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Infection risk and ventilation…

Contributions of the ILK Dresden to avoid infection


Air cleaners can reduce the risk of infection. However, an infection cannot be preempted completely.

An experts‘ recommentation, which was introduced in September 2021, defines the standards for mobile air cleaning devices: VDI-EE 4300 Blatt 14:2021-09 „Measurement of indoor pollution - Requirements for mobile air purifiers to reduce aerosol-borne transmission of infectious diseases“. It focuses on the performance of air cleaning devices regarding the elimination of viruses from the air of a room, and applies to devices which work with filtration, UV-C radiation or ionization/plasma.

The recommendation was compiled due to the current pandemic situation by the VDI/DIN Commission of Air Quality Control together with the VDI Society Constructing and Building Technology, and is exclusively available at Beuth.

October 5.-7., 2021

Indoor-Air | Frankfurt am Main: „The importance of ventilation technology has become clear since the beginning of the pandemic. Mobile air cleaning devices can be understood as bridge technology in combination with window ventilation or bad ventilation systems, so that the risk of infection inside of rooms can be reduced. Crucial for risk mitigation is the CADR (Clean Air Delivery Rate). The CADR stands for the efficieny of an air cleaning device, based on room size and the volume of clean air generated per minute.

Presentation Prof. Franzke "Luftreinigungsgeräte - Anforderungen zur gezielten Reduktion des Infektionsrisikos" von zur eröffnenden Podiumsdiskussion, welche unter dem Thema "Schlechte Luft an Deutschlands Schulen"stand.

03.-04.09.2021  AirCarr

Presentation: Application of Mobile Air Cleaning Devices in daily school routines

Presentation:Test Procedures of Mobile Air Cleaning Devices -First Experiences and Results


Interview mit Prof. Franzke in der Freien Presse zum Thema Einsatz von Umluftreinigern und Lüftungsgeräten in Schulen "Wir stehen vor einem Dilemma"-Freie Presse Zschopau: click


SIG - Science Talk zum Thema "Rund um Corona": Video


Articel in the magazin Welt: "Was Luftreiniger und UVC-Strahler wirklich bringen" from Norbert Lossau: click here


Wie sollte gelüftet werden? Ein kleiner Leitfaden des ILK Dresden: click here


Für die VDI-Sendung "Technik auf Ohr" antwortet Prof. Franzke auf Fragen, wie die Lüftung in Schulen gestaltet werden kann.

Beitrag VDI: Technik aufs Ohr vom 02.12.2020: click here


"Lüften oder Lüftung: Wie lässt sich das Infektionsrisiko in Klassenzimmern senken?" Artikel der in der Lokal-Zeitung Rems-Murr: click

more statements

Various associations from around the globe have thought about how measures to reduce the risk of infection can be taken and supported with the help of ventilation technology. Here, we have compiled some of their assessments. External sources may not necessarily reflect our opinion and we do not take responsibility for any of these statements.


Stellungnahme der Innenraumlufthygiene-Kommission zu Luftreinigern

Das Risiko einer Übertragung von SARS-CoV-2 in Innenräumen lässt sich durch geeignete Lüftungsmaßnahmen reduzieren - Stellungnahme der Kommission Innenraumlufthygiene am Umweltbundesamt

Positionspapier der Gesellschaft für Aerosolforschung zum Verständnis der Rolle von Aerosolpartikeln beim SARS-CoV-2 Infektionsgeschehen

Einschätzungen von Lüftungsmaßnahmen zur Infektionsvermeidung - ein kleiner Leitfaden des ILK Dresden

Europe (REVA)

REHVA COVID-19 guidance document - How to operate HVAC and other building service systems to prevent the spread of the coronavirus (SARS-CoV-2) disease (COVID-19) in workplaces


ASHRAE Position Document on Infectious Aerosols

China (CAR)

Recommendationson the operation of air conditioning and heating systems coping  with COVID-19

India (ISHRAE)

ISHRAE COVID-19 Guidance Document for Air Conditioning and Ventilation

Austria (Bundesministerium Klimaschutz, Umwelt Energie, Mobilität, Innovation und Technologie - Arbeitskreis Innenraumluft)

Positionspapier zu lüftungsunterstützenden Maßnahmen durch Einsatz von Luftreinigern zur Covid-19 Prävention und Einbringung von Wirkstoffen in die Innenraumluft

Positionspapier zur Lüftung von Schul- und Unterrichtsräumen – SARS-CoV-2

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