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2. Air purifier - Wikipedia

   en.wikipedia.org/wiki/Air_purifier

   Air purifier. An air purifier or air cleaner is a device which removes contaminants from the air in a room to improve indoor air quality. These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics, and at reducing or eliminating second-hand tobacco smoke .

3. HEPA - Wikipedia

   en.wikipedia.org/wiki/HEPA

   HEPA filters are designed to arrest very fine particles effectively, but they do not filter out gasses and odor molecules. Circumstances requiring filtration of volatile organic compounds, chemical vapors, or cigarette, pet or flatulence odors call for the use of an activated carbon (charcoal) or other type of filter instead of or in addition to a HEPA filter. [20]

4. Hypoallergenic vacuum cleaner - Wikipedia

   en.wikipedia.org/wiki/Hypoallergenic_vacuum_cleaner

   A hypoallergenic vacuum cleaner is a vacuum cleaner with filters designed to retain the vast majority (ideally at least 99.97%) of particles within the vacuum system. If successful this retention would greatly reduce the amount of potential allergens in the environment in which it is used. Regular vacuum cleaners are unable to retain most very ...

5. Clean air delivery rate - Wikipedia

   en.wikipedia.org/wiki/Clean_Air_Delivery_Rate

   The AHAM-certified seal lists a rating for tobacco smoke, pollen, and dust removal, and a rating for room size. The clean air delivery rate ( CADR) is a figure of merit that is the cubic feet per minute (CFM) of air that has had all the particles of a given size distribution removed. For air filters that have air flowing through them, it is the ...

6. Corsi–Rosenthal Box - Wikipedia

   en.wikipedia.org/wiki/Corsi–Rosenthal_Box

   Corsi–Rosenthal Box. An example of a homemade unit. The Corsi–Rosenthal Box, also known as a Comparetto Cube, [ 1] is a design for a do-it-yourself air purifier that can be built comparatively inexpensively. It consists of four [ 2] or five [ 3][ 4] HVAC particulate air filters that form a cube and a box fan to draw air through the filters.

7. Air filter - Wikipedia

   en.wikipedia.org/wiki/Air_filter

   A particulate air filter is a device composed of fibrous, or porous materials which removes particulates such as smoke, dust, pollen, mold, viruses and bacteria from the air. Filters containing an adsorbent or catalyst such as charcoal (carbon) may also remove odors and gaseous pollutants such as volatile organic compounds or ozone. [ 1]