Dust Sources

Diagnosis

Dust comes from several sources and is difficult to eliminate completely. Increased dust could be a sign that it is time to change a dirty furnace or air conditioner filter, or a vacuum cleaner bag. Activities that produce dust (such as sanding) can also be a source of increase. Dust can also be introduced into your home through air leaks in ducts, or air infiltration through leaky doors and windows.

Dust Reduction Checklist

• Change or clean your furnace and air conditioner filters once a month or according to the filter manufacturer's instructions. Temporarily seal the filter in place with metal-back duct tape. Write the date on the tape with a marker so your know when it was last changed.
• Your clothes dryer should be vented directly to the outside. Inspect the vent duct. Make sure it is attached securely to the dryer. Check that it is clear of obstructions (e.g. lint). Check for holes that leak air. If vent duct is damaged replace it with a metal duct. The vent duct should be cleaned at least once a year.
• Consider leaving your shoes at the door so you don't track outside debris - often the largest source of dust - into your house.
• Sealing air leaks can help to reduce air infiltration that could be a source of dust.
• Sealing duct air leaks, especially the return duct, can help prevent dust from being circulated throughout your house.

Content courtesy of DOE.