Question about 3M Filtrete Ultra Allergen Air Filter (Purple Series) 12x36x1 Filtrete Purple Air Purifier
My filtrete central air filters turn black after about a week
I am also experiencing this problem, as well as 2 other people that I found on google, so I am inclined to think tha 3M has changed something in their manufacturing process, I think it very odd that this problem is manifesting itself at this time in different locations.
I have been using this product for sometime, and the problem of filters turning very dark did not exist when I started using this product
Posted on Feb 03, 2010
You definitely need to clean your air handler and your outdoor unit as well. If you are not sure on how to proceed, call in a pro. they always have special deals this time of year.
Posted on Jul 02, 2009
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Posted on Jan 02, 2017
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