Caluwin

Name: Caluwin
Availability: InStock
Author: Saint-Gobain Group

Saint-Gobain Group

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About this app

Caluwin is an app for calculating window performance parameters according
to DIN EN ISO 10077 and DIN EN13947.

Key features:
• Calculation of window Uw values according to DIN EN ISO 10077 1
• Calculation of surface temperatures and condensation risk in the glass edge area
• Calculation of window energy savings for winter and summer conditions
• Window energy ratings for Switzerland, Denmark, France, and the United Kingdom
• Passive House efficiency assessment
• Swisspacer Air simulation, including lifetime effects and elevated transport scenarios

With Caluwin you can calculate potential energy savings by using Swisspacer.

Updated on

Sep 10, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.

No data shared with third parties
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No data collected
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What’s new

This tool is aimed to help manufacturers/developers, sellers of windows and window components, as well as planners and architects, energy consultants and building biologists with their work. It is intuitive to use and those building and renovating homes can also plan and optimize their windows with CALUWIN.

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