comfort.
Services
Commercial HVAC
Commercial Plumbing
Data Center Cooling
Indoor Air Quality
Design Build Services
Emergency Repairs
Preventative Maintenance
Details
- Year established: 1998
Highlights and features
- We offer 24/7 emergency HVAC and plumbing services with rapid response times.
- Our certified technicians have over 25 years of experience in mission-critical systems.
- We provide energy-efficient solutions that reduce operational costs by up to 30%.
- Single-source responsibility for design-build projects ensures streamlined timelines.
- Part of a nationwide network offering multi-disciplinary building infrastructure solutions.
Services
Commercial HVAC
We design, install, and maintain commercial HVAC systems that optimize energy efficiency and occupant comfort. Our services include rooftop unit maintenance, VRF solutions, and emergency repairs for businesses across Maryland and the Mid-Atlantic region. With 25+ years of experience, we ensure reliable climate control for mission-critical facilities.
Data Center Cooling
Our data center cooling solutions ensure uptime through precision cooling systems and energy-efficient designs. We specialize in CRAC units, in-row cooling, and modular UPS installations to protect critical IT infrastructure. Preventative maintenance contracts help minimize downtime risks for Maryland and DC-based data centers.
Commercial Plumbing
We provide comprehensive plumbing solutions for commercial and industrial facilities, including backflow prevention, process piping, and medical gas system installations. Our certified plumbers offer 24/7 emergency repairs and preventative maintenance across Maryland, Virginia, and Delaware.
Indoor Air Quality
Our IAQ solutions combat pathogens and allergens using UV lighting and ionization technology. We install systems that integrate with existing HVAC infrastructure to improve air quality in schools, hospitals, and commercial buildings throughout the Mid-Atlantic region.
Design Build Services
Our design-build approach combines engineering expertise with field execution for HVAC, plumbing, and electrical systems. We handle projects from concept to completion, offering 3D scanning, prefabrication, and energy audits to streamline construction timelines for Maryland clients.
Questions
What HVAC services do you offer for commercial buildings?
We provide full-service commercial HVAC solutions including installation, maintenance, repairs, and energy audits. Our expertise covers rooftop units, VRF systems, and emergency repairs for facilities in Maryland and the Mid-Atlantic region.
Do you provide 24/7 emergency plumbing services?
Yes, our certified plumbers are available 24/7 for emergency repairs, including leak detection, drain clearing, and medical gas system issues across Maryland, Virginia, and Washington D.C.
What areas do you serve?
We serve Maryland, Virginia, Washington D.C., Delaware, and Pennsylvania, with headquarters in Annapolis, MD. Our technicians respond to emergency service requests throughout these regions.
Can you help with data center cooling optimization?
Yes, we specialize in data center cooling solutions including CRAC units, in-row cooling systems, and energy efficiency upgrades. We also offer modular UPS installations and 24/7 monitoring services.
What preventative maintenance programs are available?
We offer customized maintenance contracts for HVAC, plumbing, and data center systems that include quarterly inspections, priority response, and energy efficiency optimization to reduce long-term operational costs.
Are you part of any industry associations?
We maintain affiliations with MCCA, MSCA, NECA, and AWS, ensuring our team stays current with industry standards and best practices for mechanical contracting services.
