Best Value Air Purifiers (CADR per Dollar)
49 match, sorted by cadr per dollar. Updated October 18, 2026.
Budget medium-room unit; CADR is manufacturer-claimed.
Twin-filter unit with very high claimed CADR; not AHAM listed.
Strong CADR per dollar with app and auto mode; very quiet on low.
High claimed CADR for the money; not AHAM listed, and filters are short-lived.
The best-selling compact purifier; no auto mode, thin carbon, but cheap and quiet on low.
The 5500-2 without the remote and with a lighter carbon filter.
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.
Adds a washable prefilter and a pet-hair mode to the Core 400S formula.
Proven large-room CADR at a fair price; loud and power-hungry at full speed, no auto mode.
Medium CADR with auto mode at a low price; room-size claim is at 1 ACH.
5500-class performance with app control.
Compact-plus unit with a particle sensor.
Smallest Levoit with app control; no particle sensor.
Medium-room Blueair with very low power draw and app.
A pellet-carbon filter you can wash, strong CADR, and a low street price; PlasmaWave can be switched off.
Large-room Winix with heavy carbon and app; slightly costlier than the T810.
Very efficient CADR per watt; filters are rated for only six months.
High CADR, simple one-button operation, fabric prefilter; no auto mode and short filter life.
Mid-size HPA; reliable but dated, with no sensor.
Quieter and more efficient than the 211+, with app control.
Compact with a washable prefilter and auto mode.
Winix's 360 sq ft platform in a taller cabinet with Wi-Fi.
The long-running benchmark: strong CADR for the price, a real auto mode and cheap annual filters.
211+ with a particle sensor and auto mode.