Xiaomi Air Purifier 4 Smart APP Control CADR Up to 400m3/h OLED Display, Purify Pollen and Reduce Harmful Particles, Antiviral Coating Filter, Eliminated Virus* Effective 24-48m2 Room Size

I bought this because my partner suffers from a pollen allergy. We think the unit has made a difference, but it's hard to tell for sure because this unit doesn't measure PM10 (pollin) sized particles. It only measures and responds to PM2 sized particles (urban pollution) - so when on auto, it always run at the lowest speed. There is also the Xiaomi PRO model, which does measure PM10 particles, but has a bit bigger footprint. I also considered the Samsung AX34T, which does measure PM10, but it has a lower CADR rate, a bigger footprint, and much more expensive filters. The unit requires 200mm of free space around ALL sides, so make sure...view more I bought this because my partner suffers from a pollen allergy. We think the unit has made a difference, but it's hard to tell for sure because this unit doesn't measure PM10 (pollin) sized particles. It only measures and responds to PM2 sized particles (urban pollution) - so when on auto, it always run at the lowest speed. There is also the Xiaomi PRO model, which does measure PM10 particles, but has a bit bigger footprint. I also considered the Samsung AX34T, which does measure PM10, but it has a lower CADR rate, a bigger footprint, and much more expensive filters. The unit requires 200mm of free space around ALL sides, so make sure you allow for that. The front-controls are easy to understand. The Android app gives you more control, such as being able to turn off the negative ion generator, set a custom fan speed according to room size, or program on/off/speed changes for different times of the day. At the sleep setting it's relatively quiet, but there is a noticeable, fan/air-movement rustling sound which is pretty easy to get used to. At the lowest manual fan-speed (probably similar to sleep mode speed), the unit reports it can fully cope with a room of 5-9 square meters, it's pretty quiet up to 7-13m, but the noise lifts substantially after that. If run at top fan speed, you probably wouldn't want to be the same room with it. It feels like it's making a difference, it's easy to control, fits into the space, isn't too expensive, the consumables are not too expensive, it looks nice in the rom, so we're happy with it.

Perfect for the apartment and does a great job at this price point! Perfect for the apartment and does a great job at this price point!

An effective and efficient air purifier with all the bells and whistles. Integrates seamlessly with Alexa and Google Home for automation/voice control. Quality craftsmanship with an easy to access air filter for replacement.
The entire device is surprisingly light, so can be moved with ease. Would recommend. An effective and efficient air purifier with all the bells and whistles. Integrates seamlessly with Alexa and Google Home for automation/voice control. Quality craftsmanship with an easy to access air filter for replacement.
The entire device is surprisingly light, so can be moved with ease. Would recommend.

By: passedpawn1986 08/11/24

Verified Owner

Great product, quiet and easy to operate, easy to use with wifi control. Good relief for my hayfever. No regret. Great product, quiet and easy to operate, easy to use with wifi control. Good relief for my hayfever. No regret.

im super alergic (Suffering which stuffy nose)
After having this, all symton have been improved dramatically. Almost no need any medicine for now. Work since day one. im super alergic (Suffering which stuffy nose)
After having this, all symton have been improved dramatically. Almost no need any medicine for now. Work since day one.

It’s effectively great in its purpose. It’s effectively great in its purpose.

Well featured for the price. And good purifier, room air seem cleaner Well featured for the price. And good purifier, room air seem cleaner

Looks good! My wife has allergies and it seems to help. This is the second unit in the family. Works well and very quiet. Good info on display and control on app. Looks good! My wife has allergies and it seems to help. This is the second unit in the family. Works well and very quiet. Good info on display and control on app.

Had it for only a few weeks. No need to use it regularly as the house is well-ventilated enough but it helps with kids `allergies and after heavy cooking Had it for only a few weeks. No need to use it regularly as the house is well-ventilated enough but it helps with kids `allergies and after heavy cooking

I am sleeping in fresh air now. Feel so good I am sleeping in fresh air now. Feel so good

Very happy with this product.
With summer here my allergies have increased, this product made a noticeable difference within hours.
The app is a great feature. Very happy with this product.
With summer here my allergies have increased, this product made a noticeable difference within hours.
The app is a great feature.

this has been doing a great job in a very large room and bedroom , night mode is very quiet , can barely hear it . I used to wake up sneezing in middle of the night , i no longer do with this running so thats my proof, very happy with it , easy to use . the only niggle i have with it is that it only runs on 2.4ghz wifi and some minor options are only available on app, me being fussy. this has been doing a great job in a very large room and bedroom , night mode is very quiet , can barely hear it . I used to wake up sneezing in middle of the night , i no longer do with this running so thats my proof, very happy with it , easy to use . the only niggle i have with it is that it only runs on 2.4ghz wifi and some minor options are only available on app, me being fussy.