Commercial HVAC Maryland

GMS is among the top commercial HVAC companies in Maryland providing a comprehensive range of heating and cooling services to meet all of your commercial air conditioning & heater installation, replacement, repair, and maintenance needs. We believe that properly designed, installed and maintained commercial HVAC systems conserve energy, cut absenteeism and increase productivity.

We have been designing, building and maintaining commercial heating and cooling units across the U.S. since 1998. Whether you’re looking to set up a preventative maintenance contract, replace or supplement an existing commercial air handling system, or would like to find out how to make your HVAC systems more efficient and extend their life, GMS can meet your needs.

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Commercial HVAC Services

  • Packaged Rooftop HVAC Equipment

    Commonly found in light and large commercial HVAC applications, GMS installs and maintains packaged rooftop units which contain all the components needed to provide conditioned air.

  • Central Utility Plant Solutions

    Our commercial HVAC contractors perform installation, maintenance, repair and retrofit services in the central utility plant for air handling and distribution systems, heating and hot water systems, chilled or condenser water systems, and steam and condensate systems. We take care of the cooling towers, chillers, pumps and mechanical systems that support the operation of your building

  • Ultra-efficient ductless & ducted, scalable VRF solutions

    GMS can help you solve the toughest HVAC challenges including occupant comfort, design and energy efficiency with variable refrigerant flow (VRF) systems from Mitsubishi.

  • Renovation and retrofit mechanical systems

    GMS utilizes our in-house engineering skills, technology and highly skilled field technicians to minimize a project’s timeline while adhering to the customer’s budget and needs.

  • Portable Cooling & Heating Rental Solutions

    GMS provides temporary and emergency solutions for heating and cooling failures in commercial buildings, data centers and industrial spaces.

  • Data Center Cooling

    GMS ensures uptime for your data center by installing and maintaining innovative cooling solutions that reduce data center energy costs.

  • Air Filtration Systems

    In facilities such as hospitals, schools and airports, airborne pathogens and odors can spread through the air system. In-duct air filtration systems such as UVC Light and Ionization are designed to disinfect the air as it passes through the HVAC system.

HVAC System on Roof
Chiller and Duct Install
AC Pipes

HVAC Design Build Retrofit Services

We are your one-stop-shop to design, engineer, install, service and retrofit the systems you need

GMS specializes in the renovation and retrofit of mechanical systems in existing data centers, commercial and industrial facilities. We utilize our in-house skills and technology to minimize a project’s timeline while adhering to the customer’s budget and needs. 

GMS provides a single point of contact for your project resulting in reduced design and construction schedules and offers pre-construction services including 3D scanning and prefabrication. Our team of highly skilled and certified field commercial HVAC contractors work to ensure the highest quality and value for our clients.

Operational Assessment & Energy Audits

Improve efficiency and reduce your annual utility bill

A best practice for energy efficient building operations. GMS can help you understand how your current building systems are operating and what improvements would be most beneficial and cost-effective. It is the first step to obtaining energy-efficient building performance and reducing your annual utility bill.

24/7 Emergency HVAC Repair

GMS provides experienced HVAC technicians 24/7 to deliver after-hour emergency HVAC repairs. We ensure fast, accurate heating and air repairs for clients throughout Maryland and in DC, Delaware and Northern Virginia. Whether you have an unexpected commercial HVAC repair or last minute heating and cooling system need, you can contact us 24 Hours a day / 7 Days a Week to resolve issues with equipment including:

No cooling/heating

Chiller repair

Furnace repair

Leaking unit

Preventative HVAC Maintenance

Avoid extensive, costly repairs and unplanned downtime with regularly performed preventative maintenance. An HVAC Equipment Preventative Maintenance Contract will undoubtedly increase energy efficiency and extend the life of your equipment. Additional advantages of regular maintenance visits include:

Fewer costly repairs

Increase energy efficiency

Reduce utility bills

Healthier air quality

GMS has the ability to service and maintain different infrastructure components, bringing additional benefits including just one service call for all of your critical building systems along with:

Priority response to all service requests

Email dispatch and computerized service call tracking system

Certified technicians with extensive factory training

GMS provides efficient and scalable cooling solutions from supplemental computer room air conditioner units to complete power and cooling installations.

GMS can help you put together a multi-tactic approach to help combat viruses, germs and bacteria within your building, office, school or medical facility.

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Areas We Serve

Helping Maryland, Virginia, DC, Delaware and Pennsylvania properties & facilities with their mission critical HVAC, mechanical, plumbing and electrical systems since 1998.

24/7/365 Emergency HVAC Services & Repair

Our experts are standing by to address your Commercial HVAC emergency.


Preventative HVAC Maintenance

Avoid costly repairs with preventative HVAC maintenance. Increase energy efficiency and extend the life of your equipment.