The increasing energy demands of contemporary society remain unmet, resulting in a growing negative impact on the environment. It is noteworthy that people typically spend a considerable amount of time indoors, where a substantial quantity of energy is consumed and pollution is generated. In this regard, experts in the field of interior design must prioritize energy conservation and environmental protection. This can be accomplished by implementing various techniques, such as using energy-efficient technologies based on renewable resources, incorporating eco-friendly design elements, and adopting sustainable construction and daily practices.The primary objective of this book is to educate individuals and organizations dedicated to environmental protection about the necessity of and approaches to reducing energy usage and environmental pollution in indoor spaces. Moreover, it provides practical advice for individuals to conserve energy and minimize indoor pollution. Students, specifically, can benefit from this book by gaining a deeper comprehension of their role in safeguarding the environment.