Four hard indicators for indoor air purifier purchase

　　In supermarkets, shopping malls, home appliances, and e-commerce websites, air purifiers of various brands are dazzling, with prices ranging from a few hundred yuan to tens of thousands of yuan. There are more than a dozen products of a brand with different functions and different forms, making it impossible for consumers to choose. To make the air quality at home clean, the air purifier must meet the following rigid indicators:

　　Indoor Air Purifier

　　1. Fan air volume index

　　The national standard requires that the air purifier should filter the indoor air more than 5 times in an hour, and filter it once every 12 minutes on average, if the air volume is too small. Hazardous substances cannot be decomposed sufficiently. Therefore, a room with a height of 3m and an area of about 30㎡ is generally a house. It is best to buy an air purifier with an air volume of about 90㎡/h, so that the purification effect can be achieved.

　　2. Purification efficiency index

　　Purification efficiency index. The national standard for purification efficiency (CADR) value is the main indicator for evaluating the performance of air purifiers. The higher the purification efficiency value, the higher the clean air output ratio of the air purifier and the higher the purification efficiency of the purifier. When purchasing an air purifier, consumers must look at the value of the purification efficiency. Consumers with ordinary needs should choose products with a CADR value above 120. The higher the purification efficiency value, the higher the purification efficiency of the purifier. If the indoor air quality has high requirements, it is necessary to choose products with a purification efficiency value of more than 200.

　　3. Energy Efficiency Ratio Indicator

　　Energy efficiency ratio indicator. The energy efficiency ratio is an important indicator for measuring the purification performance and power consumption of the air purifier in the national air purifier standard. The higher the value, the more energy-saving the air purifier is. For an air purifier with a good energy efficiency ratio, its energy efficiency ratio value should be greater than 3.5. However, pay attention to whether the selected purifier has a fan, because the air purifier with a fan has a relatively high purification efficiency, and at the same time, due to the need to consume energy, the energy efficiency is higher than that of a purifier without a fan.

　　4. Safety indicators

　　The most important thing to buy an air purifier is the ozone safety index. Ozone has been confirmed to be related to health hazards in the indoor air environment, and its concentration has been limited by relevant national standards. Some air purifiers using electrostatic and plasma generators will generate ozone during work, so be sure to pay attention when purchasing.

　　There are more than 100 brands of air purifiers on the market, but there is no unified standard for how to judge the pros and cons of an air purifier, which causes great trouble for ordinary consumers to buy. The most important indicators for air purifiers include the four indicators of fan air volume, purification efficiency, energy efficiency ratio and safety. Therefore, after understanding the four rigid indicators of air purifiers mentioned above, consumers should choose You need to focus on these four hard indicators to choose the most suitable indoor air purifier for you.

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