In order to improve the air quality in rooms, it is helpful to permanently check the quality. It is important to interpret the measured values and to understand their effects in order to take measures in time to prevent effects on humans.
The following table shows the different levels of air quality evaluated according to your Indoor Air Quality Index (IAQ).

IAQ Index

Air quality

Effects (long-term exposure)

Proposed action

0 – 50


Clean air; the best for your well-being

No action required

51 – 100


No irritation or effects on well-being

No action required

101 – 150

Slightly contaminated

Reduction of well-being possible

Ventilation suggested

151 – 200

Moderately contaminated

Clearer irritation possible

Increase ventilation with clean air

201 – 250

Highly contaminated

Exposure can cause effects such as headaches, depending on the nature of the VOCs

Improve ventilation

> 250

Highly contaminated

More serious health problems possible if harmful VOCs are present

Contamination should be identified if the level is reached without the presence of people; maximize ventilation & reduce presence

Fire probability

IAQ IndexFire probability
≤ 300No Fire probability
301 - 350Low Fire probability
351 - 400Increased fire probability
> 400High fire probability