EN 13829 - ISO 9972:2015
Overview of the main changes introduced by the current measurement standard ISO 9972:2015, which supersedes the previous standard EN 13829.
25th International Passive House Conference
The 25th International Passive House Conference will take place in two parts this year: From September 10 - 12, 2021, an on-site event is planned at the Historische Stadthalle in Wuppertal with an accompanying trade exhibition, live stream included. On 14 and 15 Septbemer, the second part of the conference will take place as an online-only event. Don't miss it: Lecture by Dipl.-Ing. Stefanie Rolfsmeier (BlowerDoor GmbH) on September 14 "The air permeability measurement of a 125 m high-rise building". Interested parties can participate in the Passive House Conference both on site and online.
12 International BuildAir Symposium
June 25 - 26, 2021
Bilingual online conference
With the free programme, you can work cloud-based on several computers and with several employees of a team or a group of companies. The new pricing structure adapts to customer requirements with the charging of one token per project and is easy to calculate. Every new customer also receives a free sample measurement to familiarise themselves with the intuitive programme.
Excel Calculation Tool
According to ISO 9972, a natural pressure difference of 5 Pascal must be maintained for a standard-compliant BlowerDoor measurement. To estimate the natural pressure differences at the building envelope due to thermal effects, we have developed a great Excel calculation tool for you and made it available in the
Wind effects on the building envelope
How do the forces of wind affect the building envelope? What differences can be observed on one or more of the outer walls? How can the measurement setup for long-term measurements looks like? We have pursued these questions and have compiled them for you in a short
30 Years of BlowerDoor - 30 Applications and Measurement Methods
There was a lot of positive feedback on our 30 short presentations published to celebrate the 30-year success story of the Minneapolis BlowerDoor in Europe from March to October 2019. Read all abstracts at
Get the TEC Auto Test App now!
The TEC Auto Test app allows you to wirelessly connect with a DG-1000 oder DG-700 pressure gauge to conduct an automated airtightness test of a building according to ISO 9972.
How to measure very airtight buildings
The excellent quality of the building envelope or the apartment envelope with air exchange rates of 0.6 h-1 and smaller are new challenges for measuring teams during the performance of the air permeability measurement, which can be mastered with knowledge of the measuringprocedure and patience. In her article Dipl.-Ing. Stefanie Rolfsmeier explained how the measuring procedure looks like in such cases and gives recommendations on how to achieve reliable and repeatable measurement results. The article is available to our customers in the
New: The Spray Bar
Now available at BlowerDoor GmbH: The SPRAY BAR - a robust spraying system that creates a steady, closed film of water to simulate drivingrain on building envelopes.
Calibration at BlowerDoor GmbH
Benefit from the calibration of your BlowerDoor fans and your BlowerDoor pressure gauges with DAkkS-certificate if needed! Adjustment is always included.