Sustech, as an independent engineering firm for energy and building technology, offers all services from energy consulting to planning and monitoring. We support builders in residential areas as well as in administration, schools, nursing homes, gastronomy, industry, and more. Our primary goal is to optimize sustainability and comfort. • GEAK • Energy Consulting • Building Physics • HVAC Planning • Fossil-Free Heating • Photovoltaic Planning

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Herr Müller war am 29.11.2021 bei uns. Wir haben Herr Müller schon zum dritten Mal angerufen, nachdem er bei seinem ersten Besuch bei uns schon ausgzeichnete Arbeit geleistet hat! Herr Müller ist ein Profi und macht nicht mehr als nötig. Er hat uns seine Arbeitschritte gut verständlich erklärt, bevor er den Schaden reparierte. Herr Müller ist sehr freundlich, arbeitet sehr sauber und effizient. Wir sind sehr froh, dass wir einen so guten Fachmann kennen! H.U. Kaltbrunner Uster

As a holistic partner for all concerns and construction projects relating to building technology, we implement high-quality and optimized solutions in accordance with the wishes and goals of our customers. From simple heating system replacements to solar systems to complex installations, we are happy to assist you. Our solutions in the areas of heating, ventilation, air conditioning and solar collectors / photovoltaics are created in close cooperation with our sister companies (planning & engineering - s3 GmbH , execution - HSH AG ) and in constant contact with the client. This enables us to accompany you from decision-making through installation to system optimization and maintenance. Our transparent approach creates systems that are not only sustainable, but also mesh seamlessly and are in harmony with the needs of the users and residents of the building.