Monthly Archives: April 2013

Filtration Lines

blacklinesMany clients have black lines on the carpet around their baseboards, doorways and air vents. These lines are called pollution filtration or air filtration lines. Many professionals believe these lines come from the heater system in your home, but actually they do not. Forced air HVAC systems just blow the pollutants around until they settle on the floor and are filtered out of the air by the carpet.

The reason why this occurs is that there are tiny pollutants from your HVAC system smaller than a micron in size. Because they are that tiny they usually go through any type of filtration system that you may have on your HVAC system.

There is much debate why some parts of the US have this problem worse than other parts. The generally prevailing theory is that these pollutants are usually produced in densely populated areas and in areas of the country where there are older power plants spewing these pollutants into the air. The weather pattern also may have to do with it. Since many power plants are in the Midwest, that weather pattern brings the pollutants west to east to the mid-Atlantic states.

The lines generally can only be seen on lighter carpets, especially white carpets. Many carpet cleaning companies over the years have come up with products that say they can remove these lines, but generally they cannot be 100% successfully removed safely from any carpets

And on a side note, burning candles in your home can also add to these lines.

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