This book provides a concise overview of the most important technical relationships in the field of heating technology. It serves as a compact reference work to gain initial insights as well as a balanced understanding of the subject area. In addition to an introduction to the fundamentals of heat distribution and physiology, as well as thermal comfort, the areas of heat transfer, heat distribution, and heat generation are explained in detail. Chapters on hydraulics, control technology, and energy balancing follow, supplemented by a description of numerical simulation methods for heating systems. An appendix with selected complex examples completes the discussion.