The 13^th International Buildair Symposium will take place on June 2^nd and 3^rd, 2023 in Hanover. As always, this bilingual industry forum – all presentations and discussions will be interpreted simultaneously – will offer an attractive and highly informative conference program. A trade show will run parallel to the conference.

A pressurization test with a blower door fan is the most widely accepted and used method to evaluate the airtightness of a building, but it presents some drawbacks. Alternative methodologies have been, or are being, developed and three of them were presented in this webinar:

The 43^rd AIVC conference "Ventilation, IEQ and health in sustainable buildings" was held on 4 & 5 October 2023 in Copenhagen together with the 11^th TightVent conference and the 9^th venticool conference. There were 200 participants from 33 countries.

A smart ventilation system is able to continually adjust itself to provide the desired IAQ while minimizing energy use, utility bills, thermal discomfort and noise. A smart ventilation system is also responsive to e.g., occupancy, outdoor conditions, and can provide information about e.g., IAQ, energy use and the need for maintenance or repair.

Building airtightness tests are now required or promoted in more and more countries, in particular for residential buildings. However, airtightness tests in high-rise buildings remain particularly challenging and uncommon.

There have worldwide been many activities during and after the COVID-19 pandemic to develop guidelines, standards, or new regulations to decrease the risk of cross contamination in the indoor environment.

Ventilative cooling emerges to be a key element in the strategy to meet the cooling demand in buildings while cutting the CO2 emissions. Ventilative cooling also enhances thermal comfort and mitigates heat stress in buildings. Despite these benefits, the practical adoption of ventilative cooling remains limited among designers.

Occupants use windows to control their thermal comfort and indoor air quality (IAQ). However, occupants often have to make a compromise between thermal, acoustic and visual comfort, IAQ and energy use for space conditioning. Moreover, they are not only looking for good indoor environmental quality, but also for their needs for security and privacy.