What is Indoor Air Quality (IAQ) ?
         
            

Indoor Air Quality (IAQ) refers to the cleanliness and environmental comfort of the air within the indoor environment.

Most people are aware that outdoor air pollution can damage their health but many do not know that indoor air pollution can also have significant health effects. United States Environmental Protection Agency (US-EPA) studies of human exposure to air pollutants indicate that indoor pollutants levels may be 2-5 times, and occasionally more than 100 times, higher than outdoor levels.

Air conditioning is used to maintain temperature, humidity, air circulation, and air quality within an indoor environment. A comfortable environment was generally taken to be a healthy one, but an indoor environment may be comfortable without being healthy. Today health as well as comfort are both concerns when humans are occupants of an indoor space.