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A conference of the
Energie- und Umweltzentrum
am Deister GmbH


12th International BUILDAIR Symposium

Airtight Buildings, Thermography and Ventilation Systems in Practice

June 25-26, 2021 in Hannover and online

A lot has changed since our last symposium in 2019. Still, we hope that we will be able to meet in person again and thus decided to host the 12th International BUIDAIR Symposium as a combined on-site and online event. We believe this is a good solution for everyone.

Information and presenting and discussing experiences

We cordially invite all colleagues from Germany and abroad to inform on latest results, current insights and experiences at the symposium. That the needs for well-founded technical information and exchange among measurement teams, planners, craftsmen, architects, and energy consultants in the light of the pressing challenges is still very large, have confirmed the symposia in 2017 and 2019. To both meetings we could welcome approx. 180 participants – from Germany and all over the world. The 2021 symposium informs on the one hand about current developments and new approaches, and on the other hand promotes exchange among each other, even across national borders.

Thematically, the 12th International BUILDAIR Symposium addresses, among other tings, hands-on experience with EN ISO 9972 and its national annexes, the measurement accuracy of differential pressure measuring methods and product enhancements. Again, the focus will be on on the assessment of leaks, measurement of very large buildings, air ducts and air vents and the application possibilities of building thermography. Quality assurance challenges of new and renovation of existing buildings are also discussed.

All presentations will be translated as usual simultaneously.

The most important information about the symposium as pdf to download and redistribute - thank you so much.

Thanks a lot to the sponsors

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and co-operation partners 

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ig_logo.jpg Logo_PHI_neu_DE.jpg Tightvent-ohne.jpg Logo_VATH_RGB_bearb.png


End of February 2021 you will find here the lecture program for the 12th International BUILDAIR Symposium.


The attendees of the International Buildair Symposium appreciate the opportunity to get informed about established and new products and services during the lecture breaks. For this reason, a specialist exhibition is to take place again in 2021 to accompany the lecture programme. Companies that deal with the topics of airtight building envelope, thermography or ventilation technology can present themselves and their products and services. Please feel free to reserve your stand in the accompanying exhibition.

Exhibitor service

Information and forms for your stand application can be downloaded here soon.

Answers to all your questions and more detailed information is available from

Margareta Hollmann (Monday to Thursday 10 am to 4 pm):
phone: + 49 5044 975-22 
e-mail:   hollmann(at)e-u-z.de


Detailed information about your participation and registration you will find here soon.

Conference dates 

Friday/Saturday, June 25/26, 2019

Conference languages

Simultaneous interpretation will be provided for the complete conference in English and German.

Conference record

All abstracts will be included in the printed Conference Proceedings in German and English. The contributions provided by the speakers in their original language can be downloaded from the website (www.buildair.eu) after the conference.

Conference secretariat

Energie- und Umweltzentrum am Deister GmbH
Zum Energie- und Umweltzentrum 1
31832 Springe, Germany
Tel. +49 5044 975-20
Fax +49 5044 975-66
E-Mail: bildung@e-u-z.de
Kontakt: Sabine Schneider


Thank you very much for the highly interesting submissions.


Submission of paper proposals January 15, 2021
Notification of acceptance January 31, 2021
Submission detailled papers June 11, 2021
Submission of Power-Point-Presentations June 18, 2021



Contact for journalists

Ursula Mellema


Please feel free to download

Order form conference proceedings from previous symposia



Information in accordance with § 5 TMG

Company: Energie-und Umweltzentrum am Deister GmbH
Address of company: Energie- und Umweltzentrum 1
31832 Springe-Eldagsen
Phone: +49 5044 975-0
Fax: +49 5044 975-66
E-Mail: info [at] e-u-z.de
business manager: Uwe Brockmann
Commercial register entry: HRB 102155
registry court Hannover
VAT-Id.-Nr.: DE 196244147
Tax-Nr.: 42/200/03435
Responsible person for the content: Uwe  Brockmann
Dispute resolution: The European Commission provides a platform for online dispute resolution: https://ec.europa.eu/consumers/odr
Our e-mail address isto be found above in the imprint.
We are not willing or obligated to participate in dispute resolution procedures ahead of a consumer arbitration board.
Photos: © Energie- und Umweltzentrum am Deister 


Legal disclaimer

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The content of our website has been compiled with meticulous care and to the best of our knowledge. However, we cannot assume any liability for the up-to-dateness, completeness or accuracy of any of the pages. Pursuant to section 7, para. 1 of the TMG (Telemediengesetz – Tele Media Act by German law), we as service providers are liable for our own content on these pages in accordance with general laws. However, pursuant to sections 8 to 10 of the TMG, we as service providers are not under obligation to monitor external information provided or stored on our website. Once we have become aware of a specific infringement of the law, we will immediately remove the content in question. Any liability concerning this matter can only be assumed from the point in time at which the infringement becomes known to us.

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Our website contains links to the websites of third parties (“external links”). As the content of these websites is not under our control, we cannot assume any liability for such external content. In all cases, the provider of information of the linked websites is liable for the content and accuracy of the information provided. At the point in time when the links were placed, no infringements of the law were recognisable to us. As soon as an infringement of the law becomes known to us, we will immediately remove the link in question.


The content and works published on this website are governed by the copyright laws of Germany. Any duplication, processing, distribution or any form of utilisation beyond the scope of copyright law shall require the prior written consent of the author or authors in question.


May 2018 / source: eRecht24

Privacy Policy

This privacy policy is intended to inform you, as the user of our website, about the nature, scope and purpose of the collection and use of your personal data by us.

Responsible in the sense of the European General Data Protection Regulation (Datenschutz-Grundverordnung, DSGVO) and other national data protection laws of the member states as well as other data protection regulations is:

Energie- und Umweltzentrum am Deister GmbH 
Zum Energie- und Umweltzentrum 1 
31832 Springe-Eldagsen 
Telefon: +49 5044 975-0 
info [at] e-u-z.de

Data Protection

Safeguarding your personal data is a serious matter for us. We want you to feel safe and secure when you visit our websites. The protection of your privacy is an important objective for us when processing your personal data. 

Usually the use of our website is possible without personalized data (i. e. name, address, …). In case you may be asked to provide personal information, answering these questions is optional. We use the personal information provided by you solely for the purpose of assisting you individually, which normally means answering your inquiry. 

Any outside service providers whose services we use for individual offerings on this website, e.g., in connection with our applicant portal, are selected with the utmost degree of care in terms of data protection. The nature and scope of the data processing work to be performed are determined contractually, and the service providers with whom we contract are required to comply with the same level of data protection as we do.


A cookie is a small piece of data that a website asks your browser to store on your computer or mobile device. The cookie allows the website tto "remember" your actions or preferences over time. Most browsers support cookies, but users can set their browsers to decline them and can delete them whenever they like.

Most of our Cookies are so-called “session-cookies”. They are delayed automatically at the end of the visit. Other Cookies remain stored in your computer until you delete them.These Cookies allow us to recognize your browser at your next visit. You can install your browser that you are informed about Cookies and you can allow it in certain cases or install a general deletion of Cookies after your visit. General deactiviation of Cookies may lead to an only. 


The provider of the web pages automatically collects and stores information in so-called server log files, which your browser automatically submits. These are: 
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If you send us an inquiry by e-mail, your details, including the contact details you provided there, will be stored for the purpose of processing the request and in case of follow-up questions. We will not share this information without your consent.

Registration form

The personal data you provide us with the registration form will be required for the processing of your registration and participation. If required to perform the contract, your personal information will be passed on to public entities to comply with regulatory requirements (eg, tax authorities), to internal entities to perform the individual business processes (eg, accounting, marketing), and to external partners (eg. mail-order firm). A transfer of your personal data to third parties for purposes other than those mentioned does not occur.

The protection of your personal data is very important to us. However, environmental and climate protection are no less important to us. Therefore, we ask for your permission to send you information about our events by e-mail. You can revoke this consent at any time by written notification (by post, fax or e-mail, address details see above) to the e.u. [z.].

Photos will be taken during the conference for documentation and public relations purposes. Therefore, we ask for your consent to publication. We point out that photos, provided they are published on the Internet, can be accessed by anyone. It can then not be ruled out that such persons continue to use the photos or pass them on to other persons.

You have the right to revoke your consent at any time with effect for the future. In this case, your personal data will be deleted immediately, unless legal provisions preclude this. You can always inform yourself about the data stored about your person. For more information, see your rights section.

Your rights

Upon written request, we will inform you about the specific data we have stored concerning you (e.g., name and address). If you have any questions about data security, please contact us at any time at the address given above. You also have the right to complain to us about the processing of your personal data by a data protection supervisory authority.

Objecting to advertising emails

The use of contact data published under the obligation to provide an imprint for sending of unsolicited advertising and information material is objected to. We reserve the explicit right to initiate legal proceedings in case of receipt of unsolicited advertising, for example by spam emails.


May 2018 / sources: e-recht24.dedatenschutz.org