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WUFI® is a family of software products that allows realistic calculation of the transient coupled one- and twodimensional heat and moisture transport in walls and other multi-layer building components exposed to natural weather. WUFI® is an acronym for Wärme Und Feuchte Instationär—which, translated, means heat and moisture transiency. WUFI® software uses the latest findings regarding vapor diffusion and moisture transport in building materials. The software has been validated by detailed comparison with measurements obtained in the laboratory and on IBP’s outdoor testing field.

Component simulation and building simulation

The various versions of the WUFI® software family perform coupled heat and moisture calculations under local climate conditions and for materials, multilayer components, and even whole buildings. Through WUFI® simulation of heat and moisture transport, users can, while still in the planning phases, optimize designs and identify risks and problems.



The fundamentals required for practical application of heat and moisture transfer calculations and the application of WUFI® software for building physics investigations are presented in numerous publications by staff at the Fraunhofer Institute for Building Physics (IBP) and by other institutions. The numerous examples of applications that use WUFI®, together with many publications on the topic of hygrothermics, are located here.


Instruction manuals and handbooks

This link leads to numerous instruction manuals and handbooks for users who are just starting with WUFI®, as well for advanced users with specific questions.



The Fraunhofer Institute for Building Physics offers general workshops on WUFI® at regular intervals. There is one workshop for WUFI® beginners and for those with a general interest in WUFI®, and there is another workshop for existing users who want more advanced training. There are separate workshops that focus on WUFI® 2D, WUFI® Plus, and WUFI® Passive. Since WUFI® developers themselves teach the workshops, a high quality experience can be expected.



    WUFI® Pro workshop in London - Still places available!

    February 8, 2017

    150x100_News_SeminarzertifizierungThere are still some free places available for a WUFI® Pro workshop in London in March.

    Find more information here:


    Research projekt "Climate models" completed!

    December 6, 2016

    The higher the insulation level of a building component is the less heat is available for its drying. As a consequence of the better airtightness of the building envelope, in addition the indoor air humidity increases. Both together require also higher demands on the moisture protection of the building components. This is increasingly verified by means of a hygrothermal simulations like WUFI®. These methods need appropriate indoor and outdoor climate data. To close the existing gaps, as part of a research project the following topics were investigated


    Release of WUFI Pro® 6.0

    April 19, 2016

    750x140_News_WUFI-Pro-6The new version of our simulation software WUFI Pro® can now be obtained at the online shop. Version 6.0 shows many new features and improvements:


    WUFI® Plus and WUFI® Passive update

    December 7, 2015

    The new versions WUFI® Plus 3.0.3 and WUFI® Passive 3.0.3 have been released. Please find an overview of alterations and setup instructions in the update overview.

    Free-of-charge updates are listed on the WUFI® online shop in the section „my orders“. The displayed link allows you to download the respective latest version which can be update to for free. Please extract the file and install the software using your existing licence number (usually identified automatically). Earlier versions don't have to be uninstalled. Chargeable upgrades will be displayed at the online shop when you log in with your WUFI® account.


    Find answers in our new FAQ section

    November 4, 2015


    The FAQ section provides numerous answers to our most frequently asked questions – especially those relating to purchasing and getting started with WUFI®. There you will find, for example, extensive information on what WUFI® programs and licenses are available, what databases they use, how to purchase and pay for the software, and what the system requirements are.

    If you already use WUFI® and have specific questions about the software, there are a number of help sources available, such as instruction manuals, tutorials, and the WUFI® forum. An overview of these sources can be found under support.




Last Update: March 23, 2017 at 12:02