They generate ozone as a byproduct, correct?

so small? is it efficient to cover a large area? e.g. living room?

if a small room then ok.. gotta take per square feet coverage into factor too.. u dont wanna wait hours before able to breathe fresh air right?

So does it as efficient as HEPA filter?

Since now a days, those medical manufacturer or hospital are stil using HEPA filter technology, that is why I don't see much advantages over the HEPA efficiency and realibility. What are the average of CADR?

"... all of the ESPs and ionizers tested produced ozone at levels that are below health-based standards for all the tests conducted. None of the devices produced ozone concentrations above 45 ppb during the face tests, and all produced room concentrations below 16 ppb in the room test. All of the devices examined produced less than 3 mg/hr of ozone. ...

Caution also is warranted because introduction of any amount of ozone into indoor spaces may result in increased levels of formaldehyde, ultrafine particles, and other pollutants due to the reaction of ozone with terpenes (fragrance compounds such as pinene and limonene) and other chemicals emitted from modern consumer products and building materials. Additionally, operation and maintenance practices of air cleaner owners have the potential to significantly impact the amount of ozone produced. Recent survey results indicate that most California air cleaner owners operate their indoor air cleaning devices continuously and year round; however, owners typically do not maintain their devices as instructed by the manufacturer. This can lead to excess ozone generation and greater ozone emissions than observed in the tests reported here. "

http://www.arb.ca.gov/research/indoor/esp_report.pdf
Evaluation of Ozone Emissions
From Portable Indoor Air Cleaners:
Electrostatic Precipitators and Ionizers

May I know how much is the Atmosphere replacement filter?

Isn't HPP an electrostatic device? Electrostatic air cleaners generate small amount of ozones as a byproduct. Does their literature mention some special mechanism to prevent the generation of ozone?

"Electrostatic air cleaners (sometimes known as electrostatic precipitators) are highly efficient filtration devices that use electrostatic attraction to remove fine particulate matter such as dust and cigarette smoke from the air. Electrostatic air cleaners ionize (or electrically charge) particles as incoming air is drawn over an electronic cell. The charged particles are then attracted to and trapped by a series of flat collector plates that are oppositely charged, with the particles literally “sticking” to the collection plates until they are manually removed.

Electrostatic air cleaners have two main drawbacks. First, they can produce ozone – a known lung irritant and asthma trigger. While many units produce negligible levels of ozone, there are some brands and models on the market that exceed government safety standards. They may also produce ultra-fine particles from the reaction of the ozone with indoor chemicals (e.g., those from household cleaning products, paints, flooring or carpeting) that some people are sensitive to."

http://www.modernalchemyair.com/technology/electrostatic/

Im looking for air purifier that can remove cigarette smoke / smell instantly.

Any recommended ?

Prefilter = DIY wash, rinse, and dry so basically is FOC
Hepa Filter = RM510.90 , report claim life span up to 5 years.
Odour Filter = RM353.00, report claim life span up to 3 years (but I was using since 2012 till now 2015 still not yet changing)

Thank you very much!

Anyone using Coway Air Purifier Aires AP-1009CH? Any comment..

Plan to put in bedroom..

Can anyone tell me where I can get the honeywell air purifier other than house of air cleaners?

What brand is yours?

sharp air purifier is quiet good can catch mosquito

hey guys, recently bought a sharp FPF30LH.

the purifier emits funny ash-smell everytime i turn it on and lasts about 5 minutes then gone. what is the problem?

sharp email support says its haze and ask me to vacuum the filter and expose it to sun for a few hrs. I vacuumed it but since haze is strong, I think exposing it to sun will only make matters worse if it is indeed caused by haze....

got for Dolomities. Price difference not much and got more functions.

http://www.coway.com.my/ProductOverview.aspx?CID=2

best is Lombok II.. if u can afford 3.3k. Can do installment plan up to x36 months also (0 interest with credit card). Their RM500 yearly service also can do installment plan (this fee includes all service parts, as well as increase warranty +1 more year each time). Maybe that's why Coway is more expensive than those u buy from shops directly.. as the warranty can go on indefinitely as long u renew its yearly service.

Lombok II works fast, best for living room area. My office using this.. and I tested it at my house also. Experience is chun. damn good filter.

Coway also I notice has filters that is fitted with many layers.. anti virus and anti bacteria, pollen, allergens, hepa, etc etc up to 8 layers for their most expensive model.

Dolomities more for medium size hall or room. Using this at my son's babysitter.. coz they dont have air filter there so we put it there for time being. Good model but works slower than Lombok.

This post has been edited by Davidtcf: Oct 20 2015, 10:09 PM

spoke to a friend this evening about Air Purifiers and she said she using Sharp - good.. so is her friend. said can sleep better wo...

thought of getting 1 now with the haze and being a former asthma patient, i think good to put 1 in the bedroom..

problem is i have limited budget..

saw this in the Sales thread - https://forum.lowyat.net/index.php?showtopic=3608583&hl= ...

have back-read posts up to 1 year ago and am not sure if a common brand like those would be good? [NightFelix] [Onemorething] [zeb kew] can share some thoughts?
also the issue is when they change model, the filters they dont reproduce anymore?
how about the problem that it further dehumidifies the room



if its not a value buy, i might as well not buy it.

This post has been edited by KenYoung: Oct 21 2015, 02:19 AM

No. You need a HEPA based Air Purifier. Not a Ionizer. Plasmacluster is a "Marketing Name", is a more simple way to pronounce, we call it Ionizer. You can simply do a quick Google Search on Medical Studies found that, Ionizer doesn't help Asthma / Allergy people, it even worsen your situation. Xiaomi Air Purifier are budget alternative.

This post has been edited by NightFelix: Oct 21 2015, 10:29 AM

https://youtu.be/rriEkdaTD9c


I think this demonstration can convince you.

is amway atmosphere.

I 'm sure soon or later the stock will finish soon, if not act fast

meaning to say Sharp 's are No No?

xiaomi cheapeast i found so far RM790 from Johor.... any1 seen cheaper? but warranty wise a bit 3 months..


This post has been edited by KenYoung: Oct 21 2015, 04:44 PM

RM790 consider cheap. Lazada selling one RM899 with 3months warranty.

One of my friends bought himself one through Agents direct ship from China also RM720. Not sure about how warranty works if ship back to China, so if yours offer local warranty (mean he bear the costs ship back to China repair) means consider good.