Caleffi’s 12th edition of idronics: Hydronic Fundamentals is a special edition of the complimentary design journal for hydronic professionals. Unlike previous editions, which have focused primarily on one topic, this issue broadly describes the principles of hydronic systems. These foundations are the fundamentals of good system design and proper installation. When clearly understood and applied, they allow designers to create systems that deliver superior comfort, energy efficiency and long-term reliability.Hydronics fundamentals book