The Rachidia, an association acting for the preservation of musical heritage, is located in a sumptuous historic monument, Dar Daouletli. This building had increasingly become unhealthy due to moisture problems. A listed monument situated in the heart of the Medina of Tunis, it was built in the 17th century and is characterized by an architecture which employs refined materials and displays local, traditional features. The use of the classrooms in the Rachidia, where music classes are delivered to children, as well as the patio which hosts concerts, depends on weather conditions. Cold and heat which cause moisture problems affect the musical activities of this artistic space, hence the intervention of KLF. The project consisted in equipping the Rachidia with a temperature conditioning system which allows the heating and the cooling of different spaces. The procedure took place in 2014 in collaboration with a team of engineers and architects and has allowed for the monument to be functional throughout the year.