In recent years, scientific evidence has indicated that the air within our homes can be more polluted than outdoor air
This is worsened by the fact that people spend approximately 90 percent of their time indoors. Sources that emit gases or particles into the air are the primary cause of IAQ problems in homes. Poor ventilation can increase levels of these pollutant levels by not directing them outside and by not bringing in enough “fresh” outdoor air to dilute indoor pollutants. High temperature and humidity can also play a role.
Indoor air pollutants can cause a variety of health problems including irritation of the eyes, nose, and throat, headaches, dizziness, fatigue, asthma, and even eventually respiratory disease, cancer, and heart disease. The young, the elderly, and the chronically ill, especially those suffering from respiratory or cardiovascular disease, are most susceptible to the effects of poor indoor air quality.