How to choose an air purifier? Just look at the following indicators: purification performance (CADR), filter life (CCM), purification energy efficiency, and noise.
CADR: Refers to the amount of clean air, that is, the volume of air that can be purified per unit time. The higher the CADR value, the higher the purification efficiency of the purifier.
CCM: It refers to the cumulative purification amount. The higher the CCM value, the longer the life of the filter element. Purified solid and purified formaldehyde are two sets of CCM standards. Purified solid particles are divided into P1-P4 levels, generally P4, and gaseous CCM values are divided into F1-F4 levels, generally F4.
Noise: The noise standard varies with the CADR value, and it refers to the volume produced by the air purifier when it reaches the maximum CADR value. When CADR≤150m/h, the machine noise standard should be ≤55dB; when 150<CADR<300m/h, the machine noise standard should be ≤61dB; when 300<CADR≤450m/h, the machine noise should be ≤66dB ; When CADR>450m/h, the machine noise should be ≤70dB. The noise value is of course the lower the better.
