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Air purifier? - Part 2

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Old 10-09-2019, 12:46 PM   #2956
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Hi there,

I have a Samsung AX40. Any lobang for replacing the filter as it's not been used for quite a long time.

TIA
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Old 10-09-2019, 12:55 PM   #2957
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I haven’t update to latest. Still at ver 4.21.2 (iphone) ... this one no issue.

Their app sot sot one. Reluctant / hesitate to update if existing version works fine.

Updated my MiHome to the latest. Now cannot set favorite/manual fan level. Can only Auto, Nite dan Favorite. Also cannot see the filter %. And my car purifier can detect but cannot access. Wonder why onyone?
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Old 10-09-2019, 01:16 PM   #2958
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Hi there,

I have a Samsung AX40. Any lobang for replacing the filter as it's not been used for quite a long time.

TIA
I have been using this replacement filter, so far so good.

(I order "2片加强复合颗粒碳网" as it is more worthwhile, shipping via EZbuy).

https://item.taobao.com/item.htm?spm...d=522668837488
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Old 10-09-2019, 01:53 PM   #2959
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Currently my purifier indicator
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Old 10-09-2019, 02:29 PM   #2960
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Thanks alot. Will take a look at your link

I have been using this replacement filter, so far so good.

(I order "2片加强复合颗粒碳网" as it is more worthwhile, shipping via EZbuy).

https://item.taobao.com/item.htm?spm...d=522668837488
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Old 10-09-2019, 03:56 PM   #2961
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Updated my MiHome to the latest. Now cannot set favorite/manual fan level. Can only Auto, Nite dan Favorite. Also cannot see the filter %. And my car purifier can detect but cannot access. Wonder why onyone?
I downgraded the Mi Home to 5.5.14. So far so good. You may want to try.

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Old 10-09-2019, 04:48 PM   #2962
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How to downgrade app version?
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Old 10-09-2019, 04:54 PM   #2963
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How to downgrade app version?
Go google. Can download old versions from those apk mirrors.

https://www.apkmirror.com/apk/xiaomi...load/download/

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Old 10-09-2019, 05:34 PM   #2964
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Currently my purifier indicator
What version is this?
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Old 10-09-2019, 05:36 PM   #2965
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4.21.2 (iphone)



What version is this?
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Old 10-09-2019, 05:43 PM   #2966
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Thanks. Got it liao.
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Old 10-09-2019, 08:46 PM   #2967
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Currently my purifier indicator
Where is your location? The pm2. 5 so high?!

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Old 10-09-2019, 09:09 PM   #2968
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West. Now ok.

From nea app, also show minor “spike” from their “hourly”.



Where is your location? The pm2. 5 so high?!

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Last edited by Lucky177; 10-09-2019 at 09:15 PM..
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Old 11-09-2019, 07:35 AM   #2969
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Hi there,

I have a Samsung AX40. Any lobang for replacing the filter as it's not been used for quite a long time.

TIA
Looks like you are not a regular user, what whitesands recommended is ok and convenient.

For those who are daily users and have multiple AP units (other than the AX40) and want to change it every 6-9 months (you know, the filter smells after a while) and want an even more economical option, just go to Taobao and type DIY HEPA, choose those which are 300mm x 300mm x 2.5cm. The Samsung AX40 is 320mm x 285mm in L and W.

Slice the HEPA up to fit the 285mm dimension first, slice the filter so that it goes "along the grain", it's much easier to cut this way and less messy.
For the other dimension, roll up a bit of the plastic wrapping that comes with the filter and stuff it into the gap between the filter and the walls of the AX40 (since this one is 320mm for the AX40 and filter is only 300mm, hence 25mm gap).

Don't worry too much about the gaps and whatnots affecting the air quality due to bypass (it's very very little only), it'd still have decent CADR and clean the room's air of haze very nicely. The filter's filtration output is about 90-95%, so that is about H10 to H11.
I have confirmed with the laser particle counter, HDB room can still be cleaned. The drop in airflow velocity is noticeable, CADR shd be around 200-230 m3/hr, so still no issue one.
Another good thing is that the due to the lower airflow (due to increased filter resistance), it sort of is a manual medium speed.......so it's even more silent than the original filter at high speed.
I find that for regular use, this 200-230 m3/hr CADR with even more silent operation is fine, not that the orignal filter at 323 m3/hr high speed is noisy.


his is one of them.
https://item.taobao.com/item.htm?spm...cket=12#detail

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Old 12-09-2019, 02:18 PM   #2970
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Curious how clean the air comes out from my old XiaoMi Pro. Not bad. Still working well. I thought not possible to achieve 0 anymore.


Last edited by Lucky177; 12-09-2019 at 02:24 PM..
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