IAQ6 min readIn preparation
CO₂ and indoor air quality: what the number actually tells you
Why CO₂ is often used as a ventilation indicator — and why it never tells the whole indoor-air-quality story.
The question behind the number
Indoor CO₂ measurements can help a project team understand the relationship between occupancy and ventilation over time. A reading must still be interpreted in the context of the room, occupancy and monitoring method.
What a useful study adds
Continuous evidence can reveal recurring patterns, differences between spaces and the periods that deserve closer attention. The final interpretation should follow the project question rather than a single isolated value.
Editorial status
This article is in preparation. The page currently provides a concise, non-regulatory overview and will be expanded following technical review.