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  2. These Small Room Air Purifiers Will Have You Breathing Easy - AOL

    www.aol.com/small-room-air-purifiers-breathing...

    Most air purifiers advertise the square footage or air cycled per hour—essentially the coverage you get from an air purifier in 1 hour of use (identified as "room coverage" above).

  3. The best air purifiers of 2025 - AOL

    www.aol.com/lifestyle/best-air-purifiers...

    One of tallest (nearly 24 inches) and heaviest (17.5 pounds) air purifiers tested, the Winix 5500-2 Air Purifier is ideal for small-to-medium rooms (up to 360 square feet), with a True HEPA filter ...

  4. The 5 best air purifiers for smaller spaces that actually ...

    www.aol.com/news/4-best-air-purifiers-smaller...

    Keep the air in your home germ, pollen and odor-free with these top air purifiers. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways ...

  5. Corsi–Rosenthal Box - Wikipedia

    en.wikipedia.org/wiki/Corsi–Rosenthal_Box

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

  6. The Best Air Purifiers We're Snap-Buying as the Air Quality ...

    www.aol.com/lifestyle/best-air-purifiers-were...

    These top-reviewed air purifiers feature HEPA filters and have high star ratings at top retailers like The Home Depot and more. Shop the best air purifiers now!

  7. Air purifier - Wikipedia

    en.wikipedia.org/wiki/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 .