This paper presents results of an evaluation of workplace occupant satisfaction in 16 office buildings in Germany. They were obtained in field surveys by means of a questionnaire and accompanying measurements in connection with an analysis of the architecture and the energy concept of the buildings. This paper mainly focuses on thermal comfort -in particular on the satisfaction of perceived room temperatures and its influencing factors such as measured daily room temperatures, indoor air

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... , and humidity. Differences between winter and summer opinions and between the surveyed buildings have been analysed. This paper also introduces a method that facilitates evaluating the potential of optimising building operation by means of occupant surveys and its relation to the general satisfaction within the workplace. In order to rank different satisfaction parameters for a more straight-forward building operation assessment, the weighted importance of every satisfaction parameter was calculated in relationship to the general acceptance of the workplace. In this case the satisfaction with the room temperature was evaluated.