The book "Heat and Gas Supply, Ventilation and Air Conditioning" by E. In. Trukhana is an indispensable source of knowledge for anyone interested in modern heating, gas supply, ventilation and air conditioning systems. With the rapid development of technologies and increasing requirements for quality of life, this publication becomes relevant for both specialists in the field of engineering systems and students studying in the relevant fields. In his book, Truhan is deeply immersed in the key aspects of the design and operation of heat and gas supply and ventilation systems. It considers not only theoretical foundations, but also practical recommendations, which makes the material accessible and understandable to a wide audience. Readers will be able to learn about modern methods of calculating heat loads, the features of the choice of equipment, as well as the principles of operation of various systems, which will allow them to better navigate complex issues related to climate systems. The book will be of particular interest to engineers, designers, as well as students of technical universities studying disciplines related to heat engineering and ventilation. It will be a useful tool for those who want to deepen their knowledge in the field of energy saving and improving the efficiency of heating and air conditioning systems. In addition, specialists working in the field of housing and construction will find in it up-to-date information about current trends and technologies that will help them in their professional activities. The topics raised in the book cover a wide range of issues, including environmental aspects, energy conservation, and the impact of climate systems on human health. Truhan emphasizes the importance of proper design and choice of equipment, which in turn directly affects comfort and safety in the premises. In the face of global climate change and increasing energy consumption, resource efficiency issues are becoming particularly urgent, and this book offers readers valuable solutions and recommendations. The author's style is distinguished by clarity and logical presentation, which makes complex technical aspects accessible for understanding. E. In. Truhan is an experienced specialist in his field, and his knowledge is supported by many years of practice. In previous works, he also touched on topics related to energy efficiency and new technologies in the field of heating and ventilation, which confirms his authority and deep understanding of the subject. The book “Heat and Gas Supply, Ventilation and Air Conditioning” will be an excellent addition to the library of everyone who seeks to be aware of the latest achievements in the field of engineering systems. It will not only provide readers with the necessary knowledge, but also inspire the application of the information received in practical activities. If you are looking for a reliable source of information on heating, ventilation and air conditioning, this publication is your ideal choice. Do not miss the opportunity to expand your horizons and deepen your knowledge in the field of heat and gas supply and climate technologies . Book E. In. Trukhana is the key to understanding the complex processes that affect comfort and safety in our environment.