There are various sources of indoor air pollution lurking in the home. These include combustion sources such as oil, gas, coal, wood and tobacco products, building materials, asbestos-containing insulation, wet or damp carpet, mold and various furnishings.
Other categories of offenders include household cleaning and personal care products, hobby and craft supplies and, ironically enough, many popular air fresheners.
Today’s homes are becoming much more energy-efficient. Tightly sealed homes are great for energy savings, but terrible for ventilation. The air in your home can become stale. Combined with the fact that high temperatures and humidity levels can also increase concentrations of some indoor pollutants. We need to bring in fresh, clean air without allowing cold air into our energy efficient home.courteous.