In the research project "AIrFoil" an international consortium works on improving Air Source Heat Pumps by leveraging a new design concept involving homogenization of the airflow before the heat exchanger. This produces • less noise, and in turn • the ability to increase the ventilator otational speed, leading to • a more efficient heat transition at the heat exchanger of the air source heat pump. How much the concept improves low noise or efficiency can be chosen by the user.