
Aranet4 Indoor Air Quality Monitor, Wireless CO2 Detector for Home, 4-year battery life
$189.00Verified
No. 14 in Indoor Air Quality Meters









True HEPA Filter, Quiet Sleep Mode, Washable Pre-Filter, AHAM Verified, PM2.5 Monitor, for Pet, Dust, Smoke & Pollen
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6 attributes, in the retailer’s own words.
AHAM’s “two-thirds” rule is to choose an air cleaner whose smoke CADR rating is two-thirds the size of the room’s area; its example is that a 200 square foot room needs a smoke CADR of at least 132. For wildfire smoke AHAM recommends a smoke CADR equal to the room’s size in square feet.
The EPA says the CADR rating system is for particles only, and that to filter gases you need an activated carbon filter or another filter designed to remove gases. It also says ozone generators sold as air cleaners intentionally produce ozone and that no federal agency has approved them for occupied spaces; it says the California Air Resources Board and AHAM maintain lists of air cleaners tested and shown to emit little or no ozone.
Sources: AHAM, Tips for Choosing the Ideal Portable Room Air Cleaner · EPA, Guide to Air Cleaners in the Home
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$189.00Verified
No. 14 in Indoor Air Quality Meters

$129.99Verified
List Price $159.00
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No. 2 in Window Air Conditioners


$339.00Verified
No. 63 in HEPA Filter Air Purifiers

$69.95Verified
List Price $79.99
No. 3 in Floor Fans

$19.99Verified

$124.00Verified
No. 35 in HEPA Filter Air Purifiers

$47.99Verified
No. 22 in Household Tower Fans
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$169.96Verified
List Price $189.99
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No. 1 in Home Travel-Size Air Purifiers

$179.99Verified
List Price $199.99
No. 2 in Home Travel-Size Air Purifiers

$39.99Verified
No. 4 in Home Travel-Size Air Purifiers