Five "indicators":
1: Purification Capacity
Purification capacity is the fundamental and core goal of an air purifier. The currently recognized standard for determining purification capacity is CADR (Clean Air Delivery Rate). The two key factors affecting the CADR value are the exhaust volume of the fan and the filtering performance of the air filter. Therefore, choose a product with a large exhaust volume and good filtering performance.
2: Power Consumption
Air purifiers are products that need to be used for a long time. Power consumption is naturally a key point that many consumers are concerned about. Clearly understand the power consumption of the product to determine whether the purchased product is an "electric monster" or suitable for normal use.
3: Noise
The same question. Air purifiers need to be used for a long time, including normal life and rest. If the purification capacity is achieved only by increasing the exhaust volume, it will directly cause another kind of pollution - noise. The noise in children's rooms should be controlled below 50 decibels. Noise has a significant impact on children's mental activities. On the one hand, it disperses children's attention during learning activities; on the other hand, prolonged direct exposure to noise can cause serious psychological problems and affect physical and mental health.
4: Humanization
Air purifiers also need normal maintenance, such as cleaning the filter and adding liquid for the humidifier function. If every family member, including the elderly and children, cannot smoothly maintain the normal use of the product, it can be determined that this product has deficiencies in humanization design.
5: Consumables
Consumables are an important component of air purifiers, and their investment is not a one-time expense. When the usage cycle reaches its limit, it is necessary to replace the filter, core, and activated carbon unit as needed, and the cost of consumables varies greatly depending on the brand. To prevent the phenomenon of "affordable but unusable", carefully calculate the consumable cost of each air purifier.
Air Purifier Knowledge Answer:
In what scenarios is an air purifier needed?
Firstly, if you are in a city where the air is constantly covered by smog, it is recommended that you purchase and continue to use an air purifier indoors. This can effectively filter out the PM2.5 pollutants from outside the air. If the air quality in your city is excellent, but your home has pregnant women, children, or the elderly, you need to equip one or more air purifiers, because the fine particles, bacteria, dust, etc. floating in the air can easily trigger respiratory diseases in children, the elderly, and pregnant women. If there are smokers in your family, it is recommended to use an air purifier, because the air purifier can filter out the smoke toxins in the air, allowing other family members to avoid the damage of second-hand smoke. In addition, new renovated houses, hospitals with polluted air, etc. all need to use air purifiers to provide cleaner air for you.
What price range is the most suitable for an air purifier?
When asked about this question, even the living experts feel helpless! Just like the most suitable price range for computers, mobile phones, houses, or even mineral water, there is no consistent answer. If several products have the same quality, then the price may be related to factors such as brand, function, etc., and the rest is up to everyone's consumption habits. This question has no consistent answer. It depends on your own calculation. Of course, no matter how much you calculate, you should buy an air purifier with good purification effect. This is our original intention, isn't it? ！
What are the functions of the filters in an air purifier?
This question is quite challenging. Take the Haier KJFA420N air purifier as an example. At that time, the Haier KJFA420N air purifier had three layers of filters, namely the pre-filter, the high-efficiency HEPA filter, and the composite catalytic differentiation filter. The pre-filter can effectively filter out larger particles such as hair, dust, and fibers from the air, with an antibacterial rate of up to 99.99% (details of other brands are unknown); the high-efficiency HEPA filter can effectively remove PM2.5 from the air, capable of filtering particles with a minimum diameter of 0.1 micrometer, with an antibacterial rate of up to 99.99%; it is worth noting that the composite catalytic differentiation filter in the Haier KJFA420N air purifier is a filter developed by Haier that integrates activated carbon, nano ceramic fibers, nano photocatalyst, and nano formaldehyde remover, which can efficiently remove formaldehyde from the air and harmful gases such as smoke and TVOC.
How can one see the filtering effect of an air purifier?
Many friends say that most pollutants in the air are not visible to the naked eye. Except in cases of particularly severe dust, how can we know the indoor air quality at that time? Actually, this question is not difficult to solve. On the one hand, there are dedicated air quality detection instruments; on the other hand, the air quality indication devices equipped on high-end air purifiers, such as the light strip on the Haier KJFA400F air purifier, will change color according to the air quality: excellent air quality is shown as green, normal as yellow, and poor as red.
Does an air purifier have other functions besides purifying the air?
This question is quite good! When purchasing an air purifier, the main intention is to filter out pollutants in the air, but at that time, air purifiers not only have the function of air purification, but also have functions of air freshness, such as the air freshening function of the Haier KJFA400F air purifier, which adds the content of negative ions in the air to increase the oxygen content in the human blood, making people feel refreshed; the nano water ion technology in the Haier KJFA420N air purifier can achieve moisturizing and hydrating effects by continuously releasing nano water ions into the air, etc.

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