KleeLiving

The “KleeLiving” residential complex in Vienna-Liesing features a CO₂-optimized energy and building concept. Each apartment is equipped with a heating and cooling system using building component activation and geothermal energy via borehole heat exchangers. Photovoltaic panels installed on the roofs further increase energy efficiency, ensuring a completely fossil-free energy supply.

Completion

2023

Net floor area

16.250 m²

Client

ZBI Fondsmanagement GmbH

Developer
Architecture
Construction company
Stakeholder

Structural engineering: Dorr-Schober & Partner ZT GmbH
Energy design: ha-con GmbH
Building services engineering (MEP): Böhm Stadtbaumeister & Gebäudetechnik GmbH
Building physics: Allplan GmbH

Concrete supplier
Amount of concrete

15.200 m³

© ZAB
© ZAB

The “KleeLiving” residential complex comprises 265 rental apartments ranging from 47 to 97 m², characterized by compact layouts, generous open spaces, and high structural density combined with ample greenery. The newly developed district in Liesing offers excellent public transport connections, recreational areas, and nearby shopping and educational facilities, creating an urban yet nature-oriented living environment.

The energy concept combines circular economy principles with energy-efficient building technology. Electricity from 100 % renewable sources enables CO₂-free heating and cooling, with thermally activated reinforced concrete ceilings functioning as radiant heating elements. The components are designed as prefabricated semi-finished elements with integrated heating pipes, ensuring a high degree of prefabrication and optimized construction quality.

Building component activation allows for the efficient operation of heat pumps and resource-saving cooling without noise or heat emission to the surroundings. The system is based on a geothermal borehole field with 104 probes, which serves as both energy source and storage, and is regenerated using waste heat - a closed, energy-efficient cycle system.

A 75 kWp photovoltaic system supplies the building services with electricity and stores surplus energy in concrete building components to bridge periods of low environmental energy availability. The concept is complemented by an optimized building envelope, high insulation standards, and external shading elements that minimize solar heat gain during summer months.

With its integrated approach - linking renewable energy use, systemic energy storage, and serial construction methods - KleeLiving demonstrates how sustainable, resource-efficient housing can be realized within dense urban structures.