Heating, Ventilation and Air-Conditioning (HVAC)systems are omnipresent in modern buildings. This book is an introduction to all those involved in the specification, design, manufacture, installation, operation or maintainance of these systems. The book explains: . The objectives to be achieved by a system in terms of environmental control. . The description of a system - including primary equipment, means of distribution, space and load determination, and operating strategy. . The basic function of components that form HVAC systems. . The layout and functioning of common HVAC systems, including all-air systems, air-water systems, and all-water systems. . The strategies for operating systems and their basic means of control. . Identifying the most suitable type of system for different types of application. * Air-conditioning is a major growth industry, this introduction to how systems operate and how to select, design and operate them effectively * Endorsed by, and developed with ASHRAE, the leading trade body and recognised technical experts * Provides a thorough introduction to how HVAC systems function in controlling temperature, air quality, and air circulation in a controlled space.