SEMCO’s 3fficiency™ wins a Top Ten Green Building Product Award from BuildingGreen

BOSTON- SEMCO’s 3fficiency™ system was recognized as one of the Top 10 Green Building Products for 2018 by BuildingGreen at the annual Greenbuild Expo.

BuildingGreen, an unbiased resource for sustainable building strategies, has been recognizing products that promote green design and architecture through its Top 10 Awards since 2001. The selections are announced at the Greenbuild Expo, the world’s largest conference focused on green building practices.

3fficiency is the HVAC industry’s first total indoor air quality (IAQ) system approach to chilled beam design and it surpasses the AHSRAE 90.1 energy standard by up to 30 percent.

“BuildingGreen has long recognized the energy and space-saving benefits of active chilled beams, but they could be a challenge to specify due to potential problems with humidity and comfort,” Brent Ehrlich, Products and Materials specialist at BuildingGreen, said. “By combining SEMCO’s active chilled beams, Neuton control module, and Pinnacle dedicated outdoor air system into one system, SEMCO’s 3fficiency system provides critical humidity control and the ability to heat and cool different zones in a package that is easier to install and commission."

Since 3fficiency uses water rather than refrigerant, many restrictions and concerns regarding refrigerant usage can be avoided, including ANSI/ASHRAE 15, Safety Standard for Refrigeration Systems, ANSI/ASHRAE 34, Designation and Safety Classification of Refrigerants and the Clean Air Act, which is gradually phasing out the use of many refrigerants by 2020.

Additionally, the True 3Å energy recovery wheel technology, used inside the Pinnacle DOAS, has saved an estimated 565 trillion BTUs and reduced carbon emissions by more than 32-million tons over the past 30 years. The True 3Å desiccant is a key contributor to the building’s IAQ, allowing less than .045% contaminant transfer into the supply airstream according to independent testing.

The first 3fficiency application saved the retrofitted Robert D. Campbell Junior High School, Winchester, Ky., $147,000 in labor installation costs over another technology considered for the project – variable refrigerant flow (VRF). The circa 1970’s building is also cutting energy costs by an estimated $33,000 annually versus the school's former conventional unit ventilator system, according to the retrofit’s performance contractor.

For more information on 3fficiency and its components, please visit or call 1-573-443-1481, visit, or email:

About SEMCO: Since its founding in 1963 as a sheet metal fabrication company with five employees, SEMCO has built a reputation as a worldwide product innovator in the science of air movement, noise abatement, energy efficiency and indoor air quality with more than 200 employees and more than 200 manufacturer's representatives. Major product lines include spiral metal HVAC duct, energy recovery equipment, chilled beams, and acoustics equipment. SEMCO is a FläktGroup brand company based in Columbia, Mo. SEMCO operates two manufacturing facilities in Arkansas and one in Virginia. SEMCO also operates an ASHRAE 84-compliant research and development facility dedicated to the innovation of new products for the 21st Century and beyond. For more information, please visit; email; or call 1-573-443-1481.

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