An Environmental Consultant is a professional who can identify the causes of poor indoor air quality – even when problems seem vague or unrelated to visible causes. The Environmental Consultant is trained to see a building the way a general practitioner sees the body of his patient – as an organic whole with dozens of inter-related systems contributing to overall health. In order to diagnose the patient properly, the Consultant must be able to gather and interpret data from various systems operating in a building. His experience and training must therefore come from a wide range of disciplines.