Are you still worried about air quality issues? Air quality can be very poor, especially in foggy weather. In this case, air purifiers have become a necessity in many homes, offices, and public places. Here are five things I want to share with you so you can make a more informed choice when purchasing an air purifier.
Ⅰ. What is an air purifier?
Air purifiers, also known as “air cleaners”, air fresheners, and purifiers, are decoration pollution that can adsorb, decompose, or transform various air pollutants (generally including PM2.5, dust, pollen, odors, formaldehyde, etc.), bacteria, allergens, etc.), products that effectively improve air cleanliness are mainly divided into household, commercial, industrial, and building uses.
Ⅱ. How an air purifier works？
The air purifier is mainly composed of motors, fans, air filters, and other systems. Its working principle is: that the motor and fan in the machine circulate the indoor air, and the polluted air passes through the air filter in the machine to remove various pollutants. Or adsorption, some models of air purifiers will also install a negative ion generator at the air outlet (the high voltage in the negative ion generator generates DC negative high voltage during operation), which continuously ionizes the air and produces a large number of negative ions, which are sent out by the micro fan. Form negative ion airflow to achieve the purpose of cleaning and purifying the air.
Ⅲ. A few key factors in choosing the right air purifier
Purification energy efficiency (mainly CADR value, CCM value)
Look at the CADR value
The higher the air purification efficiency, the higher the value represents the higher purification efficiency.
No need to pursue a high CADR value, because the air can not be purified across the room; according to the actual use of the area can be selected.
Conversion formula reference: CADR value > maximum room area * 10
| Usage area | Within 21m² | 21-36m² | 42-72m² | 63-108m² |
| Required CADR value | Below 300m³/h | 300m³/h | 600m³/h | 900m³/h |
Look at the CMM values
The ability of the filter to adsorb pollutants during the use cycle, the larger the value, the longer the life of the filter.
The new national standard stipulates that the CMM value of air purifier products should be at least F4/P4.
| Grade | Solid State CCM Value | Grade | Solid State CCM Value |
| P1 | 3000-5000mg | F1 | 300-600mg |
| P2 | 5000-8000mg | F2 | 600-1000mg |
| P3 | 8000-12000mg | F3 | 1000-1500mg |
| P4 | Above12000mg | F4 | Above 1500mg |
Filter types and levels
Filter types
The filter is the core component of the air purifier. It directly determines which pollutants the air purifier can remove and how effective it is. Common filters on the market include the following:
| Primary filter | Intercepts large pollutants such as hair, willow, dust, etc. |
| HEPA filter | Mainly used to filter particulate pollutants, the higher the grade, the higher the filtration precision. |
| Desensitizing factor | Equipped with de-allergenicity factor coating to actively kill allergens on the surface of the filter cartridge. |
| Modified activated carbon | Adsorption of indoor odor, TVOC, and other harmful gases |
| UV-C High Power UV Lamps | 12 high-power lamp beads to kill bacteria, viruses, etc. inside the machine |
| X-wave Honeycomb Activated Carbon | Equipped with amino-based active materials to adsorb and decompose formaldehyde. |
| photocatalyst | Decompose formaldehyde, toluene, and other harmful gases |
The more types of filters that can be used for different pollutants in the air to purify the purification effect are more powerful, and a single filter can only be used for part of the pollutants purification.
Filter levels
Air purifier filter grades are mainly concentrated between H11-H13, where H12 has a filtration effect of up to 99.5% and H13 has a filtration accuracy of up to 99.97%.
| HEPA filter level | Filtration rate |
| H11 | >95% |
| H12 | >99.5% |
| H13 | >99.97% |
Therefore, it is recommended to choose H13 grade filters.
Energy consumption and energy saving modes
Air purifiers that run for long periods consume a certain amount of electricity, so energy consumption is one of the important factors to consider when purchasing such a product. Choosing energy-efficient products is especially important to reduce your electricity bill. Many modern air purifiers not only have an energy-saving mode but also an automatic mode. These smart features allow the purifier to automatically adjust its operating status based on real-time air quality. In this way, the air purifier can not only ensure a good purification effect but also achieve effective saving of electrical energy.
In addition, by rationally arranging energy-saving measures such as on and off timing and proper placement, the energy consumption of air purifiers can be further reduced, resulting in a more environmentally friendly and economical air purification solution.
Noise level
Generally speaking, noise between 35-60dB is more suitable! Choose 35db in sleep mode so that it doesn’t affect your rest.
The amount of noise is related to factors such as the fan of the air purifier and the airflow wind resistance. When choosing an air purifier, attention should be paid to its maximum and minimum operating noise, and air purifiers with silent or smart modes should be selected.
Selection of appropriate working modes and functions
Different working modes and functions have different characteristics and applicable opportunities. By selecting suitable working modes and functions, you can improve the effectiveness and convenience of using your air purifier.
| Automatic mode | Automatic mode means that the air purifier automatically adjusts the airspeed and operation time according to the changes in indoor air quality to achieve the best purification effect.The automatic mode is suitable for daily use without manual intervention, saving worry and effort. |
| Sleeping mode | The sleep mode is when the air purifier reduces the wind speed and noise at night or during rest to ensure a quiet and comfortable sleeping environment.Sleep mode is suitable for use before going to bed or during lunch break and will not affect sleep quality. |
| Timer mode | Timed mode means that the air purifier can be set to schedule an appointment for switching on and off, and will automatically switch on or off according to the set time.The timer mode is suitable for use before going out or returning home, which can save power and extend the life of the filter. |
| Negative Ion Mode | Negative Ion Mode means that the air purifier can release negative ions to increase the amount of negative oxygen ions in the air, improving the activity and freshness of the air. Negative ion mode is suitable for use on foggy days or when the air is dry and can improve your breathing conditions and mood. |
| Intelligent control mode | Intelligent control mode means you can remotely control the air purifier through mobile APP or voice assistant, see air quality data and working status in real time, and adjust settings at any time.Intelligent control mode is suitable for users who like technology and convenience, allowing them to control their air purifier the way they want. |
Ⅳ. Precautions for using air purifier
1. When using this equipment, keep it out of the reach of children to prevent electric shock. Keep away from fire sources during use to prevent fire.
2. The equipment should be kept away from the human body because there are many harmful gasses around it. Especially stay away from people who smoke.
3. When turning on the formaldehyde removal and ozone disinfection functions, avoid rooms with people in them. People should leave promptly.
4. When the equipment is in use, it must be more than 1m away from the wall to achieve the best purification effect.
5. It is recommended to turn on the equipment 24 hours a day to continuously improve the air quality and prevent the purification effect from failing.
6. Ventilation and doors and windows. When using an air purifier, maintain indoor air circulation. You can increase purification efficiency by closing doors and windows. However, after operating the machine for a certain period, open the window as appropriate to ventilate the machine.
7. Filter maintenance. Clean or replace the filter regularly to remove particles and harmful gasses from the air and maintain its purifying effect and service life.
8. Regularity and cleaning. To avoid energy waste and safety hazards, please adjust the wind speed as needed, clean the casing regularly, turn off the power, and unplug the power plug when not in use.
9. Used in special situations. For patients with special diseases, air purifiers should be used to treat respiratory diseases under the guidance of a doctor. Do not use it in patients with bleeding disorders.
10. Avoid direct contact. When turning on the power and using it, please avoid touching the purifier directly as the voltage may be high to prevent electric shock.
The above is what I have shared about what you should know about the purification energy efficiency, filter type, and level, energy consumption and energy-saving mode, noise level, operating mode, and function when purchasing an air purifier. I hope it will be helpful to everyone. Of course, this is just my personal experience and opinion and may not apply to everyone and all situations. Therefore, when choosing and using an air purifier, you must make the most appropriate decision based on your actual situation and preferences.