Best Smart Air Purifiers with App and Auto Mode

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.

Adds a washable prefilter and a pet-hair mode to the Core 400S formula.

5500-class performance with app control.

Airmega 400 with Wi-Fi app control.

Levoit's flagship with a laser sensor and directional vent; expensive for the CADR.

Tiny bedroom unit with auto mode and app; fine for a small room, not a living room.

Quiet at full speed and well built; price per CADR is high.

Winix's 360 sq ft platform in a taller cabinet with Wi-Fi.

Core 300 plus a PM2.5 sensor, auto mode and app.

Compact with a washable prefilter and auto mode.

Medium Alen with the same quiet motor; lifetime warranty with filter subscription.

HPA300 internals with a particle sensor, auto mode and app.

Rabbit Air's larger unit with app and a laser sensor; premium price.

Premium build and very quiet low speed; CADR per dollar is poor.

Sensor-heavy smart unit with swappable filter types; filters are expensive.