Book excerpt: Starting with the essential fundamentals, this book takes a straight-forward approach to repairing and maintaining small refrigeration equipment, commercial equipment and residential HVAC-R systems. Numerous troubleshooting problems offer readers hands-on opportunity to apply knowledge utilizing tips and tricks from experienced professionals. Contains numerous troubleshooting charts from well known manufacturers such as Smokemaster and Trane. Table of Contents: Section One: Refrigeration Fundamentals Section Two: Electrical Fundamentals Section Three: Tools, Equipment and Meters for HVAC-R Servicing Section Four: HVAC-R Equipment