TheLife of an HVAC/R Technician contains a detailed explanation of troubleshooting techniques and answers to many question of how and why systems have failed. This book will save you precious time, money and accelerate your learning curve dramatically. It will include everything from techniques and stories to safety tips and unit sizing. Remarkably detailed� this service manual is especially helpful for first-time service technicians just beginning in an expanding field of refrigeration. --12 year lead technician Scott Pointon Schaub's 60 years in the business expands on the decades of changes from belt driven compressors to the age of computerization. --Dick Weirauch-45 Year service veteran of United Refrigeration It is about time that someone came out with a handbook that the any service mechanic can easily carry and use on an everyday basis. --Charles Gardener-30 year HVAC/R service veteran