Keep the window closing or opening when use the air cleaner

The technological principle of the air cleaner looks be like simple, it is not easy.
In addition to want to consider the problem of aperture of filter and the particulate matter, the size of the wind fan, filter resistance, noise problem, are the factors.
But when you use the air purifier you need open the window or close the window?
The general air purifier need to use in an enclosed space, achieve partial close space.


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