If anyone in your house suffers from asthma hayfever or similar allergies this air purifier is a must approved by the british allergy foundation it filters out up to 99 of all airborne particles and allergens including pollen pet allergens dust mites and smokewith the capacity to clear the air in a room of 72 meters square per hour the air purifier is perfect for all medium sized rooms beautifully quiet it is ideal for use in the bedroom at night helping you to breathe easy as you sle