About
Founded in 2015, s3 GmbH is a limited company headquartered in Dübendorf, Switzerland with approximately 11-50 employees specializing in Solar, Other.
s3 GmbH is a Swiss engineering and consulting firm founded in 2015 as a spin-off of ETH Zürich. It develops, optimises and compares energy concepts for buildings, covering heating replacement, heat pumps, photovoltaics, building envelope optimisation, life cycle assessment and operational optimisation. The company uses its eCycle software for building energy calculations. It also offers legionella testing under SVGW W3/E4, private control services for building permits, and energy verification. Its sister companies within the HS3 group provide heating installation, electrical services and EV charging infrastructure. The company operates offices in Dübendorf, Horgen and Schlieren.
Headquarters
Founded
Employees
Company type
Focus areas
Products & services
Business models
Value chain
Service areas (2)
Energy concepts and sustainability strategies
Energy concepts, variant comparisons, heating replacement planning and PV planning for residential, industrial and commercial buildings.
Drinking water hygiene and legionella testing
Legionella testing and drinking water self-inspection according to SVGW W3/E4.
Locations
Headquarters
Zürichstrasse 45, 8600, Dübendorf, Switzerland
Operating locations (2)
- Spätzstrasse 33, Horgen, Switzerland
- Grabenstrasse 1, Schlieren, Switzerland
Service regions
Projects
4Gewerbehaus Feldbach
Renovation and commercial conversion of a former greenhouse with an air/water heat pump for heating and cooling and a photovoltaic system, with the energy concept planned and executed by s3 GmbH.
Heizungsersatz Siedlung Oberglatt
Comparison of heat generation variants followed by a functional tender for a new heating system in a centrally heated housing estate.
Denkmalgeschütztes Mehrfamilienhaus Nürensdorf
Heating-system variant comparison and replacement with a ground-source heat pump in a listed multi-family building.
Siedlung Klee Lüftungsstudie
Comparative study of controlled residential ventilation versus manual window ventilation in the Klee housing estate.
Credentials & affiliations
Certifications
Befugte Private Kontrolleurin (Wärmedämmung, Heizung, Klima/Lüftung, Schutz vor Lärm)
Awards
Toplehrbetrieb Gebäudetechnik
Industry memberships
Partnerships
Scandens, Omneo AG, Hauser & Schwerzmann Haustechnik AG, MyClimate
People
Management & team (2)
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