International Series in Heating and Ventilation, Volume 15: Automatic Controls for Heating and Air Conditioning: Principles and Applications details the relationship between theory and practice in implementing an automated system for thermal regulation. The title first deals with the sensors and methods for quantifying the two variables mainly of interest in building services systems, temperature and humidity. Next, the selection covers the application of controls to a number of specific areas of building environmental services. The text also discusses controller mechanisms and circuits, along with controller characteristics. The fifth chapter deals with basic theory of linear automatic control, while the sixth chapter talks about the analysis of non-linear systems. The book will be of great interest to engineers and technicians who deal with cooling and heating systems.