What does CO2 represent in terms of indoor air quality?

Carbon dioxide (CO2) concentration is an important factor when evaluating indoor air quality. It is primarily used as an indicator of ventilation levels in a space. High levels of CO2 can signify inadequate ventilation and may imply that there is a buildup of stale air, which can negatively affect occupant comfort and wellbeing. Proper ventilation helps to maintain a balance in indoor air quality, as it ensures that fresh air is continuously being circulated while reducing the levels of CO2 and other pollutants that can accumulate over time.

Monitoring CO2 levels allows assessors and facility managers to determine if additional ventilation is needed, thereby improving the health and comfort of the individuals occupying the space. This is crucial in settings such as schools, offices, and residential buildings where many people gather and require adequate fresh air to breathe effectively.