The office building of the company C+P has been modified based on the new C+P climate concept and the „Biophilic Design“. The climate concept is based on the climate wall, developed by Fraunhofer IBP. Due to the cooled water film, the air in the building is both cooled and dehumidified. Thus, it also ensures a pleasant indoor climate even under humid and warm weather conditions. The air conditioning works efficiently and allows in summer up to 17% and winter up to 24% energy savings. The needed cooling area as well as the optimal allocation were calculated using the building simulation software WUFI® Plus.