Facts101 is your complete guide to Electricity, Electronics, and Control Systems for HVAC. In this book, you will learn topics such as Electrical Circuits, Meters and Tools for HVAC, Symbols and Diagrams for HVAC and Refrigeration Systems, and Reading and Writing Schematic and Wiring Diagrams plus much more. With key features such as key terms, people and places, Facts101 gives you all the information you need to prepare for your next exam. Our practice tests are specific to the textbook and we have designed tools to make the most of your limited study time.