Air purifier?

[uuyybk]

quotaion of sharp A80 is $490 from parisilk but no stock

 

[blues7]

Meanwhile temporary relief becoz of some rain here and there

 

[WussRedXLi]

quotaion of sharp A80 is $490 from parisilk but no stock

Folks, be advised that the FP-A80 has a CADR of low 300s (ard there IIRC).

So it's quite a fair bit too powerful for your regular HDB bedrooms. Coz it can easily handle 40 sqm. More for your 5-room flat's living room, can handle those big ones @ Tampines/Pasir Ris.

And if I am not wrong also, Best Denki does carry the replacement HEPA filters.

 

[iamnagel]

Folks, be advised that the FP-A80 has a CADR of low 300s (ard there IIRC).

So it's quite a fair bit too powerful for your regular HDB bedrooms. Coz it can easily handle 40 sqm. More for your 5-room flat's living room, can handle those big ones @ Tampines/Pasir Ris.

And if I am not wrong also, Best Denki does carry the replacement HEPA filters.

I'm a little confused with sharp models. They don't state if they can handle pm2.5. Most just state HEPA. Which models are recommended for rooms? Don't really need ionizer or humidifier.

Thanks

 

[WussRedXLi]

I'm a little confused with sharp models. They don't state if they can handle pm2.5. Most just state HEPA. Which models are recommended for rooms? Don't really need ionizer or humidifier.

Thanks

Can just check my post 421 some pages ago. PM2.5 is easy peasey.

http://forums.hardwarezone.com.sg/84364084-post421.html


Was looking through this. HEPA is still v efficient at 0.01 microns.

https://www.sy-klone.com/mm5/graphic..._ASHRAE_52.pdf

Changzhou Airrex Co., Ltd


Size of haze particles
Redirect Notice


Size of haze particles is also predominantly below 0.2 microns!!

Size Haze Clean Photochemical Smog Haze/Clean Photochemical smog/Clean
10-20 nm 1665 1622 2642 1.03 1.63
20-50 nm 6591 3580 9791 1.84 2.73
50-100 nm 4702 1389 8178 3.39 5.89
100-200 nm 2678 631 2704 4.25 4.29
200-500 nm 1030 317 579 3.25 1.82
0.5-1 μm 114 6 20 17.78 3.19
1-10 μm 14 2 5 8.78 3.23
10 nm-10 μm 16797 7547 23920 2.23 3.17

 

[iamnagel]

Uh so all sharp models ok since all state HEPA?

 

[AceSpitz]

Folks, be advised that the FP-A80 has a CADR of low 300s (ard there IIRC).

So it's quite a fair bit too powerful for your regular HDB bedrooms. Coz it can easily handle 40 sqm. More for your 5-room flat's living room, can handle those big ones @ Tampines/Pasir Ris.

And if I am not wrong also, Best Denki does carry the replacement HEPA filters.

Bro.. Just to check.. What is IIRC? Sorry.. A noob here.. And if it's too powerful (oversized), is it bad or good?

 

[Asure7]

"oversized" is fine if you don't mind the price.

Clean up the air faster and/or don't need to use "High" speed.. just medium will do, thus quieter also.

 

[Iandao]

hahahaha... IIRC = If I Remember Correctly

Bro.. Just to check.. What is IIRC? Sorry.. A noob here.. And if it's too powerful (oversized), is it bad or good?

 

[WussRedXLi]

"oversized" is fine if you don't mind the price.

Clean up the air faster and/or don't need to use "High" speed.. just medium will do, thus quieter also.

Well, yeah....this is the spec of the A80 vs the A40. Price is about 1.4X.

55dBA is definitely way too loud for sleeping (compare with the Honeywell 50250 at 57dBA) and I can assure you that it's also too loud to watch TV.

40dBA is just ok, might still be a tad loud for some folks with sensitive ears. Just decent for watching TV at low volume.

So yes, A80 can do 177 CFM at 40dBA, so it's somewhat able to move more air at the same SPL.

Sharp A80
Air Flow CFM (Max/Medium/Silent): 318/177/71
Noise Levels (Max/Medium/Low): 55/40/23


Sharp A40
Air Flow (Max / Med / Low)
Without Humidifying (CFM) 127 / 99 / 28
With Humidifying*1 169 / 127 / 53

Without Humidifying (dBA) 46 / 40 / 16
With Humidifying*1 42 / 35 / 20

** For the A40, I have converted the m^3/hr to CFM

 

[WussRedXLi]

Another thing to note is the A80's size. Not very much bigger but it could be an issue for some in their MBR.

A80
Dimensions and Weight
Overall Width: 15 7/8" (403mm)
Overall Depth: 9 5/8" (244mm)
Overall Height: 24 3/8" (619mm)

A40
Width 375 × 238 depth × height 570

 

[a&w_rootbeerz]

For your Honeywell AirGenius 5, 200W with PSB safety sticker. Safety sticker is mandatory IMO. Then you don't have to worry about the brand, coz its bee tested before. It's as good as it gets.

The good thing is that the AirGenius 5 has low power consumption. Only 40W. CADR of 161. It's very energy efficienct, as good as the Sharps.

You pay a bit more compared to say the Honeywell 50150/50250, but extended daily operation would easily earn back in your Singpower bill in less than 6 months (if left in high mode drawing 40W 12hrs a day, it's 27 cents per day savings - you do the math if in medium etc). They also claim whisper quite operation.

Hey this is really a good info. Thanks!

 

[mikeeeey]

Well, yeah....this is the spec of the A80 vs the A40. Price is about 1.4X.

55dBA is definitely way too loud for sleeping (compare with the Honeywell 50250 at 57dBA) and I can assure you that it's also too loud to watch TV.

40dBA is just ok, might still be a tad loud for some folks with sensitive ears. Just decent for watching TV at low volume.

So yes, A80 can do 177 CFM at 40dBA, so it's somewhat able to move more air at the same SPL.

Sharp A80
Air Flow CFM (Max/Medium/Silent): 318/177/71
Noise Levels (Max/Medium/Low): 55/40/23


Sharp A40
Air Flow (Max / Med / Low)
Without Humidifying (CFM) 127 / 99 / 28
With Humidifying*1 169 / 127 / 53

Without Humidifying (dBA) 46 / 40 / 16
With Humidifying*1 42 / 35 / 20

** For the A40, I have converted the m^3/hr to CFM

A80 noise level quite low. I always set it auto mode, and the low fan speed is barely noticeable. Unless i turn on the shower mode then it will be very obvious.

What i dont like about A40 is the humidifying option, i wont be using it anyway and its just a wasted function with a redundant water tank. Even if i eventually need a humidifier, i rather use a separate device and not risk getting germs/bacteria lurking in the air purifying device. Just my 2cts.

 

[NWT1978]

No one know when is the stock is available even the supplier.

next mth will be a safe bet

 

[NWT1978]

nw............where gt sell har?????????????moi wan hoot!!!!!!!!!!!!!!!!!!!!!sharp...............

all out of stock already...

only online have...but take time to deliver...

still waiting for the store that I bought to stock up their Sharp air purifiers...next mth then came

Haze this year 'could be worse' than last year's record haze

going to consider reserving one... can use the PM of Facebook from the store

 

[WussRedXLi]

A80 noise level quite low. I always set it auto mode, and the low fan speed is barely noticeable. Unless i turn on the shower mode then it will be very obvious.

What i dont like about A40 is the humidifying option, i wont be using it anyway and its just a wasted function with a redundant water tank. Even if i eventually need a humidifier, i rather use a separate device and not risk getting germs/bacteria lurking in the air purifying device. Just my 2cts.

LOW is confirm inaudible one, unless you put your ears right next to the outlet.....even then you'd be straining to hear anything.

Yep, I don't use the humidifying option too. Coz seriously even with the air-con set to 25 deg C (pretty ok to us liao, coz our air-con airflow can be aimed at our bed) it's just nice at about 50% RH. And usually it's the initial 2-3 hours that's ~ 50%, by 3-7am it would rise up to 70%. That's what the hygro says.

Else the tank receptacle and all the plastics need to wipe and wash once every week.

The water wicking wheel is designed such that it is not wet when the humidifying option is OFF.

Basically it turns round and round, the bottom part would be immersed in water. So there is this part where it's flat, that position would be the Humidifying OFF position. Very simple contraption.

 

[WussRedXLi]

Anyway, if anyone is interested in how the air purifier perform in real life, during last year's haze night time with PSI above 200 and in the 300 range (you know, that time...the panic mode and PM comes out with a press conference ), it just takes about 15 minutes for a Sharp KC-840 with E10 (HEPA-10, ie 85% @ 0.3) for it to clean the air from LED = Flashing Amber + RED to double solid green.

Room size is your typical MBR, I got a 8 foot long custom cabinet from floor to ceiling, king size bed, and TV console taking up the space/volume.
With air-con blowing, so that assist in mixing the clean air about I guess.

Now I have changed to the H13 "True HEPA" filter that's used for the A40 liao. Definitely less than 15 mins.

As you can see, it's plenty fast. Probably an A80 would cut it down to 5-6 minutes?

 

[Asure7]

Well, yeah....this is the spec of the A80 vs the A40. Price is about 1.4X.

55dBA is definitely way too loud for sleeping (compare with the Honeywell 50250 at 57dBA) and I can assure you that it's also too loud to watch TV.

40dBA is just ok, might still be a tad loud for some folks with sensitive ears. Just decent for watching TV at low volume.

So yes, A80 can do 177 CFM at 40dBA, so it's somewhat able to move more air at the same SPL.

Sharp A80
Air Flow CFM (Max/Medium/Silent): 318/177/71
Noise Levels (Max/Medium/Low): 55/40/23


Sharp A40
Air Flow (Max / Med / Low)
Without Humidifying (CFM) 127 / 99 / 28
With Humidifying*1 169 / 127 / 53

Without Humidifying (dBA) 46 / 40 / 16
With Humidifying*1 42 / 35 / 20

** For the A40, I have converted the m^3/hr to CFM

Noted that CFM drops quite a bit if humidifying function is turned off.
With both at 40 dBA, CFM of 177 (A80 @ medium) and 99 (A40 @ medium w/o humidifying) is quite a big difference!

Any reason why CFM drops when humidifying function turned off?
The only exception I see is the model KC-D40E... Based on the specs on Sharp's website, it is the only model with CFM increase when humidifying function turned off.

Moreover, "applicable room size" is decreased quite a bit with humidifying on, even though CFM increases. Sounds contradictory ?

 

[iamnagel]

Anyway, if anyone is interested in how the air purifier perform in real life, during last year's haze night time with PSI above 200 and in the 300 range (you know, that time...the panic mode and PM comes out with a press conference ), it just takes about 15 minutes for a Sharp KC-840 with E10 (HEPA-10, ie 85% @ 0.3) for it to clean the air from LED = Flashing Amber + RED to double solid green.

Room size is your typical MBR, I got a 8 foot long custom cabinet from floor to ceiling, king size bed, and TV console taking up the space/volume.
With air-con blowing, so that assist in mixing the clean air about I guess.

Now I have changed to the H13 "True HEPA" filter that's used for the A40 liao. Definitely less than 15 mins.

As you can see, it's plenty fast. Probably an A80 would cut it down to 5-6 minutes?

Looks good enough. K aim for A40.

Thanks

 

[widman01]

in sg, humidifying is zero use la...

sg need dehumidifying instead.