Xiaomi Mi Air Purifier Filters

Hello everyone! It's almost time to change the filter for my Mi 4 Pro air purifier. Even after vacuuming, the system is still giving me a warning that the filter is overdue for a change.
Curious to kno if any of you have experience with purchasing a $20 filter from eBay. Alternatively, is it better to go for a genuine Xiaomi filter from a reputable seller like Kogan? Your input is much appreciated. Thanks!

Comments

  • Even after vacuuming, the system is still giving me a warning that the filter is overdue for a change.

    That is correct, the unit tracks the number of hours that filter has been used.

    is it better to go for a genuine Xiaomi filter from a reputable seller

    Considering you want it to filter the air, I would go for a genuine one then you know it should work correctly.

    • Typically how often do you need to replace the filter if you vacuum it every now and then?

  • +2

    reputable seller like Kogan

    Thanks for that laugh

    • LOL they are literally the only few vendors that carries the stock

  • Even after vacuuming, the system is still giving me a warning that the filter is overdue for a change.

    Of course it gives a warning. The warning is based purely on time and not effectiveness- there is an RFID chip in the filter so the purifier knows that the filter hasn't been changed out, and it will keep bugging you. Vacuuming might

    I haven't bothered checking, but if you can remove or block out the RFID, the warning might go away. Or just ignore the warning.

    Personally, I would be okay with a third party filter. These things are not high tech in the slightest.

    • But how often do we really need to replace the filter if it's been vacuum from time to time?

      • How long is a piece of string?

        The filter will eventually clog up with ultrafine particles that don't get removed with a vacuum, but it really depends on how often you run the purifier, at what speeds, and how dirty your environment is.

        If you want to know for sure, buy a particle counter.

        I used to run my filters 6+ months, but that was with pre-filters installed. I would never vacuum. Generally at low to medium-low speeds. 24 hours a day. Tested with a particle counter.

  • Genuine Xiaomi filters go on sale for around $40 delivered

    The device just counts down 186 days from when you first insert the filter; if you care enough rip the label off the bottom of the filter and use it for a year. It will show a warning on startup that it's non-genuine but disappears. Remember to take it out and brush off the dust every other month

    Otherwise end of the day it's just a bit of mesh that captures dust and particles. Non-HEPA filters I would be fine with non-genuine but otherwise price difference isn't that big knowing it's doing the job right

    • Thanks for the information!
      Mine is a 4pro so it's gonna cost around $70 which is pretty steep.

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