Ventilation & Indoor Air Quality

Buildings nowadays, especially homes are tightly built with aluminium casing windows and rubber lining doors in order to retain energy efficiency. Most homes and commercial buildings have windows and doorways that are sealed to limit heating or cooling loss. These, however, come at the cost of poor indoor air quality (IAQ). That means, staying indoors will not give us clear and fresh air because the concentration of indoor pollutants, such as odors, dust, pet dander and bacteria, can be up to five times higher than found outside. These biological pollutants can be hazardous to occupants and structural integrity.

Volatile Organic Compounds (VOCs) are carbon-based compounds that easily evaporate. These types of gases are released from building materials, carpets and furniture as “outgassing”. Other household items that emit VOC include hair sprays, paints, lacquers, finishes, cleaning solvents, pesticides, etc. VOC can ultimately sensitize certain people to react to them.


In a word, the absence of ventilation leads to improper airflow and coupled with the presence of pollutants, eventually results in oxygen deficiency which is definitely important and necessary for humans.

Because of the above reasons, people are becoming increasingly aware of the importance of ventilation and indoor air quality. They believe that proper and effective ventilation is essential for removing excessive moisture that breeds pollutants, which can deteriorate the building’s structure and cause health problems. Here, KDK Ventilating Fans play an important role; by removing Volatile Organic Compounds (VOCs), to ensure proper indoor air circulation and exchange of indoor and outdoor air.