Efficiency in Repurposed Office Tower

McKenney’s upgraded multiple systems for 50-year old office building being rededicated into a mixed-use office and hotel space.


Fourteen floors of the 27-story office building were occupied by tenants, including a bank on the lobby level, while McKenney’s worked to install the new HVAC, plumbing and control systems. The complex project involved multiple design changes, replacing chillers, adding cooling towers, boilers, pumps, four 25,000 CFM air handlers, 208 vertical stack fan coil units and 1,000-gallon and 750- gallon hot water storage tanks.


The team carefully coordinated and sequenced the work, including closures on high traffic streets, to finish each stage cost effectively while maintaining a tight schedule. A helicopter lift was used to replace the 1,500-ton wooden rooftop cooling towers with space saving, high efficiency units. Material handling took place during night shifts to minimize disruptions to tenants.


The HVAC updates for this multifaceted project were completed on-time and on-budget, paving the way for the owner to complete renovations on schedule.

Project Name

Urban Mixed-use Office and Hotel Space


Atlanta, Georgia


Owner: Large Commercial Real Estate Company
General Contractor: Holder Construction Company
Architect: John Portman and Associates
Engineer: Newcomb and Boyd
Contractor: McKenney’s, Inc.

  • Design/Assist
  • Pipe Shop Prefab
  • Plumbing Shop Prefab
  • Sheet Metal Shop Prefab
  • Commercial Offices
  • Hospitality
  • Mixed-use & Multifamily