The aim of this project is to show examples that can help prevent the demolition of concrete buildings with low ceiling height. In many cases, concrete buildings with low ceiling height are demolished, this because the technical installations build too much down from the ceiling. That is why ventilation is the main focus of the thesis. The aim of the project is to show examples that can be used in all types of buildings. The examples show several different ways in which the ventilation ducts can be integrated into the room design, but also appear playful and creative.