• D2 Engineering has
    completed projects
    for a wide variety of clients

  • Hospitals &
    Medical Facilities

  • Mission Critical
    Electrical Projects

  • MEP services for
    Office Building &
    Shopping Centers

Electrical, Mechanical, Plumbing Engineering Design Services
Specializing in Design and Construction Services for Commercial Facilities

D2 ENGINEERING is an experienced engineering design company providing superior engineering design, construction services, and commissioning for new construction, renovations, mission critical and tenant fit outs.

D2 ENGINEERING offers a vast knowledge of design and expertise in commercial facilities. We focus on providing for our client the quality performance achieved in a cost effective and timely manner. The principals and key personnel of D2 ENGINEERING are experienced in mechanical, electrical, and plumbing systems. The principals have over 30 years of experience.

mechanical engineering

Mechanical Engineering

Delivering high quality, professional engineering design and construction services.

Electrical Engineering

Electrical Engineering

Mission Critical - consulting services to complete design and construction services; to build a facility from the ground up.

Plumbing Engineering

Solutions that are practical, effective, and proven as well as ideas that are well-honed to the business challenges our clients face


D2 Engineering has worked with numerous building owners in modifying and retrofitting their HVAC systems to minimize the potential airborne spread of CONVID 19.

MARKETS: Commercial Buildings, Schools, Medical Facilities, Retail, Warehouses, Data Centers, Labs amd Residential-Multi-Family Units

D2 Engineering has completed projects for a wide variety of clients, including Hughes Network Systems, Discovery, Georgetown University, Montgomery County Government, FDA, Holy Cross Hospital, Montgomery College, Avison Young, Congressional Country Club, CIM, and PS Business Parks.

Latest Portfolio

Showcasing our latest engineering projects.

Other Services

Engineering Construction


  • Analysis of Project M/E/P Requirements
  • Comparative Reliability Analysis
  • Life Cycle Studies and Cost Analysis

Design & Pre-Construction

Mechanical/Plumbing systems design and coordination with Architect & Civil Engineer.

Electrical design and coordination with Architect and all other disciplines. SEE MORE NOW!


  • Development of HVAC and Electrical Commissioning Procedures and Specifications tailored for the specific project
  • Building Systems Integration Testing
  • Factory Witness & Acceptance Testing

D2 ENGINEERING is gaining in stature as a respected engineering design company.

Since 2001, D2 ENGINEERING, has successfully completed over 3000 projects