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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 ...
How we picked the best air purifier. ... decibel levels and clean air delivery rate (CADR). ... It also has a 4.7-star average rating from over 30,000 reviews on Amazon. It has four speed modes ...
We tried top-rated, lab-certified air purifiers from brands like Blueair, Instant and more. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to ...
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 ...
They found that this design's "effective clean air delivery rate [CADR] increase[d] with fan speed, from about 600 to 850 ft 3 min −1 (1019 to 1444 m 3 h −1)". [3] Based on the cost of their design, this output amounted to $0.08 per CADR, or roughly ten times cheaper than commercial air purifiers, with quieter operation.
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.