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

Hans Heggli AG – heizung24.ch in Rapperswil-Jona has been providing reliable heating and energy solutions for more than 60 years. The company offers complete heating services including planning, installation, maintenance and repair from a single source. Services include heat pumps, gas and wood heating systems, underfloor heating, radiators, solar energy solutions and smart home heating controls. With a strong focus on energy efficiency and sustainability, heizung24.ch creates future-proof heating concepts for residential and commercial customers.

Freundlich, professionell und kompetent. Was will man mehr? Sehr zu empfehlen!