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The March 2026 issue of the AIVC newsletter has just been released.
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From
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The March 2026 issue of the AIVC newsletter has just been released!
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The TightVent Airtightness Associations Committee (TAAC) was launched in September, 2012. The primary goal of the TAAC group is to promote reliable testing and reporting procedures. In the beginning, the TAAC working group was focusing on building airtightness tests, but in line … Continue reading →
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The text and images of this webpage is available for modification and reuse under the terms of the Creative Commons Attribution-Sharealike 3.0 Unported License and the GNU Free Documentation License (unversioned, with no invariant sections, front-cover texts, or back-cover texts).
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Ventilation Information Papers AIVC Ventilation Information Papers 45: Trends in building and ductwork airtightness in Belgium, France, Greece, Estonia, Latvia, Czech Republic, Spain, China, Japan, Republic of Korea, New Zealand, USA, Germany (2022–2024) AIVC Ventilation Information Paper 47: High-rise buildings … Continue reading →
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This webpage gives definitions of products frequently used in the context of airtightness. First, there is a table with translations of these product names into French, Swedish, Danish and Dutch. Below this table, a definition is given for each of these … Continue reading →
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During the EBC Technical Day held at CEPT University in November 2025, Arnold Janssens, Operating Agent of the Air Infiltration and Ventilation Centre (AIVC), delivered a presentation on the history, mission and future direction of AIVC.In this talk, he highlights the role of AIVC as the information centre on energy-efficient ventilation within the IEA Energy in Buildings and Communities (EBC) Programme, as well as its long-standing contribution to the dissemination of knowledge on air infiltration and ventilation in buildings.Established more than four decades ago, AIVC is today the longest-r
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This webinar follows up on contributions presented at the Buildair 2025 Symposium in Hannover and brings these insights to a wider international audience.Airtightness of the building envelope is essential for energy efficiency, thermal comfort, moisture safety and indoor air quality.
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Energy poverty is a growing challenge in Europe. As summer heatwaves intensify, the need for space cooling becomes increasingly crucial.. In 2023, data from the harmonised EU-SILC survey revealed that 26% of households were unable to keep their homes at a comfortably cool temperature during the summer of 2022, with this rate climbing to nearly 35% among the lowestincome group. Southern and eastern Member States, as well as urban residents and vulnerable populations, are the most affected. Inadequate cooling can lead to serious health issues and increased mortality rates. This report utilises harmonised survey indicators to map summer energy poverty across the EU, highlighting the growing spatial and social disparities in cooling adequacy and identifying the groups most at risk. Furthermore, it quantifies current residential cooling needs and unmet demand through an income-constrained model.
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The Air Infiltration and Ventilation Centre (AIVC) together with the Eduardo Torroja Institute for Construction Science (CSIC) (IETcc-CSIC) and venticool are organising a workshop entitled ‘Climate Change and Resilient Ventilation’ to be held on 21-22 April 2026 in Madrid.The 1 ½ day workshop will provide an opportunity for Spanish researchers and professionals, as well as international experts, to present and discuss recent advances in relation to the challenges that climate change imposes on buildings, related to indoor environmental quality, ventilation, human health and sustainability.This
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Ventilative cooling: natural airflows as the answer to overheating In modern, well-insulated buildings, heat dissipation presents a growing challenge. Ventilative cooling offers a sustainable solution by harnessing natural airflows through strategically positioned ventilation louvres. The DucoWall Acoustic 150 demonstrates its … Continue reading →
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In this design guideline, key points are explained to succeed in reducing energy use for HVAC systems with energy recovery systems. It covers the reduction of the heating and cooling need (load) due to ventilation and infiltration as well as the reduction of energy use for fans and heat generators. As background of the key points, performance indices and testing standards of energy recovery systems are explained.To depict the key point in a quantitative way, a building energy calculation program integrated with algorithms for energy recovery systems is used for case studies.
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ASHRAE and the United Nations Environment Programme (UNEP) have approved a new two-year work plan titled Life Cycle Refrigerant Management (LCRM), reinforcing their long-standing partnership to advance sustainable refrigerant practices worldwide. The plan was adopted during the 2026 ASHRAE Winter Conference … Continue reading →
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The 2002 Energy Performance of Buildings Directive (EPBD) already indicated the potential importance of airtightness. With the 2010 EPBD recast and its ambitious 2020 targets, there is even more pressure on these aspects since for most European climates and countries, … Continue reading →
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The AIVC -TightVent – venticool 2026 Conference: “Innovations in Smart Ventilation and IEQ for Resilient and Adaptive Buildings” is now accepting abstracts & proposals for topical sessions. The Conference will be held on September 30 & October 1, 2026 and … Continue reading →
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AIRBASE is the Bibliographic Database of the Air Infiltration and Ventilation Centre (AIVC). It contains abstracts of articles and publications related to energy efficient ventilation of buildings. Where possible, sufficient detail is supplied in the bibliographic details for users to … Continue reading →
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Airtightness in Practice: Long-Term Performance, Field Evidence, and Innovative Detection Methods Material: Flyer From Inspections to IAQ Measurement: Exploring Databases for Better Indoor Environments, 25 November 2025 Material: Flyer, Presentations, Recordings Comparing Ventilation Trends in Southern Europe: Italy, France & … Continue reading →
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TightVent and AIVC work closely together, resulting in a range of AIVC projects with strong involvement of TightVent. Project name Duration Testing, reporting and quality schemes for building airtightness 2011–2013 Quality of methods for measuring ventilation and infiltration in buildings … Continue reading →
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The February 2026 edition of the REHVA Journal has been released, featuring the theme "Rising to New Challenges: Connecting IEQ to a Sustainable Future".The issue includes, among other articles, selected contributions from the 45th AIVC conference and ASHRAE 2025 IEQ conference held on September 24-26, 2025, in Montreal, Canada together with the 13th TightVent and the 11th venticool conferences.Featured articles include:(Editorial) Rising to New Challenges: Connecting IEQ to a Sustainable Future – Arnold Janssens (AIVC Operating Agent; Ghent University; INIVE, Belgium)(Dis)comfort and Health-I
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The event is at Loughborough University on 26-27 March
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This webinar follows up on contributions presented at the Buildair 2025 Symposium in Hannover and brings these insights to a wider international audience. Airtightness of the building envelope is essential for energy efficiency, thermal comfort, moisture safety and indoor air quality. Although … Continue reading →
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WindowMaster and FIEGER have achieved new system certification under EN 12101-2 for a jointly tested louvre window solution, combining the WML 870 louvre drive and the FLW 32 louvre window. The certified unit delivers reliable smoke and heat extraction in … Continue reading →
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On September 24-26, 2025 we had the privilege of attending the 45th AIVC (Air Infiltration and Ventilation Centre) – ASHRAE IEQ joint – 11th Venticool conference titled “IEQ 2025: Rising to new challenges: Connecting IEQ to a sustainable future” held in Montreal, … Continue reading →
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