The major cause of indoor air pollution is the poor indoor air quality. The reasons for poor indoor air quality are various, but we’ll discuss the most common ones here.

According to a study, inadequate ventilation and the release of contaminants from indoor and outdoor sources are the primary reasons for indoor air quality problems.

People may be confused at “Inadequate ventilation”. Well, it may be insufficient air that is required to remove pollutants. Other factors that effect the air quality in a building are temperature, humidity, and microbial contamination.

One major reason for poor ventilation, i.e.the less supply of fresh air and excess of contaminated air in the building may be the early shutdown and late startup of a ventilation system. This normally happens in the working class, whereby the inhabitants of the house are out most of the time and when come back don’t bother to freshen the building with natural air.

Buildings that have been built to be more airtight to conserve energy, are the hub of air pollution. This is although an improved construction technique, but as it limits the amount of polluted air to escape, it’s not a good practice for health.