What is the reason for the big price difference in air purifiers and what is the difference in HEPA filter material?

What are the reasons for the wide price gap in air purifiers?HEPA filterWhat are the material differences?

In the face of the overall decline in China's home appliance market, only the air purifier has gained high speed development, which also proves that health appliances in the industry has the potential for development. However, in 2014, many emerging purifier brands to join, so that this piece of cake tasteless; air purifier prices from tens of thousands of dollars to hundreds of dollars, Internet companies into the air purifier are impacting a number of traditional home appliance brands, making foreign brands of high-priced sales model is broken.

Is this limited to the difference in price? No matter the design and workmanship is an important reference for the price. Comparatively speaking, air purifier is a fan a few filter composition, it is seemingly simple combination, but the test manufacturers in the material of the problem. HEPA is (High efficiency particulate air Filter) high efficiency air filter. Can effectively remove PM2.5 and other fine particles removal rate of 99.998%. In fact, the most commonHEPA filterThere are many different types, and their various configurations affect the purification effect.

HEPA filter rating

HEPA filters are subdivided into G1-G4, F5-F9, H10-H14, and U15-U17 according to current European ratings, and the most common in air purifiers is the H rating, which is a high-efficiency HEPA filter. The best H13-14 filters are recognized as high efficiency air filters. H13 grade HEPA filters can achieve a total efficiency of 99.95, while H14 grade HEPA filters can achieve a total efficiency of 99.995%.

HEPA filter types

HEPA filters can be divided into PP filter paper, composite PET filter paper, meltblown polyester nonwoven fabric and meltblown glass fiber and other materials. However, these five kinds of filters, PP filter paper in the universal piece widely used in the middle and high efficiency air purifier. And glass fiber HEPA filter is relatively recognized as the best purification effect, such filters are usually used in professional-grade air purifiers.

PP filter paper

Currently on the market quite a lot of air purifiers are using PP filter paper HEPA filter, PP sub-high efficiency filter paper is made of polypropylene by a special hot melt method into a new filter material, the product acid and alkali resistance, corrosion resistance, high melting point, stable performance, non-toxic, odorless, uniform distribution, with low resistance, high efficiency, high strength, environmental protection and other characteristics. But PP filter paper made of HEPA filter service life is shorter, long-term placement will also reduce the purification performance.

glass fiber

HEPA filters made of glass fibers are recognized to achieve high purification efficiency, due to the extremely high requirements of glass fibers in the production process, resulting in a low yield rate. Similarly, the cost of this HEPA filter is also quite high, usually used in professional-grade air purifiers. At the same time, when the air purifier is not used for a long period of time, the purification effect of the glass fiber HEPA filter will be less degraded.

Composite PET filter paper

It is made of polyester resin and other materials melting and spraying, high hardness, good stiffness, corrosion resistance, high temperature resistance, stable performance, commonly used in sweepers, vacuum cleaners and other household appliances that do not require high filtration accuracy or large-scale cleaning machine above.

Most air purifiers on the market today use HEPA filters, but the same HEPA filters as they are called have different purification effects. According to the purification level as well as the production materials are determining factors, and the user in the purchase of the product is even more important to gatekeepers. But users should note that both H13-14 grade filters, with a long time to purify, the filter is contaminated with the same level of reduction, the user must be in accordance with the provisions of the time to replace the filter. Fiberglass filters with the air purifier market fire, I believe the process will be further improved.

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Three traditional ways to determine filter replacement

1, the amount of wind: when the air purifier is used for a certain period of time, the amount of wind will be weakened, which represents the filter has reached a certain degree of adsorption saturation, need to consider replacing the filter.

2, odor: air purifier in use for too long or too long without the use of odor, which represents the filter has lost a certain degree of purification efficiency, and may breed mold, this time to replace the filter in a timely manner.

3, the manual shows time: the life of the filter and the environment also has a great relationship, if the air purifier is used in heavily polluted areas, the filter life will be depleted more quickly.