The 46^th AIVC conference "Innovations in Smart Ventilation and IEQ for Resilient and Adaptive Buildings" will take place on September 30 & October 1, 2026 at the Songdo International District in Incheon, Republic of Korea. This international event will be held jointly with the 14^th TightVent Conference and the 12^th venticool Conference.

Indoor carbon dioxide concentrations have been measured and discussed in the context of building ventilation and indoor air quality (IAQ) for more than 100 years. In recent decades they have been proposed as an easy way to evaluate the adequacy of ventilation, even to estimate ventilation rates, as well as an indicator of IAQ. Many of these proposals and applications of CO2 have been technically incomplete if not wrong. The application of indoor CO2 concentrations, as well as their misinterpretation, has increased in light of the COVID-19 pandemic.

A series of Ventilation Information Papers (VIPs) is being developed and published by the AIVC to present national trends and regulations on building and ductwork airtightness. This webinar will explore the building and ductwork airtightness practices in three countries: China, New Zealand, and Japan. Each nation represents a unique regulatory and construction environment, shaped by distinct climate conditions, national policies, and building practices.

As it is now a well-known fact that air leakage can significantly impact the building energy performance, more and more countries are introducing requirements or recommendations on new buildings’ airtightness level in their energy performance regulation. One key aspect to encourage good practice and good airtightness levels in new or retrofitted buildings is to properly include the air infiltration impact in the EP calculation.

Personal Environmental Control System (PECS) with the functions of heating, cooling, ventilation, lighting and acoustic has advantages of controlling the localized environment at occupant’s workstation by their preference instead of conditioning an entire room. This improves personal comfort, health and energy efficiency of the entire heating, ventilation, and air-conditioning (HVAC) system substantially. Personalized ventilation will also provide improved protection against cross contaminations, which are critical in open plan offices and workplaces with close distance.

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.

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. There is still a need for design guidelines and assessment methods in standard weather conditions, extreme scenarios (such as heat waves) and urban environments.

The conference "IEQ 2025: Rising to new challenges: Connecting IEQ to a sustainable future”, organized by ASHRAE and AIVC, will be held in Montreal, Quebec, Canada on 24-26 September 2025. The conference will also be the 13^th TightVent and 11^th venticool conference.

The 44^th AIVC conference "Retrofitting the Building Stock: Challenges and Opportunities for Indoor Environmental Quality" was held on 9 & 10 October 2024 in Dublin together with the 12^th TightVent conference and the 10^th venticool conference. There were 180 participants from 26 countries.

The conference consisted of parallel sessions largely devoted to:

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.

The conference consisted of 3 parallel sessions largely devoted to: