The existing buildings currently have an energy efficiency rating of F. Outdated gas-fired unit heaters, uninsulated building components, and limited ventilation options result in high energy losses and rising operating costs. With the renovation, we are laying the foundation for a modern, future-proof living environment that combines comfort, efficiency, and sustainability.

‍

The measures:
The building envelope is being modernized using prefabricated façade modules according to ecoworks standards. The façade system comes factory-equipped with insulation, new windows, integrated ventilation systems, and electric blinds.

The roof is also being renovated: the old covering is being removed and replaced with a new trapezoidal sheet roof with rafter insulation. In addition, basement ceiling and flank insulation prevent energy loss downward.

The existing gas unit heaters are being removed and replaced with a central district heating supply. Hot water will be produced via thermal apartment stations, and decentralized ventilation units with heat recovery will ensure continuous fresh air and improved energy efficiency.

The technical building equipment (TGA) is also being renewed using a prefabricated, façade-integrated TGA module. In addition, the building entrances are being modernized, and new balcony towers are being added to enhance living comfort.

‍

The result:
Upon completion of the renovation, the final energy demand drops by approximately 68% — from 207 kWh/m²a to just 65 kWh/m²a. CO₂ emissions are reduced significantly from 198.2 t to 24.3 t CO₂eq per year. The buildings achieve energy efficiency class A and meet the KfW Efficiency House 55 standard.

‍