- rugpjūčio 30, 2016
The owners, the Keßler couple, switched its historic estate made of Bergisch quarry stones from oil to geothermal energy. The building, which is more than 100 years old, houses five families on a living area of 700 qm and is also used for commercial purposes. Large-scale renovations started in 2000 – new roof, insulating glazing, 12 cm insulation on exterior walls – and were finished in 2008 with the installation of the heat pump system. The high and continuously climbing costs for heating oil for the former oil heat were instrumental in the switch to reasonable environmental energy.