Air purifiers for asthma, 21-25 m2 room, True HEPA, CADR rating 300-399 m3/h
An air purifier for asthma relief must be capable of trapping small particles such as pollen, pet dander, pollution and dust and be powerful enough to drag all of the air in the room through the filtera minimum of 5 times an hour (ACH) for it to be genuinely effective. To get around 5 air changes per hour in your room measuringbetween 21 and 25 m2you need an air purifier with a clean air delivery rate (CADR)in the range of 300-399 m3/h.
To get the maximum benefit from an air purifier it should have aTrue HEPA (H13) or medical-grade True HEPA (H14)filter.
Below is the selection of suitable air purifiers tailored to meet your needs and sorted by price in ascending order.