The book "Smart Water Heating" by Julian Bruno Bruhn provides a comprehensive analysis of the intelligent control of electric water heaters within demand management programs. It highlights the challenges and opportunities associated with the high energy consumption of electric water heaters and presents an algorithm that enables cost-efficient use of these devices. Through intelligent control, households can not only reduce their energy costs by up to 21% but also maintain the usual comfort and health of the users. The results of the simulations demonstrate that the implementation of the algorithm in locally embedded devices is economically viable and could have broad applications in the current electricity tariff environment. This specialized book is aimed at professionals and interested parties in the energy sector and offers valuable insights into modern technologies for optimizing energy consumption.