This book presents an overview of conclusions and future works in new research and design parameters of Spanish indoor ambiences. These conclusions are based on real data conducted at the Department of Energy at the University of A Coruña. This research involved a set of ambiences such as flats, schools, libraries and ships located in the area of A Coruña, Spain. The purpose of these investigations was to determine the correlation between indoor ambiences and comfort, energy saving, work risk, health and material conservancy.