In our project at Fleesensee, where three boreholes were each sunk to a depth of approx. 126 m, we use geothermal energy. The drilling rig looks enormous - but after completion there is nothing left to see of the boreholes. Another advantage is that the Weishaupt heat pump used is used for cooling in the summer. Thus, the sustainably and plastic-free constructed wooden house with its thatched roofing is pleasantly tempered on hot days. We are looking forward to the first summer!