De Dijlemolens is a residential complex located in Leuven along the Dijle. The old mill building was renovated in 1985 into a residential complex with 35 apartments and a dozen commercial spaces. During the renovation, external wall insulation was installed so that the building has a limited heat demand. Currently the building is heated via an outdated central gas boiler. For domestic hot water, each apartment has a separate electric boiler.

This project aims to renew the heating system of the building and make it more sustainable. Due to its location on the Dijle, the building is ideally suited for aquathermal heating. EXTRAQT together with the City of Leuven are assisting the VME with the renovation of the heating system whereby the reduction of CO2 emissions is central. The basic heat demand will be provided by a heat pump linked to the river Dijle; for the peak demand the gas boiler will be used. The installation is an example project for aquathermal energy in residences and is supported by the Flemish Government – Department of Environment.