What is Dust Made of and How Does It Affect Your Indoor Air Quality? Posted June 9, 2016 According to an urban legend, dust is made up of human skin. Of course in reality, it’s not correct. Although human skin does contribute to dust, dust is actually various things. So what exactly is dust composed of and how is it affecting your indoor air quality? The Source There are only two places that dust can stem from, indoors and outdoors, and we are the ones that are bringing dust inside from the outdoors. The outdoor part of dust forms from soil particles and pollen scuffled in on our shoes or through open doors and windows. This adds up to about two-thirds of the dust in your house. The indoor source of your dust is a number of various things. A little part of which is, in fact, human skin. A large amount of it is fibers from your carpet, furniture or bedding, and if you include a pet, there is also some pet dander and fur also. Dust Mites Whenever we bring up dust, we must also talk about dust mites. Dust mites are little arachnids and their top food source is dead human skin cells and they make up a large part of dust. Dust mite droppings are the most prevalent cause of allergy and asthma symptoms according to the American Academy of Allergy, Asthma & Immunology. Dust mites also prosper in humidity, so by maintaining a correctly humidified home, you’re able to cushion their impact. What Can You Do? Lennox produces a number of products that raise your indoor air quality. We carry a PureAirTM air purification system which is the only single indoor air quality system that battles all three classes of contaminants. We also have whole-home ventilation systems which brings fresh air into today’s tightly sealed homes. And, of course, we have many whole-home humidity control options. Your indoor air quality is important to us. We will work with you to keep your home environment as comfortable as possible. If you have any questions about your air quality or anything related to the comfort of your home, our professionals are just a phone call away. We make it easy to schedule an appointment with us by giving us a call at 847-306-8990.