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Commercial building assessments performed across North America show that most buildings suffer from two or more basic comfort or energy efficiency flaws; conditions that are likely to generate comfort complaints exist in over 75 percent of buildings surveyed; and overventilation is the most common cause of excessive HVAC-related energy use.
Overall, 96 percent of buildings analyzed failed to meet industry guidelines in at least one of five fundamental elements of building comfort and energy efficiency: temperatures that are too warm, too cool, fluctuate excessively, fail to match the set point, and evidence of overventilation.
“In addition to quantifying the prevalence and nature of commercial building performance issues, the AirAdvice ‘State of Building Performance Report 2007’ summarizes the significant economic costs of these issues,” said Gary Frayn, AirAdvice vice president of commercial development. “This report delivers critical information and insight to building owners, operations and facilities managers, as well as HVAC industry professionals.”
According to the survey, over 80 percent of buildings surveyed showed evidence of overventilation; less than one-half of buildings surveyed maintained temperatures within 2°F of the specified set point; one in five buildings surveyed experienced actual temperatures that were more than 5° from the specified set point; and nearly one-quarter of buildings surveyed were found to have inefficient temperature control, with the temperature in the space significantly higher than the heating set point or lower than the cooling set point.
The report also summarizes data and insight from several industry studies, providing information about building owners’ perspectives on energy savings, comfort and energy performance of LEED®-certified projects, and quantitative data detailing the positive effect on productivity from improved thermal comfort.
For more information, visit www.airadvice.com.
Publication date: 11/12/2007