Air purifier?

[WussRedXLi]

Bro WRX,

I was getting ready to hoot the Samsung AX41/40 until i saw your above post and remember seeing you mention a few days back..

"I see. Its a must. If you can help it, spend a little more and get the Sharp FU-Z31 or Sharp A28 at NTUC Xtra. Much more cleaning power...."

You mean you would recommend the FU-Z31 or A28 over the Samsung AX41/40 (despite both having a lower rated flow rate)..?

Sorry for the noob question if you have responded elsewhere..

Thanks again!
Greg

No leh.....I think I recommended the other guy not buying another unit.
Forgot what's the unit.

The Samsung AX40 is the most powerful unit in your line up.

 

[gregtan]

No leh.....I think I recommended the other guy not buying another unit.
Forgot what's the unit.

The Samsung AX40 is the most powerful unit in your line up.

Thanks Bro WRX, in that case it does not seems to make any sense for me to get the retail AX41 version over the online AX40..

My mind is made then

 

[NWT1978]

Went to get dinner... no one put on any N95 masks

Saw some limited stocks of AP on display still in the box at

Etronin Electromart
Blk 510 Bedok North Street 3, Singapore 460510
tel: 6444 7325 / 6445 8935
fax 6444 7961

limited stock of Sharp AP left... being displayed below the TV areas

if u still looking for them... can called to find out the prices and models available

 

[LFC25]

If you intend to keep any window opened, it would be quite ineffective. Very much a waste of the money. I have done the measurements with laser particle counters.

For me, during these long duration haze periods, I filter the whole house with 6 APs. I air the whole house once every 12 hours by opening the wndows for about 1 minute. (high floor here, so quite a lot of wind) More than sufficient and is a good compromise. If not, every 6hrs do a complete air change.

Thanks for the info. Might want to consider a <$200 AP now since it is impossible not to be exposed to all these harmful particles... unless we don't go outdoors.

 

[S1mpleGuy]

Samsung, Sharp, LG all tested to be well below limits. Eg, Sharp is 50X below the limit permitted.

What abt novita??

 

[WussRedXLi]

Thanks for the info. Might want to consider a <$200 AP now since it is impossible not to be exposed to all these harmful particles... unless we don't go outdoors.

The idea is to cut the transient (mins to hrs), daily and annual exposure to a minimum. Our annual exposure in SG is already 2X that of WHO standards, and more than 2.6X that of some countries like Australia.

You spend the greatest number of hours at home. If you are not sensitive to haze (headache, nose/throat symptoms), or do not have any heart/lung/stroke health issues, or you don't have kids/elderly.....is usually not a big problem. But still have not solved the annual exposure problem.

For external haze prevention, you can use N95 mask esp if the walk is long and you need to buy groceries and have heavy plastic bags thus expecting to ventilate a fair bit.

In the office, there is adequate filtration in a grade A office. It does cut the haze particulate matter. Measured before also.

Shopping centres also do cut somewhat ok. But if it's during that 1-hr PM2.5 341 ug/m3 South 6pm episode on last Monday, then all bets are off.
Or last Sunday night also, spiked to about 180-200 ug/m3.


Still, any filtration is better than no filtration. A sub $200 machine still works, just not going to be that smooth around the corners in some areas.

 

[WussRedXLi]

What abt novita??

No tests done on that by scientific test agencies.

 

[WussRedXLi]

Went to get dinner... no one put on any N95 masks

Saw some limited stocks of AP on display still in the box at

Etronin Electromart
Blk 510 Bedok North Street 3, Singapore 460510
tel: 6444 7325 / 6445 8935
fax 6444 7961

limited stock of Sharp AP left... being displayed below the TV areas

if u still looking for them... can called to find out the prices and models available

Evening time after 5PM, all regions 1-hr PM2.5 ok mah.

 

[WussRedXLi]

Thanks Bro WRX, in that case it does not seems to make any sense for me to get the retail AX41 version over the online AX40..

My mind is made then

Enjoy the unit in good health!

A lot of people tell me that I am kee siao.

I find that funny in the context of Singapore? Instead the converse is true. How so?

People can choose to buy conti car like BMW, but scrimp and save and say that a $250 investment in an AP is expensive despite having an infant and also a toddle.
Another lady is into luxury bags (at least 10 Chanels I think). But finally just bought an AP, coz spent some $200+ on various GP and specialist last week.

 

[PS.Hipster]

Will aircon decrease the performance of my Samsung ax40 purifier as it's always blowing cold air in?

Do I need to put it at high so it cleans faster due to incoming outside air or keep it at sleep mode?

Just want to enjoy the benefits of AP.

 

[AngPao]

Saw this AP- AirVita 111m² Air Purifier. Is this good?

 

[Lucky177]

My Honeywell first time, also noticed got some smell liao. The light indicator yet to indicate time to change hepa filter.

This time round really steady. Haha. Going to replace both the prefilter and the hepa filter liao.

Sent from Android Mobile using GAGT

 

[WussRedXLi]

Saw this AP- AirVita 111m² Air Purifier. Is this good?

Such things do not work for current Singapore haze.

 

[WussRedXLi]

Will aircon decrease the performance of my Samsung ax40 purifier as it's always blowing cold air in?

Do I need to put it at high so it cleans faster due to incoming outside air or keep it at sleep mode?

Just want to enjoy the benefits of AP.

Yes, aircon cold air could "seep out" under the door gap and correspondingly seep in from the MBR toilet window etc. Due to temperature differences and cold air sinks etc.

That's ok, you'd need a wee bit of air exchange, prevent serious build up of CO2 esp with 3 pax in the room etc.

Keep the AX40 in high. You won't use up the filter more in HIGH coz the air inside the room is already very clean. Electrical consumption is very low for the airflow, only ~ 27W measured.

The common complaint is that there is no medium mode in the AX40. Actually there is, if you switch to Auto, it would run in medium for 1 minute or so......before it throttles down to low.
So there is a medium, but really don't know why they would not implement a medium speed.

Air purifiers should have at least a 4 speed fan setting.

 

[WussRedXLi]

Extract: "Given the air quality forecast for the next 24 hours, the agency advised that healthy persons should reduce prolonged or strenuous outdoor physical exertion, while the elderly, pregnant women and children should minimise such activities. Those with chronic lung or heart disease should avoid it completely."

Haze conditions improve, 24-hour PSI may drop to Moderate range: NEA

Esp since my mother is elderly and is has ischemic stroke risk due to heart arrhythmia.

Here's another recent study. So many of such studies popping up for the past few years.

http://www.medscape.com/viewarticle/848059

Smoke From Wildfires Linked to Cardiac Arrests, Ischemic Events

Amy Reyes
July 15, 2015


MELBOURNE, AUSTRALIA — Exposure to the smoke from wildfires that hit the southeast region of Australia in December 2006 and January 2007, specifically to particulate matter at high PM2.5 concentrations, was associated with an upswing in out-of-hospital cardiac arrests in men and ischemic heart disease (IHD) events in women[1]. The findings are from a study published July 15, 2015 in the Journal of the American Heart Association with first author Dr Anjali Haikerwal (Monash University, Melbourne, Australia).

The study shows the associations between cardiac arrest and IHD as a result of exposure to high levels of PM2.5 smoke for up to 2 days. The researchers also found that cardiac arrests and IHD disproportionately affected men and women who were 65 years old and older.




A PM2.5 concentration refers to particles with an aerodynamic diameter <2.5 μm. High concentrations of PM2.5 particulates have been linked to MIs, heart failure, and cardiovascular disease. The American Heart Association characterizes PM2.5 as a risk factor that contributes to CVD mortality and morbidity.

The researchers examined the associations of arrests and ischemic events with PM2.5 concentrations during the 2-month wildfire season, using a time-stratified case-crossover study design. There were 457 out-of-hospital cardiac arrests, 2106 emergency-department visits, and 3274 hospital admissions for IHD.

Researchers found that increased exposure by an interquartile range of 9.04 μg/m3 in PM2.5 over 2 days was associated with a 6.98% increase in risk of out-of-hospital cardiac arrests, with a stronger association shown by men (9.05%) and by adults aged ≥65 years (7.25%).

IHD-related emergency-department visits increased by 2.07%. And after 2 days, IHD-related hospital admissions rose 1.86%, with more women (3.21%) and older adults (2.41%) being admitted to the hospital.

While there have been some studies that examine PM2.5 in terms of wildfire smoke, these are largely based on data from air monitors, which are usually extracted from within metropolitan or regional areas where air monitors are established, according to the authors. That has made it difficult to get an accurate measurement of PM2.5 exposure from wildfire smoke.




To get around this, Haikerwal and colleagues used a novel modeling technique for more accurate readings. They say they were able to provide extremely fine spatial air-quality data for the entire state of Victoria to assess areas affected by wildfires and smoke. They found that PM2.5 levels rose as high as 100 μg/m3, which far exceeds allowable standards of 25 μg/m3 in Australia and 35 μg/m3 in the US for a 24-hour period.

The researchers say more work needs to be done to explain the differences of cardiovascular disease in men and women. Furthermore, "improvements in the understanding of these priority areas is needed so that effective and timely public-health strategies can be developed and implemented to reduce the burden of disease during wildfire events. This will have further implications for setting appropriate air-quality standards, enhancing healthcare infrastructure, and improving timely risk communication and health advice during wildfires."

 

[kimsim]

Lol my AP not receive yet, Haze seen to be gone now

 

[WussRedXLi]

24-hr mean 100 ug/m3 or 24-hr PSI 150 is what we just went through starting yesterday.

24-hr 25 ug/3 = 24-hr PSI 65
24-hr 35 ug/m3 = 24-hr PSI 78

 

[WussRedXLi]

Lol my AP not receive yet, Haze seen to be gone now

On off on off one ba....

Don't worry, use it in good health from now on. Cut your annual exposure also can. We are like 2.6X above Australian standard and slightly more than 2X more than WHO standard.

It's nearly an annual affair anyway. 2014 we hit 131 ug/m3 peak for 1hr (1hr PSI about 192 I think).

2015 we peaked at 1-hr 341 ug/m3 for South. 1hr PSI of 391.
And also got a few other episodes like 223 ug/m3 peak, and 268 ug/m3 peak (1-hr PSI 317)...etc.

Technically there is no 1-hr PSI, at least that's what NEA maintains, due to the majority of studies done for 24-hr period nia. ie there is a 24-hr Index figure, there is a 3-hr Index figure, but there is no 1-hr index figure.

But China does use 1hr AQI.

 

[kimsim]

On off on off one ba....

Don't worry, use it in good health from now on. Cut your annual exposure also can. We are like 2.6X above Australian standard and slightly more than 2X more than WHO standard.

It's nearly an annual affair anyway. 2014 we hit 131 ug/m3 peak for 1hr (1hr PSI about 192 I think).

2015 we peaked at 1-hr 341 ug/m3 for South. 1hr PSI of 391.
And also got a few other episodes like 223 ug/m3 peak, and 268 ug/m3 peak (1-hr PSI 317)...etc.

Technically there is no 1-hr PSI, at least that's what NEA maintains, due to the majority of studies done for 24-hr period nia. ie there is a 24-hr Index figure, there is a 3-hr Index figure, but there is no 1-hr index figure.

But China does use 1hr AQI.

My main concern for my kids, can be less caught an issue, then worth it for pocket money.

 

[WussRedXLi]

My main concern for my kids, can be less caught an issue, then worth it for pocket money.

If school going kids, esp for exam period..... is 1000% worth it.
Haze period starts from around July right up to Oct, for special years it's Nov.

But not sure why, SG still does not have that AP/mask culture. HK has it, USA has it, SK has it, Japan has it.

Even China has it, esp since past 2-3 years the media focus is there. I mean, I agree that China has absolutely horrible and sustained levels, but they are still tiongs. China's AP market is a 14 billion USD one.