In today's increasingly serious air pollution, increasing need of people for indoor air purification, with the understanding of the way of air purification, part of the prophet who has found the purifier is very difficult to achieve the whole house air purification and cannot provide fresh air, and began to give up air purifier instead of choose and buy fresh air purification system.

        Nowadays, users have become more and more professional in choosing goods. They are no longer only concerned about the price, but more concerned about the use value of the goods themselves. So what should be judged from the pros and cons of a fresh air purification system? The following four key judgment criteria are introduced:

1, the air volume

        Air volume is an important indicator of fresh air system. According to the national first-class air quality standard, indoor air should be no less than 30 cubic meters per hour. So a family of three fresh air demand is 90 cubic meters per hour, if fresh air system air volume is lower than the standard, cannot meet the demand of living, now has excellent shield UTair + new fan air volume of more than 150 cubic meters per hour, on the market there have been new mini fan, air volume was far below the standard of 90 cubic meters per hour, purification effect also cans be imagined.

2, mesh

        Those of you who know about fresh air may often hear the term "HEPA." HEPA means High efficiency particulate air Filter. The filtration efficiency reaches 99.9% for 0.3 micron. Although HEPA filter performance is super, but two fists are difficult to match four hands, when the air pollution index is too high, a single layer of filter screen appears weak, it is recommended to use multi-layer filter screen combination, optimal shield filter using F7 initial effect + diatom crystal mesh +HEPA a total of three layers of combination structure. When selecting the machine, users should observe the thickness of the screen, whether it is easy to replace, the number of screen layers, etc.

3, noise

        Noise is an invisible indicators, the service life of machine core power is new fan motor, motor, the better the quality, the longer the new fan life, because the new fan need to open all year round, and has the higher requirements for the motor, large friction, and vibration noise when the machine runs continuously, means that the motor quality is poorer, when occurrence problem of machine shell juncture place, It is also prone to vibration noise, excellent shield selected high-quality motor, continuous operation for many years can still reach lower than the visible sound outside, basically belongs to the "silent" standard.

4, producing area

        Many users like to buy foreign products, imported new machine is more efficient, actually not at all, like Switzerland, Australia, New Zealand, etc., these countries themselves air quality is higher, the standard for new fan are naturally decreases, these countries pay more attention to ventilation and not haze pollution filtration, domestic haze pollution is serious, In these high-quality air countries fresh air purification standards moved to the domestic is not applicable, often can not reach the effective purification effect, domestic enterprises can understand the pollution degree of haze, so as to design a more in line with the domestic standard of removing haze machine!