200 West Madison, Suite 1200 – LEED for Commercial Interiors

200 West Madison, Suite 1200
Chicago, IL

Opportunity

Transwestern’s Chicago headquarters sought LEED® certification for the design and construction of its new office. In order to obtain LEED® for Commercial Interiors, Transwestern worked closely with building owners as this certification cannot be pursued independently.

Solution

• Selected an existing office space that allowed for preservation of greenfields and natural habitats and resources.
• Purchased ENERGY STAR® rated products for over 90% of office equipment and appliances.
• Installed 1.0 gal per minute kitchen aerators within the office space.
• Switched to energy-efficient, low wattage LED light fixtures.
• Installed MERV13 filters into base building air handling units.
• Installed submetering equipment onto lighting system, controls and plug loads to measure and record energy use in the tenant space.

Results

• Increased ventilation rates 30% over ASHRAE 62.1-2007 requirements.
• Decreased potable water usage by 41%.
• Reduced lighting power loads more than 65% under the ASHRAE 90.1-2007 standard.

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