REHVA successfully hosted a highly engaging seminar during the 2026 edition of Mostra Convegno Expocomfort (MCE), bringing together leading experts and professionals to discuss the evolving landscape of indoor air quality (IAQ) and air filtration in HVAC systems.
The session was marked by a strong level of participation and lively discussion, reflecting the growing importance of IAQ in both policy and practice. The quality of exchanges and the engagement of the audience underscored the relevance of the topic across the HVAC community.
Expert contributions and moderation
The seminar benefited from the skilled moderation of Tobias Zimmer (Camfil AB), who facilitated a dynamic and interactive discussion throughout the session.
REHVA extends its sincere appreciation to the distinguished speakers and panellists who contributed their expertise:
- Livio Mazzarella (Politecnico di Milano, REHVA President)
- Romano Alberto Basso (Sagicofim Spa)
- Alain Ginestet (CETIAT)
- Riccardo Romanò (Lombarda Filtri srl)
- Paolo Tronville (Politecnico di Torino)
Their insights provided a comprehensive overview of both current challenges and future directions in air filtration technologies.
Focus on the re-edition of REHVA Guidebook 11
At the core of the seminar was the presentation of the upcoming re-edition of REHVA Guidebook No. 11: Air Filtration on HVAC Systems, a key reference for professionals working in ventilation and building engineering.
In a context of increasing global awareness of indoor air quality, the guidebook highlights the critical role of advanced air filtration technologies in mitigating outdoor pollutants and improving occupant health and comfort.
Key updates in the new edition
The revised guidebook introduces several important developments compared to the 2020 edition:
- Global standards alignment
Full integration of EN ISO 16890 across major European standards, including EN 16798-3, EN 13053, and VDI 6022, alongside its progressive adoption within ASHRAE standards (62.1, 241, and 189.1). - Enhanced focus on pathogen mitigation
New guidance addressing airborne pathogen removal, reflecting lessons learned from the COVID-19 pandemic and reinforcing the role of filtration in health protection. - Gas-phase filtration classification
Incorporation of the new EN ISO 10121-3 standard, providing a framework for evaluating gas-phase air filters. - Integration of recent research
Inclusion of the latest scientific findings and technological developments published since the previous edition.
A globally relevant reference
Developed by a multidisciplinary group of European experts—including manufacturers, laboratory specialists, and academics—the guidebook provides practical and scientifically grounded guidance applicable across different regulatory frameworks, including ISO, EN, and ASHRAE standards.
It is intended as a key resource for professionals involved in the design and operation of safe, efficient, and high-performance ventilation systems.
Upcoming release
The newly updated Guidebook 11 will be made available on the REHVA website in the coming days.
Professionals and stakeholders are encouraged to follow REHVA’s communication channels to stay informed and access this essential resource upon release.