390 Madison Avenue

Location:New York, NY
Architect:Kohn Pedersen Fox Associates
Client:L&L Holdings
Size:900,000

390 Madison is the first 21st-century institutional building in midtown and the first full-block development on Park Avenue in nearly 50 years. The 24-story building has been completely redesigned; it features a new exterior, higher ceilings and a new floor plan. Two full floors were removed and the height of the building increased by eight new floors while maintaining the same 900,000 square feet of floor area. By remassing the building, and pulling out 20% of the existing structure, eight outdoor terraces and column-free spaces were created.

As both Building Envelope and Energy consultants, our integrated team worked together to achieve the architect’s and client’s vision of a comfortable, energy-efficient building. Vidaris also helped the project earn energy efficiency incentives for efficient chillers, low power lighting and controls, and low-flow faucets through NYSERDA. Finally, we performed computational fluid dynamics (CFD) analysis for two atriums with large and tall glass areas to assess HVAC and envelope characteristics needed to reduce the risk of moisture condensation.

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