How to buy Air filters

Before choosing an air purifier, we need to make a clear judgment on our own needs. After all, it also a family expense. After confirming that our family needs it, we will continue to look down.

1. What kind of family needs to buy an air purifier?

(1) The house has just been renovated, and harmful substances such as formaldehyde and toluene need to be purified.

(2) The air quality is relatively poor, and there are many smog days.

(3) Pursue a high-quality life and focus on a healthy life.

(4) There are people in the family who are sensitive and unsuitable to dust and pollen, especially allergic to pollen.

(5) Pets are kept at home, and the room has a peculiar smell, which needs to be deodorized and sterilized.

(6) Those with young children or the elderly at home pay more attention to health and require higher air quality.

Finally, there is a family that has conditions at home and wants to improve the taste of life by purchasing these products.

2. What types of air purifiers are there? What kind of air purifier should I choose?

(1) The first category is to use a fan to draw air into the machine. After passing through the built-in filter, it can filter dust and bacteria and eliminate odors. This is a passive suction purification.

(2) The second category is that the air purifier releases purification and sterilization factors into the air to inhibit bacteria, sterilize and purify impurities. This is an active purification.

(3) The third type is compound purification, which is a combination of active and passive. The passive is responsible for "hands-on" to achieve basic elimination and purification, and then actively purify dust, odor, and bacteria in an all-around way.

Therefore, the best choice of air purifier is to choose a composite smart air purifier, which is more efficient, smarter, and does not add congestion. This is the basic function of a household appliance.

3. What indicators should be paid attention to when choosing an air purifier?

(1) CADR

Chinese means "clean air output ratio", which refers to the data obtained by the American Home Appliance Manufacturers Association strictly by the standard. Generally speaking, the higher the CADR value, the higher the purification efficiency of the purifier and the more efficient the air purification. Generally speaking, the higher the purification efficiency, the better, but there are some cases that the source of CADR value is not uniform. The new national standard stipulates the CADR value of air purifiers, so we should refer to the data published by third-party monitoring.

The air in the room where we live is flowing even if the windows and doors are tightly closed. Although we cannot feel it on the surface of the human body, the air in the indoor and outdoor, the kitchen and the living room, the master bedroom, and the second bedroom are all connected in series. Together, they maintain a dynamic balance. This is why someone smokes in the living room, but you can still smell it in the bedroom with closed doors and windows.

Therefore, a good air purifier will predict the balance point of the dynamic balance according to the degree of airflow to perform intelligent purification, and the purified air and the indoor air are flowed oppositely to ensure the indoor air circulation, and then achieve the purpose of complete indoor purification. , Such a purifier also maximizes purification efficiency.

(2)CCM

CCM is the cumulative amount of purification, which is the total amount of pollutants that can be removed during the entire life cycle of the filter. Simply put, it is the durability of the filter. Solid pollutants such as PM2.5 and other particulate matter, represented by P, are divided into 4 levels, from low to high are P1, P2, P3, P4, corresponding to the total weight of the purified particulate matter. Gaseous pollutants such as formaldehyde and other harmful gases are represented by F and are divided into 4 levels. From low to high, they are F1, F2, F3, and F4, corresponding to the total weight of purified formaldehyde.

The national standard stipulates that when the CADR value is reduced to half of the initial value, the filter is considered to be invalid and needs to be replaced. It is generally believed that the higher the CCM value, the longer the filter life of the purifier, which can maintain a relatively high CADR value for a long time.

(3) Filter element life

The longer the life of the filter element, the more worry-free. Because under normal circumstances, the price of a set of filter elements may be one-fifth or even one-third of the air purifier itself. For a better air purifier, the replacement of a set of filter elements is enough to buy a new entry-level purifier. Therefore, the life of the filter element also needs our attention because it will directly affect your expenditure.

Therefore, while seeing the price of the product itself, it is also necessary to add up the extra expenditure caused by the replacement of the filter element.

(4)Noise

Noise is a very important indicator. An excellent purifier will use reasonable air duct settings and better fans to control the noise at 25-35dB. This interval will not affect the sound of sleep. According to the requirements of the new national standard, the maximum noise cannot exceed 70dB. No matter what the electrical noise is, the smaller the better!

(5)Filter grade

The different grades of the purifier filter unexpectedly have different purification capabilities for different substances. Activated carbon is the most basic purification tool, but only for gaseous pollutants. The adsorption effect of the activated carbon surface is used to adsorb formaldehyde.

HEPA filter technology is currently a product that has received high attention and recognition in the market, and it mainly filters dust particles.

The filter technology of photocatalysts and cold catalysts can decompose harmful gases, such as the chemical pollution of aldehydes and benzenes in home decoration, and the effect is much better than activated carbon. The new technology represented by negative ion and silver ion technology can sterilize and disinfect, and it can also purify the air.

Finally, Let’s talk about the use of small knowledge!

(1)Can not replace the range hood.

The air purifier cannot be used as a range hood. The smoke and dust in the kitchen are very large. This will cause some corrosive gases or metal dust to damage the purifier, and it will also be prone to fire.

(2)Keep a distance from other electrical appliances, and do not blow at the same time.

(3)Remember to unplug the power if you don't use it for a long time!

(4)Pay attention to the placement

The air purifier should be more than 50 cm away from the wall. If it is an air purifier with a side air intake structure, it cannot be placed at the corner of the wall. When the air conditioner and the air purifier are turned on at the same time, the air purifier can be placed on the winding path to improve the efficiency of indoor air circulation, thereby increasing the efficiency of air purification.

(5)Do not open the air purifier if you open the window

Air purifiers can help us quickly absorb polluted air and purify the environment we live in. If we want air purifiers to work better, we must master the correct use of air purifiers, and learn to treat the air regularly. The purifier is maintained so that the service life of the air purifier can be longer.