Gutenswil School Center in Switzerland has taken a decisive step toward an energy-independent future. Rather than repairing its 25-year-old, failure-prone biomass boiler, the school opted for a complete heating system renovation. At the heart of the new setup is the KRONOTERM ADAPT MAX – a powerful air-to-water heat pump whose exceptional efficiency allows it to run entirely on solar energy produced by the 432 m² rooftop photovoltaic system. Thanks to this combination, the school now heats CO₂-neutral, fully self-sufficiently, and almost silently.