Expert advice on replacement water filters available. First, because our years of testing have proven that a good air purifier will create and maintain excellent air quality simply when allowed to run continuously on a moderate setting (versus letting the air quality, and the fan speed, fluctuate, as happens in smart modes).
That's because these particles tend to be in the air wherever there is human activity—and that's not necessarily where your return water filters registers and ductwork can capture them, according to research by the Canada Housing and Mortgage Corporation ( CHMC ).
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