Dust is impossible to remove entirely, but an excessive amount may be a sign your air conditioner’s filter may need changed. (This should be done monthly anyway.) It also accumulates as a result of leaky windows, doors or ducts, or incorrectly vented dryers.
Since Americans spend about 90% of their day indoors, this is a bit disconcerting.
That’s why we recommend seeking ENERGY STAR—qualified products and equipment (such as air purifiers and mechanical ventilation) and having all the installation and maintenance done by a trained professional. In addition to improved air quality (less allergens!), you’ll also see a decrease in your monthly electric bills and energy usage.