BS2 Zeleganz

Gallery BS2 Zeleganz 1
Gallery BS2 Zeleganz 1
June 2018
Headquarters 8952 Schlieren, Switzerland

BS2 Zeleganz - All-in-one energy system for emission-free buildings.

An all-in-one package based on a highly efficient heat pump with a groundsource heat exchanger for running an emission-free building. The solution is a single point of contact for consulting, planning, and installing the product.

The system allows a building to achieve maximal thermal autarchy and minimal electricity demand in winter. Its design streamlines the planning and implementation processes, and the heat pump's integrated control unit, coupled with a user-friendly interface app, enables easy and remote monitoring. Additional features like optimisation of on-site PV production or e-mobility can also be integrated to this unit. The efficiency achieved for heating, cooling, and supplying hot water are comparable to those of state-of-the art large-scale operations not normally attainable in smaller projects.

BS2: all-in-one energy system for emission-free buildings.

Key features

  • All-in-one package of emission-free buildings system.
  • Low Exergy heat-pump system with maximum efficiency in Winter, leading to minimal external energy demand.
  • Competitive LCC due to standardization of thermodynamically complex system
  • Up to 94% reduction of CO2 emissions compared to a building system running on fossil fuels.


  • Stable and competitive long-term costs

Categories of Application

Company Profile

Maturity Stage

  • Medium and large scale commercialization
  • Small scale commercialization
  • Initial market commercialization
  • Prototype testing in the real world
  • Prototype testing 1:1 in the lab

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Activity Region

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