The "Breidenbach," as the industry refers to this standard textbook for mechatronics in refrigeration technology and refrigeration system master builders, provides a very clear introduction to the field of refrigeration technology with numerous illustrations, examples, and exercises. Due to its methodically well-thought-out structure, the book is highly suitable for independent learning. The thoroughly commented solutions to the exercises help to better understand the connections and deepen the learning content. The 7th edition of Volume 1 has been updated in line with technical innovations and adapted to the latest regulations. Volumes 1 and 2 together cover the entire curriculum for vocational training as a mechatronics technician in refrigeration technology and can be used in both school-based and company-based training and further education.