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How does an average, aging society deal with the challenges of climatic and demographic change? In reality, the effects vary regionally. This paper explores how an urban society responds to the challenge of increasing summer temperatures using the example of Aachen, a city in North Rhine-Westphalia, Germany. The research started with the perception of heat in the working and living environment of older and thus particularly vulnerable residents. As actors of urban development actively influence living and working conditions, their projected need for action is compared to the results of a survey of the residents. It clearly showed that demographic, socio-cultural, spatial, and construction factors affected the perceptions of the residents. Climate change awareness and possible adaptation measures usually exist, but, in general, initiatives are only taken if the effect is noticed by an individual. Although not all residents and stakeholders of Aachen perceived heat waves as a problem, a variety of adaptation strategies could be established. They ranged from aspired lifestyle over individual and short-term behavioral changes to urban planning, architectural and technical measures. These measures can be used to raise awareness of climate issues and implement adaptation strategies. Thereby, all stakeholders and residents, employers and employees, homeowners and tenants, planners, architects and developers, investors and users, etc., are asked to take responsibility within their field. English title: Adjustment through Acceptance – The Approach of Local Actors to Summer Heat Waves [ABSTRACT FROM AUTHOR]