Arlington, VA – GHT Limited (GHT), a leading DC metro area mechanical, electrical, and plumbing (MEP) engineering firm, is pleased to announce the promotion of 16 staff members. The firm named five new Senior Associates and 11 new Associates.

“The promotion of these 16 staff members reflects GHT’s commitment to reward our employees who demonstrate a drive to innovate and a commitment to doing ‘whatever it takes’ to meet our clients’ needs,” says President Paul C. O’Brien, PE, LEED AP ID+C.

New Associates

  • Joel W. Bell, PE, LEED AP ID+C
  • Douglas J. Boswell, PE, LEED AP ID+C
  • Adam A. Demnati, PE, LEED AP
  • Brian S. Hackett
  • Tim W. Laddbush, PE
  • William Brodie Marrow
  • Timothy Bradley McNiff, PE
  • John L. Puchala, CPD
  • Matthew C. Richter, PE, LEED AP
  • Tonya D. Street
  • Cindy L. Weeks

New Senior Associates

  • Kristine Barr, CDT
  • Ali J. Landaeta, MCSE, MCP+i
  • Francisco S. Lao
  • Derek E. Wilson, CPD
  • Morty Zemedhun

About GHT Limited
GHT helps optimize building performance. We provide sustainable mechanical, electrical, and plumbing (MEP) engineering services for commercial office buildings, tenant interiors, and government properties, as well as institutional, hospitality, and mission critical environments. GHT's areas of expertise include MEP system design, commissioning, building energy services, and real estate advisory services. Based in Arlington, VA, GHT is one of the largest locally owned and headquartered MEP consultants in the Washington D.C. metro area. Since our founding in 1965, GHT has remained on the leading edge of technology to deliver sustainable MEP engineering solutions that balance comfort, efficiency, and purpose.

Learn more about GHT at and

GHT Limited
Ami Kelly, LEED AP
Director of Marketing & Business Development
1010 N. Glebe Road, Suite 200
Arlington, VA  22201-4749
703-243-1200 | |