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+--- Thread: Filters turning black? (/Thread-Filters-turning-black)
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RE: Filters turning black? - unidee - 08-12-2021
My friend lives in capital town of Finland. His furnitures have similair soot. Traffic can cause that, or factory. But not in one week. So, candles and forest fires can be the reason.
RE: Filters turning black? - SleeplessinPgh - 08-12-2021
Agree with not burning candles. We put in a new sunroom with lots of windows. Someone gave us candles and we burned them for about a week, then noticed greasy streaks on all the glass. When we stopped using candles, the greasy streaks stopped.