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Air purifiers for allergies, 5-10 m2 room, CADR rating up to 100 m3/h
Allergy sufferers should use an air purifier that is powerful enough to drag all of the air in the room through the filter a minimum of 4 times an hour (ACH) for it to be genuinely effective. To get around 4 air changes per hour in your room measuring between 5 and 10 m2 you need an air purifier with a clean air delivery rate (CADR) up to 100 m3/h.