Contributor(s):Author: Dan HolohanI wrote this book to describe the beautiful workings of hydronic heating systems and I tried to use words that made the subject spring to life in a visual way. Its been one of my best-selling books for years. I kept the drawings simple. Even if youve never worked with hydronics before, youll be able to follow these drawings. The first part deals with boiler-room piping and explains how you can put the discoveries of the late, great Gil Carlson to work for you. If you pipe Gils way, youll save time, money and never again have to bleed radiators. Thousands of installers have reported great success by following the principles in the first part of this book. I wish I could take credit but the genius was Gil Carlsons. I just did my best to tell his story in plain English. The second half of the book takes the Pumping Away boiler-room piping design and applies it to a delicious menu of piping options. This is a book that youll refer to again and again. It will save you time and money. And I guarantee that. - Dan Holohan