• out of stock

Xiaomi Mi Air Purifier HEPA Filter $38.25 ($37.35 with eBay Plus) Delivered @ Luckymi eBay

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It's been a long time since there's been a deal on genuine Xiaomi Air Purifier filters and Luckymi have received a heap that are discounted thanks to the codes. This filter is suitable for the Xiaomi Mi Air Purifier models 3H, 3C, 3, 2H, 2C, 2S, 2 and Pro.

360 Degree triple layer filtration allows for maximum intake. Each filter uses RFID tagging and comes with its own unique ID. It is a true HEPA Filter with filtration efficiency of 99.97% for particle size up to 0.3 microns. The primary filter ensures large particles are filtered out. The activated carbon filter removes dust, odours and other respirable particles. Filter replacement is made conveniently easy and can be changed in 10 seconds.

Original Coupon Deal

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closed Comments

    • Are you sure? I couldnt find this item when going through student edge > ebay.

      The SE code might only be for certain items?

      • Maybe you are right, someone metioned it's an "eligible items only" code.

  • Thank you so much, Clear. Legend!

    I vacuumed out the fluff from my old filters to get by.

  • Thanks OP - mine hit 0% remaining a while ago and have been keeping an eye out for a deal to pick up a replacement. Code worked perfectly.

    • +3

      Just vacuum it and reboot.

      • +1

        Ours is used in the kitchen as we don't have a functional range hood or the ability to vent it outside even if it worked - that means lots of greasy smoke getting sucked in which vaccuming won't do much against unfortunately. Happy to pay $40 every year and a half (sometimes even longer) for a new one - even if it goes against the OzBargain way :P

        • Oh hey i have the same kitchen thanks for the idea

    • +2

      I routinely ignore the % remaining figure as it's based on nothing more than runtime.

      I've measured effectiveness of older filters with particle counters, and would typically triple the recommended runtimes, only replacing them because I had easy access to replacement filters.

      • Peel off the metallic sticker under the filter to remove the warnings

        • Did you mean to respond to someone else?

          (My purifiers do not even have an RFID reader, they were chosen specifically because of this lack of 'feature').

  • +2

    Where exactly do you put the tinfoil to block the RFID please? I have tried a few places on the bottom and with tinfoil you use for cooking, is that thick enough, even if I fold it in layers please?

    Someone else on OzB uses sone sort of plastic wrap around the filter cartridges they get from AliExpress to wrap around these to extend their life. Otherwise you just just a message every day if you have it hooked up to the Mi Home app saying that it needs to be changed.

    Honestly I though the RFID chip or reader would be a bit more obvious. I have. 3H Pro from memory.

    Thanks in advance. I’ve seen the Version 4 start yo sell but they also use a different filter and I got six HEPA filers from Kogan for a very cheap price about a year or so ago.

    I’ve still got some basic 3 models for the bedroom and computer room but they just don’t pull in the big dust. So was looking at Philips and Samsung and even Daikin to filter the larger dust particles.

    I know this has all been discussed before. Point me back to the old links if it’s easier please.

    4 Pro and 4 Filters are much more expensive. But I think they still suffer from the same issue, first stage filtration not getting the bigger dust and that’s what I’m trying to stop as much as the finer stuff. My budge is too tight at the moment to go nuts and I can’t trust sone of what I read as it looks like it could have been taken from a marketing flyer or press release.

    Thanks again.

    • +1

      Taping the RFID under the filter doesnt work for me - just peel it off

    • I’ve still got some basic 3 models for the bedroom and computer room but they just don’t pull in the big dust. So was looking at Philips and Samsung and even Daikin to filter the larger dust particles.

      You'll want to look for a robotic vacuum (assuming you don't want to manually vacuum surfaces), not an air purifier.

    • I’ve still got some basic 3 models for the bedroom and computer room but they just don’t pull in the big dust. So was looking at Philips and Samsung and even Daikin to filter the larger dust particles.

      You don't use a purifier to 'pull big dust'- that'll just wreck the filters and is a total waste of money and machinery.

      Purifiers are designed to remove invisibly small, health-damaging particles.

      If you have dust problems, you need to vacuum more frequently.

      • You are meant to use something like this https://inovaairpurifiers.com.au/products/e20-pre-filter

        • I'm already using something like that, but it won't clear the air of coarse dust unless you run the purifiers like jet engines.

          Edit: wow, $50 for a single pre filter is nuts. I'm using a 3M product called Filtrete which is designed to sit in front of an air condition mesh filter. Much cheaper, not sure if it's available here though.

          • @rumblytangara: This might be of interest to you https://dynomight.net/ikea-purifier/

            • @deme: That wasn't surprising I guess. I stopped paying attention to generic comparison sites like wirecutter a decade ago when I realised how bad they get it wrong for any area I have a clue in, so it's probable they get it wrong in areas where I areas I'm clueless about.

              Purifiers are basically very simple things, there's only a small number of parameters to consider. And mechanically they are crazy simple- I have no idea why people spend north of five hundred dollars for a plastic box that holds a fan and a filter.

    • +1

      Replacement RFID stickers… i could make some.

  • OOS

  • Damn sold out as I was checking out!

  • -1

    You dont really need to replace the hepa filter. The motor will usually die before the filter needs replacement in a consumer residential setting use.

    Just clean it by vacuuming the inlet side of the filter and a gentle brush and it should last a lifetime.

    The only time you'll need to actually replace the filter is when the fan is running but no air flow on outlet side.

    • +1

      Mine has a weird smell to it

      • +2

        That means it has been polluted with gases or oil fumes or odors and got stuck to the hepa filter fabric. This xiaomi air purifier has a bad design where air gets drawn in first into the hepa then only to the carbon filters. It should be carbon filters first then hepa so that the odors dont get stuck in the hepa filter fabric while travelling through the air purifier.

      • +2

        I have this exact issue.
        The filter says it still has 60% remaining but is releasing a strong chemical smell, acetone / vinegar like that triggers my asthma so I need to replace it.

        • This xiaomi air purifier has a bad design where air gets drawn in first into the hepa then only to the carbon filters. It should be carbon filters first then hepa so that the odors dont get stuck in the hepa filter fabric while travelling through the air purifier. Cheaper Kmart ones have these better designs so that the hepa stays fresh smelling!

          • +3

            @mrvaluepack: Sorry if I didn't explain it right.

            The filter starts out fine, however as it ages (still with 60% remaining) it begins to generates this chemicals smell. The filter hardly ever gets above 1 as its located in my bedroom (for pollens and dust) and 60% is still after 6mths installed so its not getting polluted. I have tried the green, purple and grey HEPA all end up the same.
            I have read this is a common complaint.

            • @Monoclonal26: Do you have any humidifiers, essential oil diffusers, perfumed candle, etc in your bedroom? Is the air purifier near the ensuite shower door, could be the moisture after a hot shower?

            • +1

              @Monoclonal26: It is common amongst non-genuine filters.

              Are you sure yours is genuine Xiaomi filter?

          • +1

            @mrvaluepack: Meh, having pulled apart the carbon filters in the Mi units, I wouldn't place much credence in their ability to do anything anyway. So little carbon and so much space between those chunks of carbon. I doubt it makes any difference if it's before or after the HEPA filter.

            The cylindrical filter design makes it easy to retrofit your own carbon module though.

            (This is true of the carbon filters in most other purifiers too- they are very token).

          • @mrvaluepack: Pre Filter -> HEPA -> Carbon

            is how it's meant to go.

            Activated carbon, which is commonly used in carbon filters, is treated with oxygen to create millions of tiny pores between the carbon atoms. These pores provide a large surface area for adsorption, which is the process by which molecules adhere to the surface of the carbon. This allows the carbon filter to effectively capture a wide range of molecules, including gases and odors.

            While gases and odors are smaller than the particles captured by a HEPA filter, they are often associated with larger particles such as dust and smoke. By placing the HEPA filter first, these larger particles are captured, which can help to reduce the load on the carbon filter and extend its lifespan. Additionally, the HEPA filter can help to prevent particles from clogging the carbon filter, which could reduce its effectiveness over time.

            • @deme: yes, however the design you mentioned, like i wrote above, causes some of the odor and gases to get stuck in the HEPA filter and will make it stink after awhile. The only way to get rid of odors in HEPA filters is like any other cloth material, give it a good wash in warm soapy water, but most HEPA filters aren't really designed or made to be washed.

              That is why other air purifiers like the cheapo Kmart or the highly rated and expensive WINIX brand air purifiers have this design instead:

              Air Grill -> Pre filter -> Carbon Filter -> HEPA filter

              If the carbon filter gets dusty or blocked, you can just take it out and clean it by vacuuming it.

              • @mrvaluepack:

                causes some of the odor and gases to get stuck in the HEPA filter and will make it stink after awhile. The only way to get rid of odors in HEPA filters is like any other cloth material, give it a good wash in warm soapy water, but most HEPA filters aren't really designed or made to be washed.

                Never wash or vacuum a HEPA filter.
                Odors are just too small to be diffused by a HEPA filter.

                expensive WINIX brand air purifier

                https://www.ausclimate.com.au/products/winix-zero-pro-5-stag…

                It looks like a pile of crap, the amount of carbon there looks tiny and they don't even mention how much, you should have at least 2kg

                • @deme: Not a pile of crap, very highly rated everywhere.

                  Even Samsung AX90 the one bought by the department of health and education and the one recommended by choice has the better design where the carbon filter is before the hepa.

        • Is the smell being emitted by the air purifier while operational?

    • +2

      This is just wrong, and basically defeats the whole purpose of HEPA filters

      • Please explain

      • Nope. You are wrong. As long as there is reasonable air flow from the outlet, it means the filters are doing its job. Cleaning the filters periodically helps extend the life. Companies just want you to continue to buy replacement filters from them to make more money and are pushing the 6 - 12 monthly filter replacement propoganda.

      • Good quality HEPA H13 filters don't degrade (break down) - the particles they capture lodge inside and start blocking other particles more effectively but less efficiently. So air flow drops a little and trapping effectiveness goes up towards 100%. Some filters can last for years.

        Generally the timeframe is based around the carbon element of the filter. Carbon filters begin to release previously captured VOCs back into the room when saturated. This is the reason some purifiers use HEPA wedged with carbon filters - it's marketing. If you can separate the filters you can extend the life considerably.

      • What and source?

  • Damn , late again!!

  • +9

    I'm working on getting more stock allocated. I will comment here again and update the deal if I can get more.

    • +1

      please, do need couple of filter.

      • +15

        I checked and they've advised that's all of their stock. They're going to order more for May. A lot more.

        • -2

          Awesome, thanks Clear. COuld you organise some quantity deals too, eg buy 2, 3, 5 etc for bigger saving, thanks!

  • Ahh missed it.

  • -5

    Air purifiers…… Creating a problem for a solution.

  • Always wonder if we can just clean and reuse the filter. Seemed to be a waste to trash it.

    • +1

      I'm cleaning and reusing my filters now - still doing a perfectly good job at lowering smell and poor air quality and airflow still great. Agree, hate the waste.

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