Energy Efficient Buildings Often Have WORSE Indoor Air Quality
According to the National Institute of Occupational Safety and Health (NIOSH), inadequate ventilation is the largest cause of indoor air pollution. Other significant factors are bioaerosols, building products, contamination from outside air, and a variety of sources that are yet to be identified.
Air quality in a building is largely the result of an ongoing competition between the pollutants and the ventilation system. Whereas temperature, humidity, and microbial contamination are the other contributing factors.
Tightly sealed buildings without adequate ventilation systems trap pollutants inside. It has unexpectedly resulted in increased air contamination resulting from decreased air exchange.