What values should I look for when buying an air purifier?

　　1. How much is the CADR of the machine? CADR is an important criterion for measuring the ability of an air purifier to remove particulate matter. CADR refers to Clean Air Output Ratio. In the unit of m/h, that is, the volume of clean air that can be output per hour. Generally speaking, the higher the CADR value, the better the purification effect.

　　The applicable area and CADR algorithm are: applicable area=(0.07~0.12)*CADR

　　For example, my air purifier X8 particulate matter CADR1500m/h, the applicable area is between 105㎡-180㎡. The CADR value of formaldehyde is 1000m/h, and the applicable area is between 70㎡ and 120㎡. See this formula to calculate whether the applicable area of the machine you want to buy is false.

　　2. What is the CCM value of the machine?

　　The current new national standard definition: when the CADR value decays to 50%, the total weight of the accumulated purification pollutants (particulate matter or formaldehyde), the unit is mg. CCM stands for pollutant purification ability. Only a high CADR value does not mean that the air purifier is effective. Only when the CCM is also high can it prove that the air purifier not only has fast purification efficiency, but also has strong purification ability. The network life is also longer.

　　3. How many decibels does the machine run?

　　The noise reference of the air purifier is as follows: 40-60dB: normal conversation sound 50-53dB: washing machine working sound 60-80dB: 10 meters away Purifiers are home appliances that need to be turned on for a long time, and comfort must be considered.

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