Air purifiers under $400

4 air purifiers under $400, cheapest first. Sharp FP-K50UW starts at $219.99. Dyson HushJet Compact tops the list at $349. Prices checked November 2, 2026.

Drawing of air purifier in a lit arch, with a small owl on top

Sharp FP-K50UW

Budget bedroom filtration with no app

$219.99Checked November 2, 2026

Blueair Blue Pure 311i Max

Living rooms in apartments

$229Checked November 2, 2026

Blueair Blue Pure 211i Max

Large open rooms

$349Checked November 2, 2026

Dyson HushJet Compact

Small rooms where a compact Dyson is wanted

$349Checked November 2, 2026

Under $800 (5)