Air purifier?

[WussRedXLi]

Nope, don't switch it on all day as it'd just waste electricity. The most effective way is max out the speed for the initial 30 mins or hour. Later throttle back the speed.
That is if you are using an air purifier with at least 5 ACHs.

If underspec then must switch on longer.

Blueair 501 vs IQAir 250

Blueair vs. IQAir Purifiers: And The Winner Is

You can parse (spin?) the data many ways, but here are my conclusions:
•Normal settings: with the typical mid-level speeds, I didn’t see much of a difference. Both took out 60-80% of the particulates.
•Max settings: Again, I found no major difference. Both removed 80-90% of particulates.
•On the worst days with AQI over 500 (!), I still couldn’t get any room under the more desirable 100,000. Scary, no?
•Rooms are different: my bedroom consistently had better air than the den (good news for me)
•Without any air purifiers, the indoor air was 72% of outdoor air



Wuss' notes : That means to say, ACH/Air Change Hour still is the most important factor. You just need to shift heckloads of air, ie high m3/hr figure.

 

[WussRedXLi]

·¢ÉÕÓѼ¶×î×¼×îÎȵÄPM2.5¼ì²âÒÇ£¨¼¤¹â´«¸ÐÆ÷£©-ÌÔ±¦Íø

现货立即发，精密产品，只发顺丰！
发烧友级裸电路三无产品(无电源，无电源线，无外壳)，插手机充电线即可使用，电脑USB口供电不足，接受不了勿拍，谢谢合作！

 

[WussRedXLi]

Got a Sharp FU-Z31E. SGD74.8 @ Cash Convertor.

Filter size is 380mm x 240mm x 32mm. Slightly longer than the KC840/A40 (FZ-200HFS = 370mm x 233mm x 32mm).
On taobao, search for FZ-Y180 for the filter. Go for that seller that i recommended who uses H12 filter media and its 76rmb only. The stock filter is H10 nia.

Quite silent. 44dB on paper, and it seems that way....same dB as the Samsung AX40. Definitely noticeably more silent than the Sharp A28 while pushing 10% more airflow. (180m3/hr)


Edit - for this, i'd recommend getting the FZ-Y180 filters that fits exactly as OEM instead of DIY cutting. Coz the sides of the HEPA filter cavity are a bit weird, if you cut up a bigger up and put it in, the sides would leak, even if you'd use tissue paper to stuff. It's difficult to describe, but just get the exact FZ-Y180 from taobao will do.

2 pcs for rmb 135.24. H12 grade.
http://item.taobao.com/item.htm?spm=a1z09.2.9.10.7gZWUn&id=23339280327&_u=61u0hcib4bdd

Edit - aliwangwang the seller. The 380x240mmx32 has a built in 5mm charcoal layer net filter and a fibreglass 1mm prefilter. So the HEPA portion is just 25mm. I customised 4pcs of 380mmx240mmx32mm thick pure H12 HEPA. Free shipping so that's 270.48rmb for 4pcs or 67.62rmb per H12 HEPA filter.

 

[WussRedXLi]

Also, the filter media is made using PP/Polypropylene material, the usual stuff you'd find on Sharp/Fellowes/Samsung, whereby 1 side is rough and the other side is smooth and has a fluffy feeling to it if you use your nails to run along it (which would cause a slight compromise in the HEPA integrity, but for consumer home use we heck care lah).

I'm seeing if there is the PET/PP 复合网 TYPE.
This would be more sexpensive.

Another seller ....

¶¨ÖÆ¿îÂËÍø HEPA h12¼¶±ð¸´ºÏ²ÄÖʸßЧÂËÍøÎáÓÅÎáÂ˶¨ÖÆרÓÃ-ÌÔ±¦Íø


更新：14年3月18号以后的滤网是改进版的，改善了密封，使用DYLOS 1100pro实测，过滤效率达到99.3%。

更新后的测试视频：hepa12

这款滤网需配合本店的空气净化器使用，H12级别，和blueair的原装滤网材质完全一样，理论上对0.3微米空气中颗粒物的过滤效率为99.97%，实际测试效率为98%~99%。实际测试效果和过程，请在优酷视频搜索用户：吾优吾滤，就可以看到。空气净化器测试过程-å*¾ä¼˜å*¾æ»¤å®šåˆ¶æ¬¾â€”在线æ’*放—优酷网，视频高清在线观看

HEPA滤网通常有PP、玻璃纤维和复合PP+PET三种材质，其中PP+PET复合材料价高但风阻最低。市面上的中低端机器都采用玻纤或者PP材质的HEPA滤网，虽然过滤效率还不错，但是风阻实在太大，使得有效风量大打折扣。我们这款定制的滤网采用复合材料，和PP，玻纤的滤网比较，风阻比大约是1:3:9。材质和瑞典Blueair原厂滤网完全一样，风阻小、效率高、成本高。HEPA滤网通常情况下需要3-6个月更换，雾霾严重的时候，甚至需要30天-40天更换，大牌机数百元一张的滤网怎么舍得说扔就扔。现在有了我们超高性价比的定制滤网，终于可以毫无压力的用完一张扔一张了啦。



如何区别PP材质和复合材质的滤网有一个识别方法: PP+PET复合材料一面光滑，另外一面有绒，用手指搓,会起绒絮。PP滤网双面都是光滑的。

滤网尺寸332*253*25（为纸框周边密封面条压实厚的尺寸）

下面是和定制机原厂滤网的对比，厚度为2倍厚，滤网更厚实。

 

[chuanz]

For a different type of El Nino...
Spain's El Nino Lottery Spreads $666 Million in Winnings - ABC News

 

[Roti Prata]

Hello! Can someone recommend me a good HEPA 13 air purifier that is <$500? Preferably as cheap as possible I have been looking at Sharp Plasmacluster but I don't know which is good and which has HEPA 13. They state HEPA filter, but not sure whether are they E10 or HEPA 13. I'm using it for my room nia, small small room

 

[WussRedXLi]

·¢ÉÕÓѼ¶×î×¼×îÎȵÄPM2.5¼ì²âÒÇ£¨¼¤¹â´«¸ÐÆ÷£©-ÌÔ±¦Íø

现货立即发，精密产品，只发顺丰！
发烧友级裸电路三无产品(无电源，无电源线，无外壳)，插手机充电线即可使用，电脑USB口供电不足，接受不了勿拍，谢谢合作！

DAMN!!
北京to深圳 only takes 12hrs from the time you press the 顺丰快递 courier's button.

2015-01-06 19:15:29卖家已发货

2015-01-06 19:49:00顺丰速运 已收取快件

2015-01-06 21:11:00快件在 北京二拨子服务点, 正转运至 北京集散中心

2015-01-06 22:40:00快件在 北京集散中心, 正转运至 深圳宝安集散中心

2015-01-07 06:19:00快件在 深圳宝安集散中心, 正转运至 深圳黄田集散中心

2015-01-07 06:59:00快件在 深圳黄田集散中心, 正转运至 深圳航城服务点

2015-01-07 08:26:00快件正送往顺丰店/站 深圳钟屋村店

2015-01-07 08:26:00快件正送往顺丰店/站 深圳钟屋村店

2015-01-07 09:53:00在官网"运单资料&签收图", 可查看签收人信息

2015-01-07 09:53:00已签收,感谢使用顺丰,期待再次为您服务

信息来源：顺丰速运

 

[WussRedXLi]

Hello! Can someone recommend me a good HEPA 13 air purifier that is <$500? Preferably as cheap as possible I have been looking at Sharp Plasmacluster but I don't know which is good and which has HEPA 13. They state HEPA filter, but not sure whether are they E10 or HEPA 13. I'm using it for my room nia, small small room

Taka's Best Denki selling the Sharp FU-A80 for SGD459 nia. Used to be SGD599.

They do sell the replacement filters online on taobao. All sorts of quality for you to choose. H12 or H13 is more than sufficient for home use. In fact do not worry too much about H11/H12/H13 used in air purifiers for PM2.5 or hazeuse coz the difference is very very small, the volume airflow makes a much bigger difference.

It's this machine, the equivalent model in China. Feast yourself to the write-ups and pics.

FU-A420S-B_


The same seller as I recommended above, uses H12 PP filter media. rmb164. It's quite a big filter. 390mm x 285mm x 37mm.

ÏÄÆÕ¾»»¯»ú¹ýÂËÍøרҵ¶¨×ö(ÊʺÏFZ-180HFS/FZ-240HFS/FZ-A420HF)-ÌÔ±¦Íø

 

[WussRedXLi]

Hello! Can someone recommend me a good HEPA 13 air purifier that is <$500? Preferably as cheap as possible I have been looking at Sharp Plasmacluster but I don't know which is good and which has HEPA 13. They state HEPA filter, but not sure whether are they E10 or HEPA 13. I'm using it for my room nia, small small room

For your small small room, this probably would be more suitable. In medium speed it would just be barely enough though. For the first 15 mins, put it to high speed to scrub the air nicely esp during hazy days (maybe do that for 30 mins). Note that in high speed, it would be quite noisy and probably unable to sleep with that kind of white noise.

You could get 2 units though, put into medium speed, then low speed for sleeping. There is literally zero noise in low speed mode, even light sleepers can sleep with that dB.

2 x A28 low speed = 1 x A28 medium speed. But the difference in noise level is super duper humongous.


I would recommend 2 x A28 vs 1 x A80.

SGD99. I and others have gotten from Home Revolution (AudioHouse @ Liang Court) before, no worries.

Qoo10 - [Purifier] SHARP Plasmacluster Air purifier - FU-A28E / Haze Protectio... : Home Electronics

Replacement filter, just have to alww the seller to customise the sizing if you don't want to trim it into size. Will be cheap, no worries.

But the stock filter is E10, not H13. But after the first round, you'd be getting from taobao so no worries. Used daily, changing the filter at 6-9 months esp after a bout of haze is > pushing the envelope with a H13 with 18-24 months, which is highly not recommended. It's not a matter of the filter getting clogged or not, but all the mold spores/pollen/bacteria/PM/everything that's filtered and trapped inside needs to be changed out "regularly".


2 units is probably better than 1 unit in a situation like 2014 where you got prolonged periods of haze. Hence you might need to place 1 unit in the living room as well, else really "no life".

 

[WussRedXLi]

For a different type of El Nino...
Spain's El Nino Lottery Spreads $666 Million in Winnings - ABC News

Nothing much....

ENSO Wrap-Up

 

[WussRedXLi]

Hello! Can someone recommend me a good HEPA 13 air purifier that is <$500? Preferably as cheap as possible I have been looking at Sharp Plasmacluster but I don't know which is good and which has HEPA 13. They state HEPA filter, but not sure whether are they E10 or HEPA 13. I'm using it for my room nia, small small room

Stock is H13 filter. REplacement, gotta customise with a 310mm x 282mm x 44mm filter.

Samsung AX40 at SGD279 only. One of the quietest at 323 m3/hr airflow...much quieter than the Sharps. And they do this at only 34W. Compare with the Sharp A28 with 168m3/hr airflow at 49W. Best price performance ratio
Qoo10 - [SUPER TIMESALE]


The only tradeoff is that there is a Max speed and then a low speed. No mid speed. The sleep mode and Auto fan speed is useless.

 

[Roti Prata]

Thank you for your very detailed and long reply! You're truly an air purifier guru (or master)! Do you have a blog or something? It would be great to share your knowledge there

For Sharp, how about those KC humidifier model? Good? Also, I see that FP-E50E has pre-filter as compared to FU-A80E. Is it better? Does it have taobao filter? Any idea?

Is the Samsung one better than all Sharp model?

Ultimately, which is the one best brand, best model, most reliable, and most value for money air purifier that you recommend?

 

[WussRedXLi]

No blog lah, this thread has got excellent info. Probably takes a few days to scan and read through all, but if one is really interested it's doable. Can do it on sleepless nights, maybe it can put insomniacs to sleep also.

FP-E50E design is quite nice. But a wee bit ex. FU-A80E got dust prefilter what, those normal aircon net type.

You'd have to decide for yourself.

Basically, any filter size can be customised on taobao. So filter availability/cost should not be an issue nowadays. It used to be a very big factor last time.

 

[Mr Anonymous]

Get xiaomi's

 

[WussRedXLi]

 

[WussRedXLi]

Get xiaomi's

Never came across this model until you mentioned it.

ÏÖ»õµ±Ì췢СÃ׿ÕÆø¾»»¯Æ÷ÖÇÃ׿Ƽ¼¿ÕÆø¾»»¯Æ÷¿ÕÆøÇåÐÂÆ÷¹ýÂ˼ÒÓÃ-ÌÔ±¦Íø


They cheonged the Japanese Balmuda Air Engine!! Dafug!

Balmuda Air Engine

 

[WussRedXLi]

 

[WussRedXLi]

The Tiongs really got no sense of shame in this talk dragon speak phoenix video.

But I like....

 

[Roti Prata]

No blog lah, this thread has got excellent info. Probably takes a few days to scan and read through all, but if one is really interested it's doable. Can do it on sleepless nights, maybe it can put insomniacs to sleep also.

FP-E50E design is quite nice. But a wee bit ex. FU-A80E got dust prefilter what, those normal aircon net type.

You'd have to decide for yourself.

Basically, any filter size can be customised on taobao. So filter availability/cost should not be an issue nowadays. It used to be a very big factor last time.

Sharp brochure states "No (Deodourising Pre-Filter)" while FP-E50E states "Yes". Not sure what they mean by Deodourising Pre-Filter, but No prefilter.

FP-E50E looks a lot like China's FU-CD20. They have so many more models!

I'm now contemplating between these two models and the Samsung AX40 that you recommend. hmmm...

Once again, many thanks!

 

[WussRedXLi]

Well done Xiaomi, even the advertisement also copy from the Japanese advertisement.