Air Purifiers

Posted in: Forums > Living in Chengdu • 35 posts • NewestRSS

  • Isaac
    January 19, 2010
    16 posts

    Have people who have used air purifiers found that they work? Where can I buy one? Thanks!

  • invisible
    January 21, 2010
    1533 posts

    Haven't used any myself yet. But I'm also planing to get one. First one that comes into my mind would be IQ Air, they are from Switzerland and seem to be the thing, but they start at RMB 12,000 so it's more of a long-term investment.

    http://www.iqair-china.com
    Second option (from Singapore?) is smaller and cheaper (don't quote me but I think it was like RMB 300 plus the refill/filter). Check www.goodaire.com or head to 8trees Wine Bar- Theo the owner also retails them.

  • Isaac
    January 21, 2010
    16 posts

    I've also heard that there's one called the "Blue air model 201/250E" that's supposed to be pretty good and runs between 3,000 to 5,000 RMB. And then there's the "Honey Well 17250", which is a little cheaper still. But that name never fails to make me think of a portable toilet, and I don't know if I could use an air purifier that reminds me of sewage every time I see the logo.

    Is there a local place that sells these things?

  • Isaac
    January 21, 2010
    16 posts

    Assuming that Theo doesn't just have a stash of them in the back of 8trees...?

  • invisible
    January 28, 2010
    1533 posts

    @Isaac
    I guess not, but they use then in the restaurant so you can see how it works.

  • invisible
    November 15, 2011
    1533 posts

    on topic
    http://www.myhealthbeijing.com/2010/11/fight-crazy-bad-air-cheaply/

  • coryg
    November 15, 2011
    20 posts

    There was an article in the South China Morning Post about how most air purifiers sold in HK didn't actually do anything. These are most likely the same units sold in the Mainland. There was a huge investigation and many companies were fined by the HK government for fraud or some other related charge. In Beijing, many of the gov. officials use these industrial air purifiers that are priced around 15,000 RMB. Supposedly you can actually empty out the sludge on a daily basis. BTW, I have a honeywell air "purifier" and all it does is circulate air. It was a gift that my wife received and it basically takes up space. I would not recommend it to anyone unless you enjoy wasting money.

    -Cory

  • berlydallas
    November 17, 2011
    23 posts

    I have to say that I have had great luck with our air purifiers. We have Allen purifiers. I bought them via Beijing and they shipped here. They are cheaper than IQ air, but some studies they say they are just as good. I have this model: A375UV Multi-Gas HEPA Air Purifier. Here is the website: http://www.alencorpchina.com/ I have also heard the Blue Air Purifiers are quite good.

  • dvril
    December 13, 2011
    1 post

    Looking for air purifiers for our place, come across with this post http://www.myhealthbeijing.com/2011/12/alan-air-purifiers-battle-iqair-and-blueair/ think it would be useful for people who is also looking to buy air purifiers, good advise on how to make the decision.

  • nico.bio
    December 16, 2011
    3 posts

    You can also have a look at Broad air purifier. I've heard they use this brand in the officials building in Beijing. http://www.broad.com
    We bought one and make the VOC level checked. The result is good.
    If you have more related links to share about health and sustainability, please send them to me and I'll add them to the http://www.cdlohas.org platform.

  • invisible
    January 22, 2013
    1533 posts

    what's up with these philips and panasonic air purifiers? i've seen them on sale for 600-800 kuai, but the packaging doesn't reveal any technical details. Are they placebos or do they really work?

  • merior
    January 22, 2013
    70 posts

    We have the Philips AC4002. It has been in overdrive recently 24 hours a day. Today, with light to moderate pollution, it is operating with a low fan speed and only occasionally boosting it to the moderate fan speed. Based on the fact that it is obviously responding to the degree of pollution (it has a sensor) then it cannot be a just a placebo albeit that it's various lights (not available on the cheaper models) are reassuring that it is apparently functioning. Apart from airborne particles, it also gets rid of the smell, by means of a carbon filter, that wafts up through the fan extractor dust courtesy of the neighbours. It also has a bedroom setting where it runs continuously at a very low (quiet) fan speed.

    On the minus side it is not going to get the very small particles that significantly more expensive models are aimed at. I have, however, found that it has significantly reduced the level and the frequency of the painful eye irritation I get in response to the pollution.

    Its priced at about 3,000 RMB with replacement filters (HEPA and carbon) priced at about 250 RMB each. We bought ours from a flagship branch of Suning near Auchan or you can get them on Taobao: http://www.baoseek.com/index.php?main_page=products_list&cPath=&page=1&keyword=philips ac&seller_id=&sorttype=&start_price=&end_price=&start_volume=&end_volume=&start_score=&end_score=&prop=

    RECOMMENDED but you get what you pay for and the lower priced Philips models are obviously not going to have the same sophistication of automatic operation) or the potential power for a larger room size. Do your own comparison as we did to decide which model is for you.

  • invisible
    January 22, 2013
    1533 posts

    mmh but 3000rmb is a league up from what i'm looking at and does take my breath away to use a catchphrase of the Alen Air which is prob one of the best in this category
    http://www.myhealthbeijing.com/2011/12/alan-air-purifiers-battle-iqair-and-blueair/

    btw looks like these machines are MUCH cheaper abroad than they are sold in china.

  • merior
    January 22, 2013
    70 posts

    Try this Philips site to get the full spec on all their models. Yes, it would certainly not suprise me if products were cheaper in countries with lower polution or where there aren't as many 'nouveau riche'.

    http://www.support.philips.com/support/catalog/worldproducts.jsp;jsessionid=9385FD974BE06A264D16FC5181E882E1.app107-drp2?userLanguage=en&userCountry=tr&sel=&catLookUp=&categoryid=AIR_PURIFIER_SU_TR_CARE&navCount=5&navAction=push&sortValue=&show5Yrs=false&pageFrom=&title=&categoryName=&_dyncharset=UTF-8&page=2#

    Time to research the military grade anti gas suit next. Now, who do I know in the military?

  • invisible
    February 3, 2013
    1533 posts

    another suggestion by beijing cheapo expats is this one: Moral (sic!)

    rmb1200

    http://detail.tmall.com/item.htm?spm=a220o.1000855.w17554414375.1.b5hJm3&id=14046717999

    i'm tempted

  • invisible
    February 3, 2013
    1533 posts

    Now there a mobile solution for bike riders

    Here is a prototype
    http://designtaxi.com/news/355608/Modified-Bicycle-Filters-Beijing-Air

    wonder how long production will take

  • ggggg
    March 16, 2013
    19 posts

    how about the price of filters for these machines? how often do you need to change it?

  • merior
    March 18, 2013
    70 posts

    The price you pay for a filter will vary according to the function of the filter, the size and the manufacturer. If you want a rough guide the look them up on Taobao.

    Think in terms of changing filters after a couple of years depending on the use that you give it. Some manufacturer's machines, such as Philips' may have a sensor that tells you when to clean a filter and when to replace it.

  • invisible
    April 4, 2013
    1533 posts

    @gggg

    filter for the 3000 kuai machines seem to be in the 500-1000rmb range, and i think i heard 1,500 plus for the the 10,000 kuai machines

  • ggggg
    April 29, 2013
    19 posts

    @ invisible: thanks for the info! Have you finally bought one? if yes, which one and how does it perform?

  • invisible
    July 1, 2013
    1533 posts

    The cheapest air purifier seems to be the Philips models for around RMB1,000, but some promos go down to RMB750. Filters are around RMB200. I haven't tried them, but at this price I'm curious what they are capable of.

  • ynwa2001
    July 1, 2013
    14 posts

    Hey,

    I am leaving in 2 weeks and have a philips air purifier if anyone is interested. Still boxed and only used for around 6 weeks. Drop me an email and I can send pics and price to you. ynwa2001@hotmail.com

  • invisible
    July 23, 2013
    1533 posts

    a test of a DIY filter solution

    http://particlecounting.tumblr.com/

  • invisible
    October 14, 2013
    1533 posts

    you can order a cheap DIY set for 200-300 kuai here

    http://smartairfilters.com/

  • ThomasTalhelm
    October 15, 2013
    3 posts

    Hi there! This is Thomas, the DIY guy from the Particlecounting Tumblr.

    I've posted data from tests of filters here:

    http://particlecounting.tumblr.com/post/55665836265/purifier-tests

    and here:

    http://particlecounting.tumblr.com/post/55947941919/diy-compared-to-expensive-filters

    Based on that data, my conclusion is you can protect yourself from air pollution in China for 200 RMB, so I started shipping the units to people directly from smartairfilters.com.

    And if anyone's in Beijing, you can come see a live test of the filter with a particle counter:

    http://smartairfilters.com/#workshops

    But if you're averse to a DIY, I'd recommend going with a simple HEPA machine, rather than the super expensive Blue Air and IQ Air. Dr. Saint Cyr's results show that HEPAs are as effective. See his tests of the Hunter brand here:

    http://www.myhealthbeijing.com/china-public-health/blueair-vs-iqair-and-the-winner-is/

    When you buy a Blue Air or IQ Air, you're buying a HEPA (and a really expensive HEPA at that).

  • invisible
    October 15, 2013
    1533 posts

    @Thomas

    which HEPA would you get for a cheapo DIY solution?

  • ThomasTalhelm
    October 16, 2013
    3 posts

    I've tested a bunch of different HEPAs (planning on posting those results soon), and I haven't found a big difference between different brands. 6 out of 7 models I tested were getting > 99%.

    Most I see on Taobao are ~100 RMB. We negotiated with a manufacturer that had good test results based on our tests and are able to ship them for 80 RMB (including shipping) from our site:

    http://smartairfilters.com/#diykits
    http://smartair.taobao.com/

    So you save 20 RMB, and you get a HEPA from a manufacturer we've tested personally.

    And you can pay with PayPal, which is a plus for me, because I've never opened the mafan Chinese online payment system. Of course, you can always order one on Taobao too!

  • invisible
    October 17, 2013
    1533 posts

    @Thomas

    Thanks. Sounds all great. Will def try out and test very soon and report back. Do you think your solution would be working in shops and restaurants too?

  • ThomasTalhelm
    October 18, 2013
    3 posts

    Sure! It'll improve the air wherever you put it. If you have a particularly large space, I see two solutions: (1) you can place a few of these around the place or (2) you could try the larger version we're developing right now. It's a bit bigger, but it moves more air and can clean a larger area. If you're interested, I can explain more via email. Contact info is here:

    http://particlecounting.tumblr.com/post/55404419480/about-me

  • Aireline
    November 22, 2013
    106 posts

    We got our filter about three weeks ago. After using it for about 6 hours the day that we got it, it's pretty much been just sat unplugged in the corner. I suppose my reason being it that when you look at it, it's just a filter connected to an electric fan. It seemed like a waste of electricity to just leave it running without actually seeing any difference.

    However, I came home this evening to find my girlfriend had had it on for about 5 hours. She'd also used it a couple of times whilst I was at work. It's at this point, (at around the 20 hour mark); we've realised that what we thought was the circular shadow of the fan, is infact all the crap it's removed from the air. Honestly, I'm genuinely shocked at how dirty it's become in such a short amount of time.

    I'm pretty sure I read on the blog they use the filter until it get's disgusting, but at this rate, I can't see it lasting a fortnight if I used it daily.

    On one hand, it's fantastic value for money; we're thinking of buying a couple more to put in different rooms. On the other hand, we're faced with the harsh reality of the situation we're actually living in. Living in Chengdu is very lucrative, but it's making us question whether the health risks involved are really worth the money.

    We've got a lot to think about.

  • invisible
    November 28, 2013
    1533 posts

    i tried out a secondhand air purifier, but i don't really feel an improvement of air quality. I guess that if the filters are too old it's possible that the machine doesn't filter air at all and may even release it's dirt back into the room. So yes for Chengdu you'd have to constantly change filters.

  • invisible
    March 1, 2014
    1533 posts

    a data sheet of air purifiers in China

    http://www.myhealthbeijing.com/pollution/finally-great-data-on-air-purifiers-in-china/

    @thomas

    Thanks. We got one of your filters/ fan combi packs. I like that the fan only needs 25W. We usually run it in the room we currently don't use as i can't stand fan sounds. After running the thing for like 3-6 hours and entering the room i get a headache and it doesn't stop until I open the window to let some Chengdu "fresh air" in. The side of the filter with the sticker faces the fan (btw a little English version wouldn't hurt). I read about some air purifiers producing ozone, but I hope this is not the case. Any clues?

    http://www.epa.gov/iaq/pubs/ozonegen.html

  • invisible
    December 8, 2016
    1533 posts

    Since air pollution got out of control the last couple of days and

    Xiaomi has released the second generation of their budget air filters I thought I drop by with an some update.

    Xiaomi's strategy i to push their mobile into the top quality market share and to fortify their branding of Xiaomi they dump more cheap high-quality quality appliances like laptops or air filters.

    So the Mi Air Purifier 2 comes in two sizes RMB800 and RMB1400, but for most flats I'd think the smaller one is good enough.

    It has three modes: auto, sleep, and power mode - in auto it automatically adjusts the fan to the pollution, in sleep mode it keeps quiet, power mod is when you put it in a new room for example.

    It works great, it's a nice little machine that only takes as much space as a A4 sheet.

    Myhealthbeijing has a nice comparison chart and also recommends the machine in the budget segment.

    http://www.myhealthbeijing.com/china-public-health/the-best-air-purifiers-under-1000-rmb-my-test-results/

    You can control it via your mobile with the Xiaomi app, but i'm very sceptical of this as the app is incredibly intrusive and demands the full spectrum of permissions. Given Xiaomi's track record in the past (constantly sending data from Xiaomi mobiles to Chinese servers) and it's proximity to govt - I wouldn't recommend using this spying tool.

    You can order it from the Xiaomi shops that are plenty in Chengdu (same day delivery) or from their website

    http://www.mi.com/en/air2/

    Bottom line: you need an air filter now, don't wait.

  • invisible
    December 12, 2016
    1533 posts

    Can anybody recommend portable small air filters?

    This Wynd looks great, but is not ready for shipping yet (replacement filters are dirt chaep at 7 USD)

    https://www.youtube.com/watch?v=bMT5JdFCx98

    http://hellowynd.com/

    I wonder if you could attach a mask connected to an airbag - so you could still do sports outside.

  • ig246z
    July 13, 2017
    5 posts

    Hi, I bought the Xiaomi Air Purifier after reading such good things about it on this website and having it personally recommended to me by friends. I created an add announcing that I am selling the air purifier (and PM2.5 filter). Until that advertisement appears in the classifieds section, you can contact me on WeChat (David_L2000) if you want to pick up the air purifier for 650 RMB, OBO.

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