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Last download on: Sat Mar 25, 2017 02:51:44 PM
Building owners spend more on complex building systems than ever before, yet many find they are not getting the performance they expect. A 1994 study of 60 commercial buildings found that more than half suffered from control problems. In addition, 40% had problems with heating, ventilation and air-conditioning (HVAC) equipment and one-third had sensors that were not operating properly.1 An astonishing 15% of the buildings studied were actually missing specified equipment. And approximately one-quarter of them had energy management control systems, economizers, and/or variable speed drives that did not run properly. Problems also frequently occur on the envelope, structural and electrical systems of many new buildings.
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