It has estimated that indoor air pollution costs Americans tens of billions of dollars each year in direct medical expenses and lost productivity. The effects of indoor air pollution on health is clear. With too little ventilation, or without a high-efficiency air cleaner, pollution is trapped inside. Dust mites and cat dander are two of the most potent allergens. Any gas appliance may emit carbon monoxide if not vented properly.
Radon seeps from the soil into homes in many parts of the country.
They may release such toxic gases as formaldehyde, benzene and toluene. Cleaning products, personal care products and chemicals used in hobbies such as painting, woodworking and photography also are sources of chemical pollution. Relatively low-cost solutions are immediately available for most indoor air pollution problems. Remove the source of pollution. For example, don't allow smoking in your home.