In a study of 60 new buildings, conducted by the Lawrence Berkeley National Laboratory (LBNL)
- 50% suffered controls problems
- 40% suffered HVAC problems
- 15% had missing equipment
- 25% of the economizers and VFDs didn’t function as designed
Imagine if this study were conducted for existing buildings. They would certainly be in worse shape due to aging HVAC systems and modifications to the building structure.
Source: eta.lbl.gov
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