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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.



    20 years of WUFI® – 20% sale at the WUFI® online shop

    October 7, 2015

    150x150_WUFI_20-Years20 years ago, in fall of 1995, the first WUFI®-Seminar was held in Holzkirchen, Germany. By that time the selling of WUFI® 1D (nowadays WUFI® Pro) started. We want to celebrate this anniversary by giving you 20% sale on all WUFI® software and all WUFI® upgrades within the next two months.
    The campaign runs between October 15 and December 15, 2015.
    During the campaign, the upgrade of WUFI® Pro 5.3 to WUFI® Pro 6.0 will be included in the new purchase price of 2300€. You will be informed via E-Mail as soon as the upgrade is available (expected release at the end of November 2015).
    For further information, please visit the online shop from October 15 onwards.


    Making a great product even better

    May 20, 2015

    150x150_Webseite-ScreenshotAs part of the launch of the updated versions of WUFI® Plus and WUFI®Passive, the no-cost WUFI® Plus Free and WUFI® Passive Free packages and the WUFI® product website have been updated. The updated software and website offer new and enhanced content and features.



Last Update: October 9, 2015 at 11:17