What is a common symptom of inadequate ventilation in a building?

A common symptom of inadequate ventilation in a building is poor indoor air quality. When ventilation is insufficient, it can lead to the accumulation of pollutants, allergens, and other contaminants in the indoor environment. The air may become stale, and occupants may notice odors or feel discomfort due to inadequate fresh air supply. This can result in symptoms such as fatigue, headaches, or respiratory issues, indicating that the air quality is not meeting acceptable standards.

Inadequate ventilation typically allows pollutants from indoor sources, like furniture, cleaning products, and even human occupancy, to build up over time. As these contaminants accumulate, the overall quality of the air deteriorates, leading to adverse health effects and reduced comfort for individuals inside the building. Improving ventilation can help to alleviate these issues by introducing fresh air and diluting harmful substances.