Are Xiaomi air purifiers without filters useful?
Quoting the PCPOP test
Measured whether the purification effect of the Xiaomi air purifier is fake “At this time, I turned the Xiaomi air purifier to the highest level, remember that there is no filter element in the purifier at this time! A miracle happened, and the value displayed on the APP side instantly dropped to 56, The actual PM2.5 concentration is still 722μg/m3. The same phenomenon occurs in automatic gear.”
“But at this time, if I switch the purifier back to the sleep gear, the PM2.5 concentration display will explode again in an instant, indicating that the purification effect is not available, and the detection of the Xiaomi Air Purifier 2 itself does not default to the purification effective, and the indicator light Still red.”
The conclusion is:
“If the filter element is not placed or the filter element is not unpacked, it is certain that there is no purification effect. The Xiaomi purifier is still running at full speed, trying to purify the air, but the value displayed by the APP will indeed drop, which is a phenomenon that deceives users.” So It is said that a purifier without a purifying filter element is just a decoration and has no effect.