HVAC systems in mid- to large-sized commercial buildings have increased in complexity steadily over the last 15 years. With the introduction of DDC controls and other building automation functions, even the most straightforward VAV systems are a compilation of components from multiple manufacturers, built by multiple contractors, that must be programmed and sequenced to work together seamlessly as intended.
[…] Considering the ultimate objective for HVAC systems — keeping building occupants safe, healthy and comfortable, while using the least amount of energy — it is no wonder HVAC has become so complex.
Beginning in 2013, […] the complexity of HVAC systems will increase yet again. […] new buildings and major renovations will be required to be designed and built with new technologies including demand-controlled ventilation, energy-recovery ventilation, daylight-harvesting controls, and economizer cycles for even small comfort cooling applications. […]
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