Venlig Bolig Plus in Frederiksberg has won the award for Housing Construction of the Year 2019. The building consists of 3 clusters of apartments where either 2 students or 2 refugees live together in an apartment. The students will act as mentors for the refugees living in the Friendly Homes.

Each apartment is 33 square metres and consists of a shared kitchen/living room and bathroom as well as two small individual rooms. The building is designed according to the concept of ‘small living’, which places high demands on the utilisation of the square metres. DUKA One is a brilliant solution here, as it does not require pipework but is installed in the outer wall, freeing up important space in the apartments. In the future, apartment heating costs are also kept down as DUKA One units utilise the heat that is already in the apartments. DUKA One ventilates constantly in cycles of 70 seconds. First, used air is extracted for 70 seconds and the heat is stored in the ceramic core. After 70 seconds, the unit reverses direction and blows in fresh air that is heated by the ceramic core.

In the apartments, a DUKA One S6 is installed in each room and a DUKA One S6B in the bathroom. DUKA One S6B is specially developed for wet rooms, where the unit's two motors alternately suck out and blow in for 70 seconds, after which the direction is changed. During extraction, the heat is recycled. The two motors ensure that an even pressure is maintained in the bathroom. If moisture is present, both motors will extract air until the moisture level is below the set limit again.

The structure of the building encourages a sense of community with roof terraces in each cluster and common rooms on the ground floor. These common areas are also ventilated with DUKA One units.

The clusters are constructed from prefabricated modules that can be easily prepared for the DUKA One units at the factory, where the holes for the ceramic core are pre-drilled, making final assembly on site easy.

Housing in Copenhagen - and especially in Frederiksberg - is often expensive, so it has been important to keep construction costs and thus also rents down. The modular construction and DUKA One units have helped to ensure this. Here, a resident has to pay just under DKK 3,000 in rent per month.