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Background <p>Good indoor air quality is a&#xa0;key objective of environmental and public health policy and has gained increased importance in the context of energy-efficient building designs and experiences from the coronavirus disease 2019 (COVID-19) pandemic. The aim of this study is to describe public knowledge and attitudes related to indoor air quality as well as ventilation behavior and changes since the pandemic to identify leverage points for behavioral interventions.</p> Methods <p>In February 2025, 1902 people were surveyed nationwide using a&#xa0;standardized questionnaire via an online panel. The composition of the sample is largely comparable to the sociodemographic characteristics of the German population.</p> Results <p>Indoor air quality is considered important by a&#xa0;clear majority of 93%, yet there are gaps in knowledge regarding specific influencing factors such as various pollutants. Regarding ventilation habits, for example, the frequency is too low: Only about one in ten people ventilate several times an hour, while the majority ventilate several times or once a&#xa0;day. Indoor air quality monitors are not widely used. Furthermore, more than two-thirds do not use monitors or are unaware of them; where they are available, they support measurement-based ventilation habits.</p> Conclusion <p>The findings reveal a&#xa0;clear gap between attitudes and actual behavior and highlight the need for everyday, structurally embedded interventions. To sustainably improve indoor air quality, a&#xa0;combination of targeted knowledge transfer, the establishment of simple ventilation routines, and technical support through monitoring and feedback systems appears appropriate.</p>

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Raumluftqualität verstehen und gestalten: Erkenntnisse zu Wissenslücken, Einstellungen und Lüftungsverhalten als Ansatzpunkte für gesunde Innenräume

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月6日

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  • Franziska Drescher,
  • Jennifer Niessner,
  • Anja Daniels,
  • Nicola Marsden

摘要

Background

Good indoor air quality is a key objective of environmental and public health policy and has gained increased importance in the context of energy-efficient building designs and experiences from the coronavirus disease 2019 (COVID-19) pandemic. The aim of this study is to describe public knowledge and attitudes related to indoor air quality as well as ventilation behavior and changes since the pandemic to identify leverage points for behavioral interventions.

Methods

In February 2025, 1902 people were surveyed nationwide using a standardized questionnaire via an online panel. The composition of the sample is largely comparable to the sociodemographic characteristics of the German population.

Results

Indoor air quality is considered important by a clear majority of 93%, yet there are gaps in knowledge regarding specific influencing factors such as various pollutants. Regarding ventilation habits, for example, the frequency is too low: Only about one in ten people ventilate several times an hour, while the majority ventilate several times or once a day. Indoor air quality monitors are not widely used. Furthermore, more than two-thirds do not use monitors or are unaware of them; where they are available, they support measurement-based ventilation habits.

Conclusion

The findings reveal a clear gap between attitudes and actual behavior and highlight the need for everyday, structurally embedded interventions. To sustainably improve indoor air quality, a combination of targeted knowledge transfer, the establishment of simple ventilation routines, and technical support through monitoring and feedback systems appears appropriate.