Mon-Fri 8:00am to 4:00pm ET
Phone: 443-949-9842
Fax: 443-949-9863

Mail Us

sduffy@hdmechanical.net
eharley@hdmechanical.net
jkushner@hdmechanical.net

Address

7703 Crain Highway

Upper Marlboro, MD 20772

Mechanical Construction Services

Mechanical Construction Services Include:

Mechanical Services

  • Balancing
  • Clean Rooms
  • Commissioning Assists
  • Controls
  • Facility Management
  • HVAC (heating, ventilating & air conditioning)
  • Medical Gasses
  • Plumbing
  • Plumbing & Mechanical Service
  • Sheet Metal
  • Value Engineering

Preconstruction & Design Build Services

  • Design/Build Services
  • Design/Assist Services
  • Green Building & LEED Construction
  • Fast Track
  • Fixed Price
  • Lump Sum
  • Procurement & Expediting Services

About Us

Founded by Sean Duffy and Erik Harley in 2009, H&D Mechanical is a mid-size mechanical contractor based in Upper Marlboro, Maryland. H&D has an established record of superior work in a variety of settings, including medical, scientific and commercial projects.

Contact Us

7703 Crain Highway
Upper Marlboro, MD 20772

443-949-9842

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