I saw that the facilities in the new 7-day hotel room are quite good, and there is an air purifier in the room. Is it true that people live there?

First, whether the effect of the air purifier is obvious depends on whether the outdoor air pollution is serious. If the outdoor air is polluted for a long time, then when you stay outside for a long time, you will feel the effect is obvious when you get home. Or stay indoors for a long time, and suddenly go outdoors with serious pollution, most people will feel uncomfortable breathing.

Second: When using air purifier or fresh air equipment, be sure to close the doors and windows and keep the room relatively sealed. Some people may not pay attention to the fact that when using the air purifier, the doors and windows are not properly closed, or the doors are frequently opened and closed. I actually tested it when the indoor PM2.5 dropped to 0. If the door is opened, indoor pm2.5 will quickly rise to the same state as outside the door within 10 second.

Third: the air volume of the air purifier does not match the room area. In reality, no matter how tightly we close the doors and windows, there will always be a passage in the room that communicates with the outside world. Such as air conditioning holes, door cracks, window cracks and so on. These are the channels for the exchange of outdoor air and indoor air. At one time, the purification capacity of the air purifier (that is, cadr value, which can be simply understood as the amount of clean air that can be generated per hour) did not match the indoor area. Will affect the use effect.

Fourth, the air volume of the air purifier is directly proportional to the noise, and the greater the air volume, the greater the noise. If you are equipped with a 300-air machine in a 30-square-meter bedroom, although the purification effect is useless. However, you can hardly rest at night. Or you have a machine with 100 air volume in the living room of 80 square meters, so the purification effect is basically difficult to guarantee.

So when choosing, you must choose the machine that suits you. As for the actual effect of the current air purifier, it will basically have an effect. The difference lies in the service life of the filter element and the purification grade of the filter element. Simply put, the thicker the filter element, the better the effect and the more expensive it will be.