How to get rid of the fan noise in the Xiaomi Air Purifier?
2 min readAfter a few years of using your smart air purifier is getting too noisy. How do you get the quiet back?
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Xiaomi Air Purifier 3 - Mi Air Cleaner - Ozone Remover - Smoke & Formaldehyde Filter - Smart Home Air Purifier - MiJIA App Control - Cube Shape
Xiaomi
Keep your home fresh and clean with the Xiaomi Air Purifier 3. It effectively removes airborne particles, including PM2.5, formaldehyde, and tobacco smoke, while also reducing odors and sterilizing the air. The MiJIA App allows you to monitor and control the air purifier from anywhere, making it the perfect addition to your smart home. With its sleek cube design, the Xiaomi Air Purifier 3 will fit seamlessly into any room.UNKNOWN
Xiaomi Air purifierXiaomi Air purifier is a wonderful device that not only passes room air through a filter that absorbs harmful substances, but also measures air pollution, temperature and humidity, and can initiate some smart home actions depending on the situation (even an alert to your smartphone when the air became smoky). It is a very good smart device, and it works almost silently.
However, after 2-3 years of using, especially at nighttime, you will start to hear a periodical fan noise. What is the reason, and how to restore silence?
Even if you set the Mi Home app to turn off the air purifier at night hours, you'll be surprised to find that you still hear this sound every 10-20 minutes, with the large fan remaining still. Apparently it's not this main fan, it still runs silently. There is a small removable cover on the back side of the air purifier that hides a unit that analyzes air quality:
That's where the little fan hides, periodically sucking in air for analysis! And it gets very noisy over time. What can be done? The easiest way to do is to insert a toothpick under the blade of this fan without disassembling anything. This may be a temporary solution of the situation, but a stopped fan under voltage is not very good thing. So it is much better to remove the plastic cover, remove the metal block of the analyzer, open it up, and disconnect the fan. Here it is after removal:
Even without this fan, the air purifier reacts well to changes in air quality. But you can buy a new fan (same or better quality), or order, for example on Aliexpress, a whole new air analyzer unit, it is not very expensive.
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