WINISO®
WINISO® – Expert software for standards compliant heat flow and thermal bridge calculations in window and facade constructions, available for both 2D and 3D applications.
Why WINISO®?
Certified Software
Certified and tested by independent testing institutes
Internationally Recognized
Results generated by our software are internationally recognized
Easy to Use
Extremely user-friendly and intuitive to use
Always Up to Date
Regular updates and solutions that are always up to date
Partnerships
Strong partnerships with Bundesverband Flachglas, VFF, and Metall und Mehr.
Customer Satisfaction
A reliable partner for lasting customer satisfaction.
Validated
Validated for calculations in accordance with EN ISO 10077-2:2017-07 and EN ISO 10211-2:2017-07.
Professional Calculation
Uf, Ψ, thermal bridges, isotherms, fRsi, and Ufr, Ueg, and Ucg values
Powerful Features
For thermal calculations of windows and facades
WINISO®
WINISO® is the leading building physics software for the thermal calculation of windows, facades, and thermal bridges. It combines automated CAD import with precise FEM simulations in accordance with current European and international standards, such as EN ISO 10077-2.
The software quickly calculates heat flows, isotherms, Uf values, and psi values, while reliably assessing the risk of mould and condensation. In addition to conventional 2D calculations, WINISO® also provides component-based 3D simulation of complex point thermal bridges in accordance with EN ISO 10211.
WINISO® – Online-Viewer
Use the WINISO® Online Viewer directly in your browser without any local installation. The viewer allows you to easily view and present WINISO projects, calculation results, and models. The desktop version is still required for editing and performing calculations.
Features
WINISO® supports the thermal analysis of building components, window profiles, and facade structures in 2D and 3D. FEM simulations enable the precise calculation and clear visualization of heat flows, temperature fields, isotherms, and relevant values such as Uf, psi, chi, and fRsi.
CAD import, automated modeling, and standards-compliant calculation methods reduce the workload and significantly simplify evaluation and documentation for expert reports, testing, and customer presentations. Completed projects can also be viewed and presented directly in a browser using the WINISO® Online Viewer.
Thermal FEM Simulation
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Calculation of heat flows, isotherms, and temperature fields in 2D and 3D. This enables reliable analysis of thermal weak points, thermal bridges, and critical junction details.
Automatic Parameters
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WINISO® calculates key building physics values such as Uf, ψ, χ, and fRsi directly from the model. This makes evaluations faster, more traceable, and easier to document.
CAD Workflow
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DWG, DXF, and STEP files can be imported and prepared for calculation. Automatic error correction, material assignment, and cavity filling reduce the need for manual rework.
Calculation in Accordance with Standards
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The calculations are based on relevant standards such as EN ISO 10077-2, EN ISO 10211, EN ISO 6946, and EN 673. This makes WINISO® suitable for review-ready calculations, expert reports, and technical documentation.
Moisture and Mold Analysis
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In addition to heat losses, risks associated with condensation, moisture, and mold can also be assessed. Critical areas are visually highlighted and can be identified at an early stage.
Online Viewer
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With the WINISO® Online Viewer, completed calculations can be viewed and presented directly in the browser. The viewer is intended solely for viewing and presentation, not for editing or performing calculations.
Sample Reports & Use Cases
WINISO® supports a wide range of thermal calculations for windows, facades, installation situations, and component junctions. The sample reports illustrate typical applications, ranging from Uf and ψ value calculations to moisture analysis and standards-compliant documentation for planning, testing, and verification.
PVC Windows: Uf and ψg According to EN ISO 10077-2
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Calculation of the frame U-value (Uf) and the glazing-edge linear thermal transmittance (ψg) in accordance with EN ISO 10077-2 for a PVC window.
Aluminum Windows: In accordance with EN ISO 10077-2
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Calculation of the frame U-value (Uf) in accordance with EN ISO 10077-2 for an aluminum window profile.
Window Installation: ψ and fRsi Values
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Calculation of the installation ψ-value and the temperature factor fRsi in accordance with Supplement 2 to DIN 4108.
Window Installation: Moisture
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Window: U-value calculation according to ISO 15099
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Calculation of the Ufr, Ueg, and Ucg values for the Uw zone model in accordance with ISO 15099. The boundary conditions are defined according to NFRC requirements.
Import & Clean Up CAD Data
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WINISO® 3D imports CAD data in DWG, DXF, and STEP formats. Integrated CAD preparation tools ensure a seamless transition from CAD geometry to the FEM.
Window: Glazing bars in the space between the panes
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Thermal bridge calculation for a glazing bar between the panes in accordance with ISO 10211.
Window: Overlapping sash with double glazing
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Automatic calculation of the Uf value for a sash profile with two integrated glazing units.
Underground Parking Garage Ceiling: Free of Condensation
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Verification that the connection beneath an underground parking garage ceiling is free from condensation in accordance with DIN 4108, Supplement 2.
WINISO® PRODUCT FAMILY
WINISO® 2D 15099
Precise 2D FEM simulation for windows, facades, and thermal bridges in accordance with ISO 15099 and NFRC 100
Other Software vs. WINISO®
Function
Traditional Tools
Manual Tracing
Strictly limited to 2D
Not Possible or Based on Estimates
Local Access Only
No Independent Certification
WINISO®
Automatic CAD Cleanup & Cavity Filling
Integrated 2D and 3D in a Single Interface
Precise calculation via 3D simulation (X-value)
Cloud Based Online Viewer
Certified by ift Rosenheim and Compliant with Relevant Standards
Partners & Clients
Customer Testimonials
“Thanks to the software’s structured and professional design, we were able to perform complex calculations with WINISO® right away with minimal effort.”
Ensinger GmbH
Contact:
Sven Rhode – info.de@ensingerplastics.com
Ensinger GmbH was founded in 1996 and processes engineering plastics into semi-finished products, finished parts, profiles, and compounds. The headquarters of this internationally active company is located in Nufringen, Baden-Württemberg.
“Interpane Glasgesellschaft mbH has been a loyal customer of Sommer Informatik GmbH for many years. After just a short training period, we were able to use WINISO® quickly and effectively for our calculations, which is why we highly recommend this tool.”
Interpane Glasgesellschaft mbH
Interpane Glas Industrie AG is a German flat glass manufacturer headquartered in Lauenförde.
The company manufactures glazing products at ten locations in Germany, Austria, and France.
“We are very impressed with the WINISO® software. Among other things, its high accuracy and speed in performing calculations are outstanding.”
Hörmann KG
Contact:
Stephan Ongsiek – info@hoermann.de
Founded in 1935, the Hörmann Group is Europe’s leading supplier of doors and gates, which are developed and manufactured at 27 specialized plants in Europe, North America, and Asia.
“In our day-to-day thermal simulations of windows and facades, glass calculations are just an unpopular, secondary necessity. With WINISO®, however, this can be handled quickly and cost-effectively. That’s why we really enjoy working with WINISO®.”
Bauwerk Engineering Firm
Contact:
Mr. Deckert – info@waermeschutz.cc
The engineering firm has been in business since 1998 and offers services in the fields of building physics and window technology.
Frequently Asked Questions
Which calculation standards are supported by WINISO®?
WINISO® supports calculations in accordance with the following standards:
- EN ISO 10077-2
- EN 673
- EN ISO 6946
- ISO 15099
Which materials are available in WINISO®?
WINISO® includes a wide range of material data and boundary conditions. The material database can also be customized to meet specific requirements.
Is it possible to calculate the Ucw value using WINISO®?
WINISO® can calculate all required detailed values for a facade, including U-values for profiles, psi values for glazing edges, all-glass corners, and mullion-transom connections, as well as the isotherms of the individual connections.
These values can then be combined based on their respective areas and lengths to calculate the Ucw value for the entire facade. This final calculation is usually performed using Excel or other suitable tools.
How can the proof of equivalence for the example shown be calculated in accordance with DIN 4108, Supplement 2?
The mathematical equivalence verification is performed using the calculated psi and fRsi values. The calculations are based on EN ISO 10077-2 in conjunction with EN ISO 10211. The fRsi value is determined in accordance with DIN 4108-2.
Is it possible to use WINISO® to model the temperature in the windows caused by solar radiation?
Yes. In WINISO®, absorbed solar radiation can be defined as “surface power” in W/m² on the surface of a material using an edge boundary condition.