Book excerpt: Each year more and more local and state municipalities require maintenance professionals to be licensed to operate boilers and their accessories. Skilled trades courses do a decent job providing an introduction to the field of boiler operations but many are deficient in preparing students or readers on what is essential to passing an boiler operator examination. This book has boiled down the crucial and necessary parts in layman terms so the reader can focus on what's most important; integrating the knowledge in a manner that will allow them to recall that information either in a written or oral form when needed. There is not a book on the market like this and it will definitely help the reader that applies themselves to adopting its principles.