Air Pro vs 5500-2
A side-by-side readout for min noise.
Understanding min noise
Min noise is a numeric spec measured in dB. On this metric, lower values are generally better — smaller, lighter, thinner, or less demanding usually translates to a more comfortable or more efficient product. When comparing two products, focus on the percentage gap rather than the raw delta: a 200-unit lead means something very different at the low end of the range than at the high end. Pay attention to the unit, too — manufacturers sometimes quote peak or burst figures that are not sustained in real-world use. Cross-check the published number against independent measurements where possible, especially for performance and battery claims. Finally, remember that a single spec rarely tells the whole story; the Mars Score weighs min noise together with the rest of the spec sheet so one outlier doesn't distort the verdict.
This matchupAir Pro's 30dB is roughly 11% more than 5500-2's 27dB (a 3dB gap). Lower is better here, so 5500-2 takes the lead in real use.
Other specs on this comparison
See the full Air Purifiers category for all products ranked by Mars Score.