German
French
Italian
Portuguese
Japanese
Korrean
Russian
How to tell if an activated carbon air filter needs to be replaced?
How to tell if an activated carbon air filter needs to be replaced?Here are some ways to tell if an activated carbon air filter needs to be replaced:Judging from the appearance - Check the color change: New activated carbon air filters are usually darker in color. As the use time increases and pollutants are adsorbed, the color of the activated carbon will gradually become lighter. When the color of the most activated carbon becomes very light or there is an obvious uneven color change, it may mean that it needs to be replaced. - Check the dust accumulation: If the surface of the filter is full of dust, hair, and other impurities, and simple cleaning (such as gently sucking the surface dust with a vacuum cleaner) cannot restore its original air permeability, then it may need to be replaced. Judging from performance indicators - Test the pressure difference: There are usually pressure monitoring points at the front and back ends of the air filter. As the filter is used for a longer time, the activated carbon inside it will gradually become blocked, resulting in increased resistance when air passes through the filter, and the pressure difference will also increase accordingly. When the pressure difference exceeds the limit specified by the equipment (usually clearly marked in the equipment manual, such as exceeding 1.5-2 times the initial pressure difference), you need to consider replacing the filter. - Detection of purification effect: - Air quality detection equipment: Use professional air quality detection instruments, such as formaldehyde detectors, PM2.5 detectors, etc., to regularly detect the quality of air treated by filters. If the concentration of pollutants in the air treated by the filter is found to be significantly increased and exceeds the acceptable standard range (for example, the indoor formaldehyde concentration exceeds 0.1mg/m³, the PM2.5 concentration exceeds 35μg/m³, etc.), it indicates that the purification effect of the filter has decreased and needs to be replaced. - Subjective feeling: judged by subjective feelings such as smell and vision. For example, if you can still smell obvious odors (such as smoke, chemical odors, etc.) in the area where the filter is used, or if you feel that the air quality has not been significantly improved (such as there is still a pungent smell in a newly renovated room), this may mean that the filter has failed and needs to be replaced. Judging from the usage time - Refer to the normal usage time: According to the usage environment of the filter and experience, in a moderately polluted environment, the activated carbon air filter may need to be replaced after 6-12 months of use; in a heavily polluted environment, it may need to be replaced after 3-6 months; and in a lightly polluted environment or with low frequency of use, it may need to be replaced after 12-24 months. However, this is only a rough reference, and it needs to be determined in combination with other judgment methods. |
