Is the air purifier useful? I'm going to buy a platform to remove fog and haze, but the weather in Tianjin is really unbearable.

With the arrival of "Golden September and Silver 10" in the traditional sales season of home appliance industry, enterprises have released new products in advance in an attempt to seize market opportunities, especially the air purifier market. Recently, Samsung, Midea, Sharp, Wan Jiale and other companies have released related new products. Just when the enterprise just finished promoting the new product for sale, the domestic monitoring agency released a report that the air purifier had poor effect in in addition to formaldehyde. For a time, who is in charge of the purification effect of the air purifier has once again become the focus of attention in the industry.

Monitoring organization:

Except for formaldehyde, it has little effect.

In view of the phenomenon that many air purifiers in the market nominally have a formaldehyde removal rate of 99% and a PM2.5 removal rate of 99%, the National Indoor and Indoor Environmental Protection Product Quality Supervision and Inspection Center (hereinafter referred to as the "Environmental Inspection Center") recently released the first performance evaluation results of air purifiers. The results show that the formaldehyde removal effect is poor and the PM2.5 removal effect is good.

It is understood that on July 23 this year, the Environmental Inspection Center purchased air purifier products 10 according to the sales ranking of self-operated products of an e-commerce sales platform, including 7 foreign brands such as Du Ya, Panasonic and Bruyal, and 3 domestic brands. According to the national standard "Air Purifier" (GB/T18801-2000,

The national standard "Air Purifier" clearly stipulates that the performance index of the air purifier is "clean air volume" (CADR), and the unit is m3/h ... The air purifier has a corresponding CADR value for each air pollutant that can be removed. CADR is also regarded as the main parameter to evaluate the real purification ability of air purifier. The larger the value, the stronger the purification ability.

The test report shows that seven of the 10 air purifiers have the function of purifying formaldehyde. According to the results of CADR test, none of the seven purifiers has a significant effect, including the similar product AC4074 of Philips AC4076, which is called high-efficiency in addition to formaldehyde. The best purifier is in a room of 15 square meters, and it is turned on 1 hour. Theoretically, formaldehyde in the air cannot be reduced by 50%, and the CADR value is only 29 m3/h. ..

Guangsheng Song, director of the National Indoor Environment and Indoor Environmental Protection Product Quality Supervision and Inspection Center, concluded that the in addition to formaldehyde effect claimed by most air purifiers was almost useless. "The CADR value of general pollutant removal is above 60m3/h, and the effect is remarkable. When formaldehyde is released indoors, the actual effect will be worse. Most air purifiers claim that the effect of in addition to formaldehyde is only a selling point. " Guangsheng Song said.

In addition, the test results also show that the effect of removing PM2.5 by air purifier has little correlation with factors such as price and domestic and foreign brands. Among them, the price of foreign brand Bruyal air purifier is as high as 4,000 yuan, which is also among the best in the sales rankings of major e-commerce websites, but the test data except PM2.5 ranks fourth, with the worst cost performance.

Enterprise:

The key point is to remove PM2.5

The performance test of air purifier shows that the effect of in addition to formaldehyde is poor. An industry insider admitted to beijing business today today that the in addition to formaldehyde performance of air purifier products has indeed been weakening in recent years, but it is not worthless. The reason is that in recent years, air smog and PM2.5 are serious problems, and the purification effect of air purifier products is focusing on PM2.5.

Zou Hua, head of TCL air purifier, told beijing business today reporter today that relatively speaking, the in addition to formaldehyde effect of air purifier products is better, but the effect except PM2.5 is weaker. If the effect of removing PM2.5 is good, the effect of in addition to formaldehyde is weak. Because the filter screen thickness of the air purifier is relatively limited, there is a competitive relationship in the distribution of PM2.5 removal and formaldehyde. At this stage, no matter from the consumer's attention or the specific actual demand, the voice of removing PM2.5 is high.

It is precisely because of this resource allocation factor of air purifier filter screen that Zou Hua said that in the future, there may be functional selection products in the field of air purifiers, that is, the choice of purification function configuration of air purifiers will be given to consumers to meet the needs of different families. Consumers can choose targeted products according to their actual needs. For example, when decorating a new house, they can choose a filter that mainly removes formaldehyde, while old residents can choose a filter that mainly removes PM2.5.

Beijing business today reporter today also learned that mainstream air purifier enterprises usually use multi-layer filters to achieve air purification. For example, Sharp air purifier adopts five filters, namely pre-filter, deodorizing filter, formaldehyde filter, HEPA dust filter and humidifying filter. According to the reporter of Xiang Jing Business Daily, Mr. Zhang, a staff member of Sharp Air Purifier, the core purification of the product is mainly in addition to formaldehyde filter and dust filter, one for formaldehyde and the other for tiny particles including PM2.5. This multiple design is to better purify formaldehyde and PM2.5 at the same time. However, due to different environmental factors, it is difficult to fix the frequency at which users change filters.

In fact, many consumers don't buy air purifier products not because there is no demand, but because air purifiers are different from other household appliances, and it is difficult to see their actual functions intuitively. In this regard, Sharp recently launched the latest intelligent air purifier product KI-CE60-W. In addition to Sharp's unique "clean ion group space purification technology", it is also equipped with intelligent voice function to inform users of the invisible air condition and usage tips through intelligent voice prompt function.

Expert:

Don't kill people with sticks.

For a time, in addition to formaldehyde's poor effect became the focus of media attention. In this regard, industry experts generally believe that the use of air purifiers to improve indoor air quality needs to be affirmed. Considering the purification ability and actual environment of the product, its purification effect is limited. Consumers should not blindly worship air purifiers, do not deify them, but at the same time do not kill them with a stick.

Liang, a home appliance analyst, said that there are many kinds of air purifier products on the market at present, reaching hundreds, but the prices are often very different, ranging from tens of yuan to tens of thousands of yuan, among which the purification effect of products is definitely very different, and the purification function of the whole industry cannot be denied just because some products have poor in addition to formaldehyde effect.

Hong Shibin, executive director of china national household electric appliances commercial association Marketing Committee, said that although the development of air purifiers in China is not long, from a global perspective, air purifiers are actually a relatively mature industry. As early as the 1980s, air purifiers began to turn to the civilian market. After more than 30 years of development, Sharp, Philips, Honeywell and many other giants are engaged in production research and development all over the world. To some extent, it can be explained that the air purifier is effective and valuable for users.

Besides the poor test data in in addition to formaldehyde, some industry observers pointed out that this should be caused by market orientation. Compared with fine particles such as PM2.5 from outdoor air, indoor formaldehyde comes from the volatilization of furniture, paint and other products. Closing the doors and windows indoors and opening the air purifier can effectively purify PM2.5, but for formaldehyde, because of its continuous production, the purification effect will not be much better, or even worse than opening the window for ventilation.

Secondly, at this stage, fine particulate matter PM2.5 and indoor pollution in foggy days are the most concerned issues for consumers. The formaldehyde problem is mainly concentrated in newly renovated users and new house users, and the user population is relatively small.

Regarding the future development of air purifiers, Liang pointed out that government departments should force air purifier manufacturers to refine the labeled purification indicators. For example, when the air purifier is marked with PM2.5 and formaldehyde removal rate, it must be marked with how long and how big the data is. At present, many enterprises in the market are scratching the ball. Although the removal rate of various pollutants is marked as 99% or even 99.9% and 99.99%, it is not actually stated in what environment and for how long. This indicator has no practical reference value for consumers.