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 house air purifier

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idoblu
post Aug 20 2018, 07:48 PM

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QUOTE(FoxSeaTiger @ Aug 20 2018, 07:35 PM)
There is a people doing test on xiaomi filter and they found the HPA filter not filter the dangerous particle.
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Link please
Thanks
idoblu
post Sep 3 2018, 04:50 PM

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QUOTE(FoxSeaTiger @ Sep 3 2018, 03:31 PM)
Thanks for the link.

I read this site before - A bias review cleverly written by someone that sells their own brand of air filters
If you read the whole article properly, which the writer hopes you don’t, it says and I quote,

QUOTE
“From this data, my conclusion is that the fan and the filter are fine, but the Xiaomi air purifier has a programming flaw. Even if I use it on the highest setting, I’ll be breathing air far above the safe limit for most of the night. That’s a problem.”


The problem was that he set the Mi air filter to High but after three hours, it set itself back to Auto Mode which reduces the whole air flow. The way he wrote the whole review with big words of how unsafe it is, that makes you and other readers conclude that the Mi filter is no good and unsafe but actually he is only complaining about the auto mode, that he can’t set it to High for more than 3 hours. Only one small line he mentions that there is nothing wrong with the filter itself or the fan which is fine.

QUOTE
How often is the air unsafe?

I calculated the percent of hours that the air was unsafe during the tests using this rule:

After the purifier was on for at least 1 hour, for any hour where outdoor air pollution was unsafe (> 25 micrograms – the WHO 24 hour limit), how many hours was indoor air also unsafe (>25 micrograms)?

The Xiaomi purifier left air unsafe for a shocking 86% of the time. The other similarly sized machines in my earlier tests left air unsafe only 7-16% of the time.”


Anyway I can tell you, the Mi Air Purifier 2S can stay in manual model, set to High if you want. It doesn’t drop to Auto Mode on its own. But totally unnecessary as it has a PM2.5 counter. If the air is already clean, I don’t see why it needs to stay in High Mode but you can if you want.

This post has been edited by idoblu: Sep 3 2018, 04:55 PM
idoblu
post Sep 3 2018, 05:00 PM

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QUOTE(mujinkun @ Sep 3 2018, 04:54 PM)
I using Mi Air Purifier Gen I.

I got this reading so far.

PM2.5 25 (sometime 20).
Allocate its at Living room. Near the door entrance, slightly 3 ft away.
Slightly less dust on the furniture, but still need to clean the dust in a few days, compare to need to clean everyday last time before use.

Is it good or not good?
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Not all dust will be floating in the air all the time. Only lighter particles floating in the air gets clean by air filter
Heavier dusts will settle on the floor, furniture, etc. Airfilters are not vacuum cleaners that can suck dusts from the floors.

Your PM2.5 reading of 20-25 is very clean air already. I set mine to turn on by itself when it reaches 50
Even 50 is consider clean

This post has been edited by idoblu: Sep 3 2018, 05:01 PM
idoblu
post Sep 3 2018, 05:20 PM

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QUOTE(mujinkun @ Sep 3 2018, 05:02 PM)
No wonder some of the dust remains on the furniture.

BTW, you can feel some good breathing if using air purifier.

When got budget, I will purchase for the bedroom and the other rooms.

Or, when the RM improve a bit...ahahaha
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imho i think all air filters with HEPA is good. No such thing as bad. Its just a fan with a layer of HEPA filtration
Its just how big a room it can clean and how fast
I dont believe in buying expensive air filters. Instead of one filter that cost a couple of thousand ringgit, I rather get a few cheap ones and put them around the house.
but thats my layman's way of thinking la.
idoblu
post Nov 5 2018, 11:10 PM

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QUOTE(liewss80 @ Nov 5 2018, 11:07 PM)
Hi, noticed that ur 2S is almost 1 yr already. Does the sensor indicates the need to Chg filter already?  Like the Smart features but short filter life span turned me off.
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hardly used cause i set my pm2.5 to 50 and it will only comes on when it goes above 50
Still got 97% filter left
idoblu
post Dec 28 2019, 12:43 PM

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Cyberbullies he is a seller. You expect him to give an unbiased opinion and say no good? 😅

This post has been edited by idoblu: Dec 28 2019, 12:46 PM

 

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