Evaluating the factors that impact energy use intensity (EUI) in high performance buildings

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A recent study by Itzhak Maor, director of Smart Building Technologies, and Steve Snyder, energy services engineer, of Johnson Controls revealed that 82 percent of reviewed high performance buildings employed multiple HVAC system types or “hybrid” system solutions, indicating that integrated design practices are bringing together various HVAC technologies to achieve high performance.

Maor and Snyder reviewed 90 case studies of “high performing” buildings from ASHRAE’s High Performing Buildings (HPB) magazine and ASHRAE Technology awards, investigating relationships between the buildings’ total energy use intensity (EUI) values and factors such as climate zone, building type, LEED certification level, and HVAC system type. In addition, observations were made with respect to the frequency of occurrence of high performing buildings in each climate zone and the frequency of use of various HVAC system types in different building type applications.

Read the full results of the study, “Evaluation of Factors Impacting EUI from High Performance Building Case Studies” at High Performing Buildings.

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