![[Afterpay, eBay Plus] Xiaomi 3H Air Purifier $199 Delivered @ Gearbite eBay](https://files.ozbargain.com.au/n/27/667327.jpg?h=d638da36)
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Ozb favourite air purifier. Decent price, has been cheaper but not in a few months i think.
[Afterpay, eBay Plus] Xiaomi 3H Air Purifier $199 Delivered @ Gearbite eBay
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Dowhatuwant on 26/11/2021 - 14:01 ebay.com.au (2439 clicks)
Last edited 26/11/2021 - 18:48 by 2 other users
Last edited 26/11/2021 - 18:48 by 2 other users
This is part of Black Friday / Cyber Monday deals for 2021
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np, had been looking for a while myself and got one too.
Where to buy suitable filters for it from? I saw some Hepa 13 filters or such on ebay but their from a random seller.
$39 at Kogan. Free shipping with Kogan First
Thats for a kogan filter not the Xiaomi. https://www.kogan.com/au/buy/xiaomi-mi-antibacterial-air-pur… is their $39 filter but going by the comments it's not a genuine filter - in which case it will be the same as the ebay ones, such as https://www.ebay.com.au/itm/284242587926 which are $27.99 shipped, minus 20% for plus members or 25% if combined with afterpay which brings it down to 20.99.
They have two on their ebay, the Xiaomi Mi Air Purifier 3 3H $265 and Xiaomi Mi Smart Air Purifier 3 3H $299, I honestly can't find a difference, does anyone know?
saw that, looked at details both had the same model number in specs so i went with cheaper one.
Yeah will do the same. Hopefully it's a good unit compared to my families Philips one.
I bought the cheaper one also (after comparing both listings). The Gearbite website only shows the one version (3H), so hopefully it's just a duplicate listing for the 3H.
Did some googling, seems like 3H is more expensive, and comes with the Hepa filter. Difference in price is probably just the air filter that comes included with all other specs the same.
Think I might jump on this tooBoth are 3H's and both come with HEPA Filter according to the description / title, so I'm still not sure! I ordered the cheaper one and want a HEPA filter so it better lol. I messaged them at noon but no response. -
Technology:
H11-grade FiltrationFiltration Technology:
HEPA-Type
They have two on their ebay
I noticed this too since I had it saved in my cart from a few weeks ago — they're exactly the same product (i.e. the 3H). I assume they created a new listing to catch out some people who didn't realise you can get it for a cheaper price.
For anyone who's wondering, the 3H means it comes with the HEPA filter installed. I believe there are some older variants that don't come with a HEPA filter as standard (you have to buy it separately), but I can't remember which model that was.
Thanks mate, thought they were doing that!
Does OzBargain have a "favorite" evaporation air cooler? (we want portable cooler & humidifier / maybe purifier)
is this overkill for a 10sqm bedroom or is it fine?
worried that the air will be TOO pure?
lmao na just wasnt sure if i should get this since its decent or if i should spend less on a more compact one
I don't think there is much of a cheaper option than this tbh
No such thing as overkill when it comes to air purifiers, mate. You want to get the maximum CADR possible. Make sure you run the air purifier manually at the max setting whenever there's any contamination, as you can't rely on the auto settings or the sensor, they're completely useless because they drive the fan at too slow a speed, which means the filter can't do its job.
(proper particulate sensors cost hundreds of dollars in themselves, which is why the sensors in these cheap consumer machines are mostly useless).
And yes, the Xiaomi 3H is a good machine (as long as you manually control the settings). I've owned one for the past year and have just ordered a 2nd one to cover the whole of my apartment. The filters can be had at around $40 each when on sale, and they should last you for 6 months or so with regular use (or longer with only occasional use).
yeah i ended up copping one. thanks
Any one have a (single) air purifier for the entire house (3 bedroom house)?
No
I think you'll need one for each bedroom albeit you could probably be cheap and get smaller units to save money.
For a smaller unit like the Xiaomi 3H, you're gonna need at least 1 air purifier for every 2 rooms. But it depends on what your goals are, you probably don't need to clean the air in your entire house unless you're living in bushfire central or something.
So do air purifiers actually do anything?
I have pretty bad allergies and struggle with coughing/sneezing/breathing at night and my other purifier has eased that by like 90% I would say. Definitely works if you have bad allergies, not sure if you would notice much otherwise - maybe someone else can comment.
They absolutely do work. However, there's a few caveats. Basically an air purifier is a large fan that forces air through a HEPA filter, trapping particulates in the process (whether they be smoke, pollen, COVID/virus particles, etc). So there needs to be sufficient airflow for that to happen.
Auto or "night" settings on air purifiers are generally completely useless because they keep the fan speed so low that the filter can't do its job. So in order for the air purifier to work, you'll need to run it at max settings (or near max settings), which is very loud. You'll basically have to shout/talk very loudly to hold a conversation in the same room. A lot of people don't realise how loud this is, and it can be discouraging.
Also, the particulate sensors on most consumer air purifiers are useless as well because they don't detect harmful particulates until they reach very high concentrations. So even when there's contaminants in the air, the sensor will usually still report excellent/perfect air quality, and the fan won't automatically kick in to high gear. Proper sensors cost hundreds of dollars in themselves which is usually not practical for use in a cheap consumer grade air purifier. If you want your air purifier to work properly, you'll have to manually set its fan speed to maximum (not a big deal).
If you're planning on using an air purifier as a remedy for allergies, I would advise caution. If your allergies are caused by bed mites or other dust/pollen that's on the ground or settled on your bed/furniture, an air purifier won't do anything about that — it only works for stuff that's floating in the air. I have pretty bad hayfever and in my apartment I find that the pollen doesn't stay in the air long enough for my air purifier to actually do anything helpful — YMMV.
Personally, I use an air purifier for 2 things: bushfire smoke, and to reduce the amount of virus/COVID particles in the air. It works splendidly and very effectively for this, as long as you manually run the fan at maximum speed. In this regard, an air purifier is kind of a niche product. A lot of people would find the loud noise alone to be a dealbreaker. For this reason, I don't run mine all the time, only when I need it.
There is no such thing as a quiet and effective air purifier, BTW. It's simple physics. If you want the HEPA filter to do its job, the fan has to run forcefully.
An air purifier doesn't have to cost a lot — in fact, you can make your own makeshift one (there's various YouTube videos out there) with a fan and HEPA filter, and they're surprisingly effective. But the fan has to be powerful enough to move a lot of air. For the rest of us, a consumer machine at a reasonable price like the Xiaomi 3H is perfectly fine.
Here's a couple of useful videos I've collected along the way while researching air purifiers.
https://www.youtube.com/watch?v=Cgn-K5wbh2A
https://www.youtube.com/watch?v=OQ6DhgwgtGwBTW if anyone is planning on using an air purifier to help reduce the risk of COVID or other viral infection, watch that last video — airflow in your building/rooms is key. Open all the windows and doors you can. You want to maximise the amount of fresh air circulating, and minimise the amount of stale air. An air purifier is only one tool to help in this regard, it's not a perfect solution.
Mate thank you so much this was really informative and reinforced my suspicions. What do you do to combat your hayfever?
You're welcome!
I tend to keep the windows in my bedroom closed during Spring and early Summer, and only open them once a week or so for the occasional airing. I still keep the windows in the bathroom and kitchen open 24/7. Note that I personally don't run my air purifiers for pollen/allergy reasons. I find my hayfever is generally pretty manageable while I'm indoors, it's only when I'm outdoors that the exposure gets bad — particularly in the city, where there's lots of London plane trees. Again, YMMV — I'm sure there's people who live close to lots of noxious plants/grasses who may well benefit from running an air purifier to combat allergies/hayfever.
I use Nasonex spray plus Telfast to keep things at bay when I do have to go outside. And a mask does help a lot in this regard too — I wear the T4 (P2) mask from AMD (locally manufactured) which works really well for me.
One of the most insightful/useful comments I've read on this site. thanks mate. was considering getting this for wife's hayfever but now am reconsidering
No probs! It might still work for your wife's hayfever, but the effectiveness can be hard to predict, depending on your personal situation — in my case, it didn't help for my allergies. It has helped for other people — you could give it a shot, and sell it later f it doesn't work.
Would you recommend this in the same room as a 3d printer? New to 3d printed land and have read that fumes from filaments aren't the best, thanks.
I do occasional 3D printing and have been contemplating doing this. The most popular filament type, PLA, doesn't give off as many nasties as the worst which is ABS, but there are still some fine particulates that could potentially be an issue. In theory, the HEPA filter will help to dramatically reduce the amount of harmful particulates, yes. However, in order for it to do its job, the air purifier has to run at max speed (or near max speed), so a lot of air is being pushed around by the fan.
FDM 3D printers can be very sensitive to draughts and breezes which can cause print quality issues, so you should probably make sure you have an enclosure to protect your printer from the moving airflow — it doesn't have to be an air tight enclosure, just enough to shield it from the worst of the breeze.
Alternatively, you could have an airtight enclosure, and then vent the exhausted air (via extraction fan) from the printer to where the air purifier is standing.
Note also that most of the nastiest stuff is usually emitted at the start of printing, so you can probably dial down the air purifier to a slower fan speed after a few minutes.
Would anyone know if (this) air purifier help with the dust (in a bedroom)?
I wipe down surfaces and vacuum couple times a week. However I find that dust builds up quicker in my room compared to any others.
I do keep my computer on for most of the day.
Edit: I also change my bed sheets every fortnight, but doesn't seem like it helps.
The pro model price fluctuates a bit. Seems to vary between $20 to $150 more than the 3h version according to ozbargain history. Why such a big difference and if only a $20 difference for a bigger coverage area, why do people still opt for the 3h model? It feels like pro is the better deal, am I missing something?
https://www.ozbargain.com.au/product/xiaomi-mi-air-purifier-…And there is also a pro 4 model. Confusing as hell
Yeah when the Pro 4 listing just went up, I came here to work it out. Glad I'm not the only one. I'm pretty sure I'm going to wait for one of the Pro models to come on sale at like $180 which I've seen in the past. Seems way more cost effective for the amount of air it cleans.
I will just say that the Pro doesn't come with HEPA filter so add that cost onto it. The 3H does.
Unless anyone has any more insights I'm missing?
Do you mean the machine doesn’t work when delivered until you buy a filter? Or that the filter isn’t the HEPA kind
I’m also curious whether the filter is the same size the 3h and the 4 and the pros
thanks finally pull the trigger