Air Zone International - Under Floor Airconditioning
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Main Place

960,000 SF
LEED Silver
Developer: Hines
Architect: Pickard Chilton
Consulting Eng: Wylie Associates
  • 100 Vertical Upblast Air Columns
  • 12,000 CFM each
  • 41/42 NC Certified Sound Performance
  • CW Coils and UV Lights
  • Direct Drive Plenum Fan with Patented Easy Rollout

  • The Situation:

    Hines Development is the preeminent developer of green buildings in the U.S., with over 30 million square feet of green buildings built or currently under construction - more than any other developer in North America. Hines wanted to create a 21st century icon for downtown Houston. At 46 stories, this building at Main Place will be Houston’s next great downtown landmark.

    Hines is no stranger to building worldclass office buildings that attract the best tenants. Wylie Associates, the MEP consulting engineer on the project, was tasked with designing a cost effective mechanical system that consumed low amounts of energy and reduced the per floor mechanical room footprint. The challenge: how could tenant space be saved, the floor-by-floor AHus have quiet performance, and energy consumption be minimized?

    Although it seemed like competing objectives, Air Zone International was ready to embrace the challenge.

    Our Solution:

    Designing a building to better ASHRAE 90.1: 2004 Baseline Building Performance is no easy task - especially when that building is located in a hot, humid climate. According to Wylie Associates, the Air Zone Vertical Upblast Air Towers contributed in a significant way toward the building’s overall operating cost savings. Why are Air Zone’s air columns more energy efficient that other solutions? Our Direct Drive Plenum Fans with High Efficient Motors use up to 6% less energy than “standard” offerings, and our ultra low leakage casing design ensures optimal performance.

    Of course, the real key to making this design application work is to build units that are quiet enough to be positioned in the tenant space. Constructing a column unit with MER V 13 Filters, CW coils, UV Lights, and an open mechanical room return plenum that can meet rigorous NC 42 sound requirements in an independent lab at the maximum CFM was a challenge – but Air Zone met these requirements.

    The Results:

    Exacting clients like Hines want air units that will last a long time. Our relationship with Hines is one that we value greatly, and we take customer service very seriously.

    Our column units successfully passed NC 42 sound levels where other manufacturer’s equipment has had challenges.

    Our vertical column units are economical, especially compared to the costs they avoid. It has been estimated that every square foot of tenant space saved is worth $600 for the building’s valuation. Our compact footprint was estimated to have saved 50SF per floor when compared to traditional core mechanical rooms with horizontal units.

    Air Zone’s column units are used in hospitals, laboratories, offices and factories. They are versatile, rugged and quiet. The compact vertical column unit footprint allowed the design team to minimize the floor space required for mechanical rooms significantly compared to similar building types. Call today to see what Air Zone can build for you.



    The Brains of the Operation
    In the July Issue of Engineered Systems Magazine, Julie DeNardis with ESD talks about the HSBC project in Chicago which utilized Air Zone’s Mixed Flow Column Units.

    Lights Out Houston
    Air Zone was proud to once again be an organizing sponsor for Lights Out Houston 2009. Over 111 Million SF of building property managers and tenants pledged to forever turn off unnecessary lighting – visit for more information.

    Air Zone Tower Units Go in one of the world’s most energy efficient skyscrapers.
    National Geographic takes you behind the scenes of One Bryant Park.

    3 New Downtown Office Towers in Houston and Denver are awarded to Air Zone International.
    Each of these green projects features our custom air handling units for overhead distribution.

    Air Zone teams with Tate in joint marketing initiative.
    An initiative that will offer quiet, compact and energy efficient supply air to underfloor service distribution systems.

    Hess Explores Discovery Tower
    A likely candidate considers entire 30-stories, of which Air Zone International manufactured the air units.

    Architecture 2030 Mission
    Immediate action required to reverse buildings' emissions.

    © 2012, Air Zone International

    5220 Ted Street   |   Houston, Texas 77040   |   office (713) 460-4040   |   fax (713) 460-4050