CleanAir Index Brand Review Overview

Coway's own spec sheet lists coverage of 1,800 sq ft at only 1 air change per hour. At the 4.8 air changes per hour...

Coway's spec sheet states 3,120 sq ft at 1 air change per hour and 1,560 sq ft at 2 air changes per hour - the two...

Levoit's official listing quotes the room figure at 1 air change per hour (1,718 sq ft), which is about 358 sq ft...

Levoit states its 3-stage filtration captures at least 99.97% of 0.3-micron particles, and quotes 1,862 sq ft at 1...

The clearest spec sheet of the six: Blueair publishes room size at 4.8 air changes per hour directly (674 sq ft)...

Small-room unit with the same 4.8 ACH basis published directly (259 sq ft). Draws 20 W, the lowest of the six, and...