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How noisy are the Filtrete room air purifiers?

April 26, 2017air purifiers filtrete room

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How noisy are the Filtrete room air purifiers?

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Decibels are a subjective measure of noise level. The higher the number, the louder it is. To give an example of noise level – a typical fridge may be around 50 decibels. A change in 2 decibels is generally noticeable to the human ear.