Critical Systems is one of the fastest growing engineering services firms in the D.C., Maryland, Northern Virginia, and New England markets.  Our mission is to support customer needs and green initiatives with high quality products and innovative system solutions. Our sales, engineering, and building services teams consist of technically focused individuals with over 350 years of experience. We have the expertise and resources to assist building owners, architects; engineers and construction teams with mechanical strategies that meet current and future challenges.


As a representative and agent of HVAC manufacturers from all over the world, Critical Systems offers products, knowledge, and services that motivate results aspired by forward thinking building owners and their development teams. We are well invested in the continuous education of clients and staff on new strategies that deliver positive industry results.


Our focal points:

·  Environments for business, learning, communication, protection and healing

·  Energy efficiency and environmental impact

·  System and product reliability

·  Installation and maintenance advancement

·  Acoustical control and problem solving

·  Occupant safety

·  Infrastructure security

·  Indoor air quality

Rockville, MD


12216 Parklawn Drive, Suite 201

Rockville, MD 20852

301.545.5100 (p)

866.400.0750 (f)

240.638.9768 Service Hotline

New England


58 Winter Street, 4th Floor

Boston, MA 02108

617.315.1300 (p)

866.400.0750 (f)

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