Making Building Physics Accessible

We believe that powerful building performance simulation should be available to every architect and engineer, not just specialized consultants.

💻

Coding

Building powerful simulation tools that everyone can use, with intuitive interfaces and comprehensive documentation.

☁️

Computing

Leveraging cloud infrastructure to deliver fast, accurate simulations without expensive local hardware.

🤝

Consulting

Providing expert guidance and custom integration services to help you get the most from our tools.

Our Story

C3RRO was founded by building physics professionals who were frustrated with the complexity and cost of existing simulation tools. We saw talented architects and engineers avoiding energy modeling because the software was too difficult to learn or too expensive to license.

We partnered with the Fraunhofer Institute for Building Physics to bring WUFI® technology to the cloud, making it accessible through modern web applications. Our mission is to democratize building physics simulation, so that sustainable design becomes the default, not the exception.

Today, C3RRO tools are used by professionals in over 30 countries to design energy-efficient buildings, achieve Passive House certification, and solve complex moisture problems.

Our Values

Accessibility

Powerful tools shouldn't require a PhD to use

Accuracy

Built on validated WUFI® physics engines

Transparency

Clear pricing, open communication, no hidden fees

Sustainability

Helping build a more energy-efficient future

Technology Partners

WUFI

Fraunhofer Institute for Building Physics

Our simulation engines are powered by WUFI® (Wärme Und Feuchte Instationär), the world's leading software for hygrothermal analysis, developed by the Fraunhofer Institute for Building Physics in Germany.

WUFI® is validated against thousands of real-world measurements and is trusted by building professionals worldwide for accurate moisture and energy calculations.