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Old 01-04-2016, 10:56 PM   #1336
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Note the word time - ie duration.

If it's a new taxi cabin filled with 40mg/m3 of TVOC (new car smell, gives those hypersensitive folks a headache or dizziness within 5 mins), then yeah forget about the time thingy.

Same thing for PM2.5. I doubt anyone wants to even do shuttle run in such conditions. Forget about 24-hr means.

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Old 01-04-2016, 11:01 PM   #1337
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How low does your drop to ? and how long do you leave it running ?

I guess my living room is too big for XM AP2. Just need more time.

Gonna use it in the room anyway. Just test run for now.
Living room big but 2 hr still strange lor. u try bedroom see how

I using AX40 but got the standalone meter as ours dint have the built in.
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Old 01-04-2016, 11:37 PM   #1338
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Living room big but 2 hr still strange lor. u try bedroom see how

I using AX40 but got the standalone meter as ours dint have the built in.
Just curious, how long does your goes ?

I been thinking may be it running at low mode, as the PSI is low.

Gonna try running turbo mode tomorrow see any different. It is too late now and it's noisy
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Old 01-04-2016, 11:44 PM   #1339
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Just curious, how long does your goes ?

I been thinking may be it running at low mode, as the PSI is low.

Gonna try running turbo mode tomorrow see any different. It is too late now and it's noisy
Mine is 4 room reslae. The living room i close the kitchen door running 2 Ax40 takes 20min to clean.

Edit i see u using low speed. Try turbo for 20min see how. Turbo mode is noisy and i beleive max time is 20min

Last edited by whoooo; 02-04-2016 at 12:03 AM..
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Old 02-04-2016, 12:57 AM   #1340
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XM2 from passion living currently at S$235.89 after all options in, with 3 pin plug
With VIP $20 voucher, buying gift card, and using Singpost credit card, can hit $194.76 effectively.

This excludes any qpoints, or any additional vouchers that may discount more than $20.
And it comes with 6 months warranty.
no stock, i chk liao.....VIP voucher only u have...qpoints not many ppl have....
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Old 02-04-2016, 01:03 AM   #1341
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no stock, i chk liao.....VIP voucher only u have...qpoints not many ppl have....
I got from this guy. Arrive in 5 days. $216.

I was using qoo10 promo voucher $30 discount. So just paid $186.

Probably just wait for q10 voucher promotion and buy.


http://list.qoo10.sg/item/INSTOCK-SU...ectedOptions=;
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Old 02-04-2016, 01:05 AM   #1342
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I got from this guy. Arrive in 5 days. $216.

I was using qoo10 promo voucher $30 discount. So just paid $186.

Probably just wait for q10 voucher promotion and buy.


http://list.qoo10.sg/item/INSTOCK-SU...ectedOptions=;
How to group buy?
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Old 02-04-2016, 01:08 AM   #1343
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Mine is 4 room reslae. The living room i close the kitchen door running 2 Ax40 takes 20min to clean.

Edit i see u using low speed. Try turbo for 20min see how. Turbo mode is noisy and i beleive max time is 20min
Didn't catch the whole convo between you and tanj82 but just the last few threads.....seems like the inability of the XM to clean it down to 0.

Mentioned before in the thread (actually just mentioned within 1hr ago in the 2015 El Nino thread). It all boils down to the ACH / Air Change per Hour.

Different usage needs different ACH as well, haze is good with 2 ACH but 2013/2015 levels you might wanna aim for 5 ACH. Dealing with sinus/allergic rhinitis, you would need comfortably more than 5. 8-10 ACH is not unheard of, plus the usage of the aircon or stand to increase circulation, so that the allergens are blown away from your face during your standard flipping + turning during sleep.

Gunning in Turbo/High mode for 30 mins first helps.....but operating in low mode for prolonged periods means the levels would rise again. Ultimately it also depends on your expectations and also the external haze levels. On hazy days, i am confident to say that it won't be sufficient, perhaps not even medium speed. In 2015 really hazy days, even Turbo mode might not be sufficient without the recommended "sizing" of 5 ACH....in fact leaky houses and sensitive individuals need comfortably more than that. You can see this very clearly with a seperate meter, esp the meters with laser particle counter modules. This phenomenon has been reported from multiple users, not only me, but then 2015 was an oddball haze season.

Xiaomi APs won't do much in low mode. So won't Samsung, Sharp, IQ Air, Blueair in low mode. Good for light sleepers to sleep in though, but that's about it.


Another thing is the Sharp IR module used in stuff like Xiaomi APs and Mfresh APs. I am not sure about how it operates in the Xiaomi and how good is the associated measurement circuitry. But trust me, in the Mfresh it is not very usable...the resolution is not very good in accuracy and the values jumps around. I have 3 laser particle counters and 1 Sharp IR module in another meter, lets just say that the Sharp IR module meter is not really good, just can tell you got haze or no haze. But in a jiffy it does tell you if the haze is dense or moderate though, from what i see the M8088A's readings in 2015 haze.

Edit - But i have seen one implementation of the Sharp IR module in a meter that's used by another user Ximple if i remember correctly. His readings were quite solid and usable during 2015 haze season and provided us with decent readings that were usable and even trackable vs NEA 1-hr concentration values, nearly as good as the laser particle counter meters. Basically it depends on the measurement circuitry that measures the very fine voltage output from the Sharp module. My meter with the Sharp module was just too "coarse".

Moral of the story - many many variables out there.
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Old 02-04-2016, 01:16 AM   #1344
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How to group buy?
Just buy, no need to group buy.. its already ON



As for cleaning down to 0. I gonna try it in smaller room when possible on turbo mode.

I am in 5room hdb. Living room about 2.5x size of bed room. Probably thats the cause.

First time using AP so pardon me. I have no idea of this thing.
But thank to everyone here giving heads up
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Old 02-04-2016, 01:20 AM   #1345
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Just buy, no need to group buy.. its already ON



As for cleaning down to 0. I gonna try it in smaller room when possible on turbo mode.

I am in 5room hdb. Living room about 2.5x size of bed room. Probably thats the cause.

First time using AP so pardon me. I have no idea of this thing.
But thank to everyone here giving heads up
thks....order liao...dunno when come....lol
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Old 02-04-2016, 01:48 AM   #1346
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hello guys, is it still worth it to buy honeywell air purifier and step down transformer from Amazon now or better to get it other brands of air purifier locally?
Why not just get the xm2 from tb, cheap and good, works right out of the box.
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Old 02-04-2016, 02:05 AM   #1347
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Wink

where to get spare filter for XM 2? The carbon type...thks!
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Old 02-04-2016, 02:08 AM   #1348
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hello guys, is it still worth it to buy honeywell air purifier and step down transformer from Amazon now or better to get it other brands of air purifier locally?
Compare ease of getting replacement filters + cost of replacements and decide from there.
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Old 02-04-2016, 02:18 AM   #1349
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xm2

Why not just get the xm2 from tb, cheap and good, works right out of the box.
I cant read chinese, wont not want to deal with 3rd party shipping. So take abit more expensive path.

where to get spare filter for XM 2? The carbon type...thks!
XM2 same filter with XM1. XM1 filter going to be sell at NTUC. Not sure if it is carbon or non carbon type. If I remember correctly the promoter say they going to sell 2 type. $39 and $49. I have not yet read about the different.

Last edited by tanyj82; 02-04-2016 at 02:24 AM..
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Old 02-04-2016, 02:27 AM   #1350
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Just changed hotels and was happy to see a fancy Sharp AP in the room until I opened to check the state of the filter. The pre-filter is filthy and the actual filter not much better. Thanks to all the info I learned from this thread or I wouldn't even have checked the filter lol

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