More individuals gets symptoms which relates to the indoor climate or the building at the workplace. Indoor climate investigations are often multifactorial, symptoms can come to existence from building-related problems as well from psychic- and social problems. To deal with the problem a working method called the Previa-model was manufactured. The Previa-model builds on working with both building-related symptoms (BRS) and nonspecific building-related symptoms (NBRS) side by side as far as it goes. Furthermore, chart the individuals symptoms, demands on management and a cooperation between psychologists, work environment engineers, company doctors and nurses. The focus is on helping individuals decrease their anxiety and stress as much as possible. The purpose of this study was to examine how the Previa-model have facilitated indoor climate investigations. Which components in the Previa-model could decrease anxiety and stress. Also, how psychologists could help individuals who have NBRS. The study builds on interviews with one work environment engineer and three psychologists. Data was collected from assignments based on the Previa-model, one ongoing and three finished and result from a survey. The result showed that the application of the Previa-model led to good results in the investigations and customers were in general very pleased with the outcome. Sixteen components that could decrease anxiety and stress were found. Furthermore, could psychologists support individuals by dealing with stress, anxiety and emotional impingement. Indoor climate problems are often very complex and difficult to solve, but working with several investigations and actions at the same time makes it possible to succeed.