Air conditioning new fried PM2.5 concept

The reporter recently visited a number of stores and found that in addition to the air purifiers, the new air-conditioner that was recently brought to market also stirs up the concept of PM2.5, “PM2.5 removal rate is as high as 99%” and “PM2.5 removal rate is over 99.9%. "The slogans are everywhere, and the prices of such air conditioners are rising. After all, is air conditioning removal of PM2.5 a real effort or a gimmick?

Market at least 4,000 yuan in addition to PM2.5 air conditioning for high-end machine

Visiting the store reporters found that the main air-conditioning PM2.5 purification function is mostly high-end models, the price of on-hook most are not less than 4,000 yuan, and some even sold for six or seven thousand yuan, and the price of counters is even more than ten thousand yuan , 10%-20% more expensive than an ordinary air conditioner of the same specification. At present, Gree, Hisense, Mitsubishi Electric, Panasonic and other brands have launched related products.

The reporter noticed that the purification technologies used by different brands are also different, such as the Gree-Almighty Wang series, which is known as “PM2.5 removal rate of 99.9% or more”. It is equipped with an independent air refresher, and passes through the air-conditioning machine. Linkage control can intelligently filter out PM2.5 in the air.

Mitsubishi Electric has introduced an air conditioner with nano-purification cabin air purification technology. It is known as “opening 2 hours can remove 60% of PM2.5, 6 hours can remove 80% of PM2.5, and 20 hours can completely remove PM2.5. ”

Hisense's "Apple Pie A8" PM2.5 air-conditioner is the first of its kind with HIFD electrostatic dust collection technology. It can efficiently remove PM2.5 in the air by releasing negative ions, active adsorption, and HIFD strong electric field interception.

Panasonic Nanoe-G new air-conditioning technology, new products, the "corona" way to produce nano-particles to achieve vacuum, antibacterial and sterilization, the so-called "3 hours to remove 99% of PM2.5."

Lack of response standard is a wait-and-see attitude for hard-wound consumers

Faced with unique technical terms, consumers are dazzled. “Now the air quality is so bad, I really want to buy an air conditioner that can remove PM2.5. However, these products are not really able to achieve the kind of effect they claim, but I’m really not sure. I can only listen to the salesperson’s The explanation is based on feelings,” said Mr. Zhang, who is choosing air-conditioning. A number of interviewed merchants also stated that at present, air conditioners that can remove PM2.5 are generally sold on the one hand because they are more expensive; on the other hand, they are all manufacturers who talk about themselves. Therefore, many consumers feel that they are Concerned, take a wait-and-see attitude.

Then, does air conditioning really remove PM2.5? Yang Dan, Marketing Department of Fuzhou Suning, also stated that theoretically speaking, air conditioners can improve air quality if they rationally use high-efficiency filtration, electrostatic adsorption, and other techniques, but can they remove PM2? .5 or how much can be removed, the current national authorities have not yet issued relevant testing standards. A certain brand of air conditioner counter sales personnel bluntly stated that there is no uniform testing and evaluation standard in the field. Therefore, unless the customer actively asks them, they generally do not actively recommend this function to customers.

Master Liu, who works in appliance repairs, told reporters that whether an air conditioner can remove PM2.5 depends not only on its internal structure, but also whether or not it has an efficient filter. “However, the higher the filter level, the more energy the fan consumes. It will also be higher and increase air-conditioning noise."

"The air conditioner's power consumption is very large. If it is only for a long time to start the air purification, it is not worth the candle. After all, the main function of air conditioning is cooling or heating. Other functions are auxiliary functions, remove PM2.5 or choose a professional purifier It is even better.” Miss Wu, who is engaged in sales of air purifiers, said that even if air conditioners with the function of removing PM2.5 are purchased, filters and adsorption devices should be replaced frequently. Otherwise air conditioners will become a source of pollution.

Mistakes in addition to formaldehyde do not necessarily eliminate PM2.5

During the interview, the reporter noticed that some promoters confused the addition of formaldehyde and PM2.5. In a supermarket in the urban area, the reporter consulted with the consumer as a purifying price of more than 4,000 yuan in addition to PM2.5 purification air conditioner, promotional staff bluntly: "Formaldehyde can be eliminated, of course, remove PM2.5 no problem It's up."

It is understood that the equipment and equipment needed to remove formaldehyde and PM2.5 from air conditioners are very different. Song Guangsheng, director of the National Indoor Environment and Indoor Environmental Quality Supervision Center, said in an interview that except that formaldehyde is mainly chemically decomposed, PM2.5 is mainly through physical adsorption.

In general, air conditioners remove formaldehyde through the installation of special modules, use the module to decompose indoor formaldehyde into carbon dioxide and water, so as to achieve the role of air purification; and remove PM2.5 mainly rely on electrostatic adsorption and other technologies to achieve, which requires the filter Because of its large size, its material characteristics are small pores and high density. Therefore, it cannot be confused with addition of formaldehyde and removal of PM2.5.