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Exhaust air dampers are part of an extraction system and a permanent penetration in the thermal building envelope, even though the vent is out of operation most of the time (about 23.5 hours per day). Exhaust air dampers with air leakages can cause considerable infiltrations resulting in significant heat losses. We used the MLM measuring...

We all know that the airtight or sufficiently air-impermeable (which is the physically correct term) building design is state-of-the-art, i.e., complies with the “Recognized and Generally Accepted Good Engineering Practices”. It is relatively easy to achieve a sufficiently air-impermeable design for new buildings when ensuring that it is...

This presentation is the recording of the first 100 airtight tests in Greece, from 2010 until today. The inspections were carried out in private homes and in large-scale commercial buildings, of different construction dates, renovated or not, in various cities of the country and on islands. Most of the inspections were carried out in the area of Attica...

Aside from amending terms and definitions, the purpose of the national Annex NA is to introduce “Procedure 3”. The annex has the purpose to ensure that the measuring method is feasible in Switzerland and that the airtightness quality in buildings is good. The building preparation, for instance, is slightly different compared to the... 

The book of proceedings of the 12th International BUILDAIR Symposium "Airtight Buildings, Thermography and Ventilation Systems in Practice",  held on June 25-26  2021. Contains 36 abstracts.

AIVC's Ventilation Information Paper #45.8 summarizes current knowledge on trends in building and ductwork airtightness in China.

AIVC's Ventilation Information Paper #45.7 summarizes current knowledge on trends in building and ductwork airtightness in Greece.

A recorded presentation covering this topic is also available at this link.

Many differences exist between countries in the requirements and regulations for ventilation of dwellings, offices, classrooms and other spaces. Sometimes the variation of the ventilation requirements for the same building type between countries is more than a factor of five. There are strong drivers, e.g., climate change, to reduce energy consumption for HVAC and therefore these variations are worth examining. Before reducing ventilation rates, it is critical to understand the reasons behind them.

The Book of Proceedings of the 42^nd AIVC - 10^th TightVent - 8^th venticool Conference: "Ventilation Challenges in a Changing World" held in Rotterdam, Netherlands on 5-6 October 2022

The Presentations at the 42^nd AIVC - 10^th TightVent - 8^th venticool Conference: "Ventilation Challenges in a Changing World" held in Rotterdam, Netherlands on 5-6 October 2022