NYC SCA: P.S. K399
Rooftop Unit Replacement
P.S. K399 RTU Replacement, Brooklyn, NY
New rooftop units and controls, delivered as prime consultant.

Project Brief

As Prime Consultant, KeRi designed the replacement of the existing three (3) rooftop package units with steam heating on new steel dunnage roof supports, replaced exhaust fans, and provided new VAV and fan-powered VAV terminals with steam reheat coils, along with a new standalone DDC controls system. The construction cost was approximately $3.2 million, completed in 2022.

MEP Engineering Scope

P.S. K399 RTU Replacement interior

What We Engineered

Rooftop unit replacement and controls:

  • Three new rooftop package units with steam heating on new steel dunnage supports
  • Replacement exhaust fans
  • New VAV and fan-powered VAV terminals with steam reheat coils
  • New standalone DDC controls system

The Challenge

Replacing three rooftop package units on an existing school roof meant new structural support, fresh air distribution, and modern controls without an extended loss of heating or cooling.

Our Solution

As Prime Consultant, KeRi designed new rooftop units on steel dunnage supports with VAV and fan-powered VAV terminals, steam reheat, and a new standalone DDC controls system for reliable, zoned comfort.

Previous Project P.S. 403Q Pre-K Next Project P.S. 235K AC Upgrade

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