- Focus on the purification effect
There are many air purifiers on the market, which mainly absorb haze PM2.5, second-hand smoke and other air pollution, but their formaldehyde removal function is not excellent. If you are decorating a new house to remove formaldehyde, be sure to choose a professional formaldehyde removal air purifier with formaldehyde removal technology that can display formaldehyde content.
- Can the formaldehyde content be monitored and displayed?
It is also very important whether the formaldehyde-removing air purifier can monitor formaldehyde in real time. This function is very practical. However, most purifiers sold on the market do not have formaldehyde value (HCHO) display.
- Pay attention to whether it has sterilization function
Our children are allergic and prone to hives when the seasons change, but they will get better as long as the purifier is turned on, so I will pay special attention to the sterilization performance.
- The filter is the core of the purifier
HEPA filters are currently one of the most popular technologies used in air purifiers. Electrostatic electret filter technology uses electrostatic electret non-woven fabric to collect dust. It is an upgraded version of HEPA technology. This technology can effectively block particulate pollutants larger than 0.1 micron, such as dust, dander, pollen, bacteria, etc., and has low impedance, energy saving and environmental protection, high safety, and good purification effect, so it is loved by manufacturers.
Currently it is mainly used in car air purifiers and some large hotels.
- Energy efficiency level and noise
Generally speaking, air purifiers should be first-class energy efficient, and the lowest operating noise level should not exceed 35dB and the highest level should not exceed 70dB.
6. Clean air volume (CADR)
There may not be many people who know the term air cleansing capacity. Generally speaking, the larger the air purifier, the larger the purifying area and the more purification cycles. Refer to the industry standard for 5 cycles per hour.
The calculation of the air clean volume can be as follows. If the clean air volume of an air purifier is 450 cubic meters per hour, and the height of the room is 3 meters, then the applicable area of the air purifier is 450 divided by 5 divided by 3 and finally obtained Conclusion of 30 square meters.
So when you buy an air purifier, you should consider whether the clean area of the air purifier can match the area of the room. If the clean area is smaller than the area of the room, the expected cleaning effect may not be achieved.
Question: Why does the air purifier have a sour smell problem?
Many friends ask why the air purifier has a sour smell after being used for a period of time. What is this smell? what is the reason?
In fact, the acidification of purifiers is not limited to a specific model or brand. In fact, most of the aldehyde-removing purifiers that don’t produce acid are almost useless.
In fact, most of the sour smell we smell every day is acetic acid (acetic acid). The source of the sour smell is mainly caused by the activated carbon of the filter absorbing a large amount of formaldehyde and TVOC to form acetic acid. If you want to avoid it as much as possible, there are two ways:
- Purchase an air purifier without an activated carbon filter, which means that the formaldehyde/odor removal capability of this purifier is 0, and it is suitable for households that only remove smog and bacteria;
- Keeping the air purifier running is an important way to prevent activated carbon from becoming sour. In addition, dry it in time. When the weather is fine, taking out the filter to dry can solve the problem to a certain extent. In addition, if you need to use a humidifier at home, it is recommended to use a mist-free humidifier to prevent the activated carbon component from getting wet.
In general, if the purifier you use has sufficient activated carbon, strong aldehyde removal performance, and absorbs a lot of formaldehyde and TVOC, the problem of acidification will inevitably occur.
