The wrong-size air purifier runs all day and still never actually cleans your air.
What size air purifier do I need for my room?
Match the purifier's rated coverage (sq ft) to your room so it can cycle the air several times per hour. Look for an AHAM-Verifide coverage rating.
| Room | Size | Look for |
|---|---|---|
| Bedroom/office | up to 250 sq ft | 250+ (SHARP KC850U) |
| Living room | 250–350 sq ft | 341 (SHARP KC860U) |
| Open-plan | 500+ sq ft | Smart XL (KCP110CW) |
True HEPA vs Plasmacluster?
True HEPA traps 99.97% of particles to 0.3 microns; Plasmacluster is SHARP's ion tech that neutralizes odours and particles in the room. The best units use both.
SHARP's Plasmacluster line was certified the World's Leading Air Purifier Brand by Euromonitor. Shop air purifiers →
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