Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. This book contains an overview of air conditioning, comfort applications, process applications, humidity control, health issues, automobiles, heat pumps, HVAC, and seawater air conditioning. Project Webster represents a new publishing paradigm, allowing disparate content sources to be curated into cohesive, relevant, and informative books. To date, this content has been curated from Wikipedia articles and images under Creative Commons licensing, although as Project Webster continues to increase in scope and dimension, more licensed and public domain content is being added. We believe books such as this represent a new and exciting lexicon in the sharing of human knowledge.