In 2014, when haze pollution entered the public eye on a large scale, many air purification brands sprung up like mushrooms after a rain, but only a handful of them could survive to the end.
 
After comparing the new Internet brands horizontally, it is not difficult to find that the product form of Air Fort, Three Daddy and 352 is surprisingly consistent, most of them are single-flow design, lack heat exchange function, but the filtration system is very thick, comparable to high-end air purifiers. In a sense, this type of new fan is essentially a variant of the air purifier, the difference between the two is only in the air circulation mode, and the reason why emerging brands favor this type of model is also very simple, nothing more than low technical threshold, good fresh air performance, and easy to control product quality.
 
The heat exchange device is regarded as a technical barrier in the fresh air industry, and the air castle without too much technical accumulation naturally gives up to gnaw this hard bone temporarily, and its ZEN, LUX and NEX series are not equipped with heat exchange modules, although the electric auxiliary heat function is added to make up for it, but it is still recommended that users in the north, especially in the cold areas of the northeast, choose carefully.
 
ZEN and LUX are wall-mounted fresh air fans, the number on the back of the specific model represents the maximum fresh air volume, the ZEN series focuses on cost performance, the lowest priced model ZEN-160 is equipped with a four-stage filtration system, double H13 HEPA filters can calmly deal with various particle pollutants, and the price of 3000 yuan is full of cost performance; There is only one model under the LUX seriesLUX-320, which is not much different from ZEN-300 in terms of performance, but it is more attentive in workmanship and design, but the price is as high as 8000 yuan, in comparison, the ZEN-300 priced at less than 5000 yuan is undoubtedly more worth buying.
 
The NEX series is the high-end flagship of the air fort, with a price of about 10,000 yuan, which belongs to the cabinet fresh fan. Thanks to the amper internal space, the NEX series has a thicker filtration system, the H13 HEPA filter has also been upgraded to 3, and the ample air duct can effectively reduce the noise emitted during the air flow conveying, and the maximum noise of the NEX series is only 39dB(A), which is very quiet when working. However, it is a pity that the cabinet fresh air fan of the air fort still does not have a heat exchange module.
 
The area of the air fort offline service still needs to be expanded, and it currently only supports door-to-door installation in first- and second-tier cities, and the specific list can be found on the official website of the air fort, in addition, the installation service of the air fort also needs to charge an additional fee of 500 yuan.