Advances in personal computer control and sensor technology are leading the advances in building controls as we enter the 21st century. Pushing the technology are potentially high reductions in operating costs from the increased operational efficiency. This book examines how advances in distributed technology will be used in commercial systems. Topics include the full scope of current and emerging HVAC control technologies, covering: personal computer-based systems; expert systems; fibre optic infrared technologies, wireless communication; self-optimizing software sensors; micro-technology; distributed direct digital control; control bus techniques; and more.