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  2. The best air purifiers of 2025 - AOL

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

    We put the best air purifiers from Lenovo, Honeywell, Winix, and more to the test to see which held up best (and actually purified the air for you). ... CADR Ratings are 100 for smoke, 106 for ...

  3. 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.

  4. Clean air delivery rate - Wikipedia

    en.wikipedia.org/wiki/Clean_Air_Delivery_Rate

    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 fraction of particles (of a particular size distribution) that have been removed from the air, multiplied by the ...

  5. 5 top-rated and lab-tested air purifiers - AOL

    www.aol.com/news/5-top-rated-lab-tested...

    We select top-rated and staff recommended air purifiers from ... decibel levels and clean air delivery rate (CADR). ... It also has a 4.7-star average rating from over 30,000 reviews on Amazon. ...

  6. Minimum efficiency reporting value - Wikipedia

    en.wikipedia.org/wiki/Minimum_Efficiency...

    Two proprietary scales are used to rate sub-HEPA air filters. The Home Depot scale is known as filter performance rating (FPR), and is reduced from a 1–10 scale to only 5, 7, 9, and 10. It measures ability to capture large particles, small particles, and weight change over the lifetime of the filter.

  7. The 6 best air purifier deals — including a fan favorite with ...

    www.aol.com/lifestyle/air-purifier-11-000-5...

    Coming in with over 18,000 five-star reviews on Amazon is the Coway Airmega AP-1512HH (aka the Coway Mighty). There is good reason for its popularity. Its four-stage filtration system can capture ...