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#CADR 2 posts

Air Purifier Sizing: Why 130% Coverage Can Fall Short

The '30-pyeong' label on a purifier is not your home's floor area — it is rated coverage derived from CADR. For the same 33㎡ living room, Korea's 130% rule asks for CADR 5.6 while US guidance asks for 10.1.

Home AppliancesJul 31, 20266 min

Air Purifier Coverage Calculation — The 1.5x Rule and Reading CADR

Air purifier pyeong ratings differ by manufacturer and can't be trusted as-is. The real benchmarks are the KS-regulated Standard Usage Area and CADR. This post explains both, why 1.3–1.5x your actual room size is recommended, and provides a table of figures by room size.

Buying GuidesJul 19, 20265 min