Best Air Purifiers for Allergies and Pollen
40 match, ranked by overall score. Updated October 18, 2026.
Strong CADR per dollar with app and auto mode; very quiet on low.
Large-room Winix with app control and a heavy carbon filter at a mid-range price.
Large-room CADR from a light, efficient unit; short filter life raises running cost.
Quieter and more efficient than the 211+, with app control.
Medium-room Blueair with very low power draw and app.
Very efficient CADR per watt; filters are rated for only six months.
Large-room Winix with heavy carbon and app; slightly costlier than the T810.
Efficient medium-room unit; superseded by the 311i Max.
Two-sided filtration with a real carbon layer; filters cost more than most.
The 5500-2 without the remote and with a lighter carbon filter.
Adds a washable prefilter and a pet-hair mode to the Core 400S formula.
High CADR at a quiet 52 dB maximum; annual filter cost is among the highest here.
5500-class performance with app control.
Airmega 400 with Wi-Fi app control.
A pellet-carbon filter you can wash, strong CADR, and a low street price; PlasmaWave can be switched off.
Levoit's flagship with a laser sensor and directional vent; expensive for the CADR.
Quiet at full speed and well built; price per CADR is high.
Twin-filter unit with very high claimed CADR; not AHAM listed.
The long-running benchmark: strong CADR for the price, a real auto mode and cheap annual filters.
Winix's 360 sq ft platform in a taller cabinet with Wi-Fi.
Same internals as the Mighty in a square housing with a square filter.
Quiet for its CADR; the 930 sq ft claim is at 1 air change per hour, so treat it as a 370 sq ft unit for allergies.
High CADR, simple one-button operation, fabric prefilter; no auto mode and short filter life.
211+ with a particle sensor and auto mode.
Medium Alen with the same quiet motor; lifetime warranty with filter subscription.