How to use air purifier scientifically?

How to use air purifier scientifically?
According to the use of my home air purifier, let me talk about a few suggestions.
First of all, use an air purifier to close doors and windows as much as possible to reduce air circulation, so as to achieve the effect of purifying indoor air. If you use an air purifier to open the window, it cannot effectively purify the indoor air, because the indoor and outdoor air is always flowing, and the outdoor air will enter the room at all times, which is equivalent to wasting electricity. In the case of closing the doors and windows, generally about 30 minutes can make the whole room air up to the standard.
Secondly, the sleep mode can make the indoor air meet the standard when the air quality is not seriously polluted. If the outdoor air is seriously polluted, it is generally necessary to open the high-end operation.
Finally, it should be noted that the filter element must be replaced according to the prompts. Because the filter element is the most important part of the air purifier to purify the air, if the filter element is not replaced in time, it is difficult to purify the indoor air.
Recommend several cost-effective air purifiers, I hope to help:
1. Winek Air Purifier AP-A300BE1
①Formaldehyde CADR: 150m³/h, formaldehyde CCM: F4, particulate CADR: 300m³/h, particulate CCM: P4;
②Functional filter, which can absorb a variety of gaseous pollutants, smoke and life odor;
③Built-in UVC to kill a variety of bacteria in the air, and the comprehensive sterilization rate exceeds 99.9%;
④ "Primary filter layer + H13 high-grade HEPA filter layer + functional filter", H13-level filter element, the cumulative purification capacity of the filter element particles exceeds 12000mg, durable, filtration: PM2.5, pollen, pathogenic bacteria, decoration pollution pollutants, toilet pollutants, odors, hair, fines, flocs;
⑤Recommended use area 300-400 sq. Ft
2. Winek Air Purifier AP-A400WE1
①Formaldehyde CADR: 200m³/h, particulate CADR: 400m³/h
②Effectively remove odors from kitchen and bathroom, second-hand smoke, and odors from pets;
③ Strong adsorption of harmful gases or odors such as formaldehyde and toluene, and it is not easy to produce sour taste;
④Functional filter, which can absorb a variety of gaseous pollutants, smoke and life odor;
⑤Recommended use area 300-400 sq. ft
3. Winek Air Purifier AP-A500GE1
①Formaldehyde CADR: 200m³/h, formaldehyde CCM: F4, particulate CADR: 500m³/h, particulate CCM: P4;
②99.99% space sterilization rate, clean bacteria in one step, effectively reduce 7 allergens: pollen, cat allergen, dog allergen, dust mites, mold, bacteria, cigarettes;
③Release negative ions, degrade and neutralize harmful gases in the air, and settle tiny particles such as PM2.5, making the air fresh and comfortable;
④Functional filter, which can absorb a variety of gaseous pollutants, smoke and life odor;
⑤Recommended use area>400 sq. ft