Air Filtration Lines

Air Filtration Lines

Those Ugly Dark Lines On My Carpet
Along My Walls and Under My Doors

What Causes Air Filtration Lines?

Air Filtration Lines are caused when the carpet acts as a ‘filter’ while air flows through it.  Dust and other airborne pollutants such as soot from burning candles, poorly ventilated fireplaces, air pollution, cooking oils or anything else floating in the air can accumulate on the carpet over time. The soiling condition can occur quickly, or it may develop over a Carpet - Air Filtration Diagram 1period of months or years. The level of soiling is dependent upon the volume of airflow
and the level of pollutants in the air. Filtration soiling is not a carpet defect, or a result of the quality of carpet selected. The condition will obviously appear more pronounced on lighter colorations than darker colorations.  Air filtration lines may return even after they are cleaned and removed.  Follow the tips below to prevent them from forming.

Where Do Air Filtration Lines Appear?

Filtration soil areas may appear along baseboards, under doors, along the edges of stairs, in the middle of the floor where plywood subflooring materials have been joined or around the perimeter of furniture.

Tips To Reduce Air Filtration Lines

  • When possible, open interior doors to reduce air pressure differences between rooms.  If doors are closed the air may flow under closed doors or walls while the HVAC system is in operation.
  • Seal cracks in the subfloor, as well as under baseboards and edges of stairs to reduce airflow.
  • Keep air inside the home as clean as possible by reducing indoor air pollutants, such as cooking emissions, fireplace smoke, burning candles, cigarette smoke.
  • Install and regularly clean or replace your HVAC air filters.
  • Call Quality Air Duct Cleaning at 260-492-4247 or visit  to have your air ducts cleaned which will help keep the air that circulates through your home clean.
Carpet - 1 Soiled Closet Carpet From Air Filtration Soil Carpet - 1 Soiled Closet Carpet Cleaning Contrast Carpet - 1 Air Filtration Lines Removed - Carpet Looks Like New
Carpet - 5 Dark Air Filtration Lines From Computer Base Circulating Air Carpet - 5 Referral Cleaning Out Air Filtration Lines In Fort Wayne Home Carpet - 5 Referral Cleaned The Carpet And Removed The Air Filtration Line
Carpet - 3 Dirty Dark Air Filtration Lines Around Air Duct Vent Carpet - 3 Referral Removed Air Filtration Lines From Carpet Around Air Duct Vent In A Fort Wayne Home OLYMPUS DIGITAL CAMERA
Carpet - 4 Air Filtration Lines On Carpet Along Baseboard - Wall Carpet - 4 Referral Cleaned Carpet And Competely Removed Air Filtration Lines Along Baseboard and Wall - After carpet-air-1-1-dirty-fort-wayne-carpet-air-filtration-lines-from-cigarette-smoking
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