An air purifier is a device which removes contaminants from the air.
These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics, and at reducing or eliminating second_hand tobacco smoke.___
Commercial grade air purifiers are manufactured as either small stand_alone units or larger units that can be affixed to an air handler unit (AHU) or to an HVAC unit found in the medical, industrial, and commercial industries.___
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