Air Purifiers

i currently have a honeywell 18155 i dont know my rooms exact measurements its an average bedroom i figure its between 500-700 sq feet well the honeywell doesnt seem to be doing the job ive had it since febuary of this year,my room has alot of dust and i know i have to dust but it should make some what of a difference and it hasnt when i clean the hepa filter and replace the pre filter theres dust in there but still i see tons of air born particles in the air…so im looking for a new purifier for my sized room that will do a much better job then this and that either doesnt need filter replacement or doesnt need it often and if it needs replacement every few months it cant be to expensive price of the purifier should be no more then 400 would love to spend less then that but really need something thats going to do the job this one truely i dont see a difference in my allergies or anything else in the air

We recently just moved in to a 2 bedroom appartment and it seems like theres always alot of dust in the rooms. I always open up the window because if i close it, the room would become really hot. Its like summer months now, but still i always clean and wipe my furnitures but somehow alot of dust settles on it. I bought an air purifier yesterday ( honeywell,with the true permanent hepa filter) i can truly feel the difference of the air quality in my room. but iwas wondering if i buy an air conditioner/portable ac for my room, would it be better to get absolutely no dust in my room….because it says that the air purifier would work best if all windows are closed….and if i buy an ac i can do that….please give me any suggestions…thanks. and is there any difference between the window ac’s and portable ac’s.
im planning to buy a portable ac because i dont think i can fix the window ac by myself…and i heard portable ac’s are easier to fix……please let me know…thanks !

All of my family suffers with allergies, I have heard a lot of good things about the Ionic Breese. Recently someone told me that buying that is a waste of money and the Hepa Filter air purifier is better but they did not say why- before I purchase one, I would like some opinions, which is better Ionic Breeze or a Hepa Filter purifier and WHY?? Price is of moderate importance- I want something that will really help with our allergies and is not just a fad. Thank you for serious aswers- I don’t care how long the answer is as long as it is informative and honest.

I am trying to fight against allergens in my house, as my boyfriend is allergic to my cat.

I was considering buying a HEPA air purifier for the bedroom and a larger one for the kitchen/dining room/ living room area of my house. I’m also planning on replacing the furnace soon and could have a HEPA filter installed on the furnace then as well.

Would one of these be better than the other in term of cutting down allergens in the air? Financially, the individual units seem cheaper, but I feel like the furnace filter might be more effective as it would help the whole house.
Good individual air purifiers cost anywhere from 0-0 and I would have to purchase multiple. Getting a top-of the line furnace would cost even more. "Doing both" isn’t really an option.

I’m in the market for an air purifier and I’m not sure which kind I should get. I’ve taken a look at some, and I’m not sure which would fit my needs. I first took a look at some HEPA filters, since I know they filter 99.99% of air particulates. But I also knew that they’re usually loud, you have to change the 0 filter every other month and they take up a lot of energy. I saw a Kenmore Envirosense filter and though it looked nice, but still; the hassle with expensive filters and energy. Before I go on, I should say the men in my family (My dad, brother and me) all have asthma, so we need something that would help with that. We also took a look at some models over at Brookstone. We found a Pure-Ion Advanced Air Purifier. The thing was ugly, but it worked, saying you would have 80% cleaner air in about 8 minutes. This isn’t a HEPA filter, but it had a fan. They say this one helps with asthma, but I’m not sure. Another one from Brookstone was the Blueair HEPA filter, one that was more
impressive than the Pure-Ion. This one came in a tabletop form, but still, the filters and the whopping price tag of 0.
Anyways, after that, we went to the Oreck store because we heard about some kinda amazing deal on TV, letting us try an Oreck Air purifier, vacuum, and a refrigerator purifier. one of Oreck’s points was "You can’t clean the air if you can’t move it", which made perfect sense to me, but there was one trick up my sleeve that made me think otherwise. Anyways, the Oreck one was impressive, requireing no filters and taking up much less noise and space and eating less eletricity than HEPA filters. However, when compared other filters like this one, it ranked the lowest, but I’ve never tried it, so I really wouldn’t know. After that, came our last stop which would be the trick up my sleeve. We went into The Sharper Image immediately seeing their crown acheivement, the Ionic Breeze Quadra, the purifier I had heard about long before the other filters, so I had somewhat of a bias towards it. Like many other purifiers, these use ions and electrons and stuff like that to clean the air
And it game in multiple models, the Tabletop version, the MIDI, the Quadra, the GP, and the Hybrid GP, which is some huge powerful air purifier. The GP caught my eye because It offered deep cleaning without an over-the-top price tag. These however, don’t use fans. So I had no clue how it was cleaning all the air. An explanation from you guys would be helpful. If you guys have owned or used these fiulters, please tell me and how you liked them. Especially if it help with your asthma.
For all the air purifiers mentioned here online, with details:

Pure-Ion by Brookstone: http://www.brookstone.com/store/product.asp?product_code=506840&search_type=search&search_words=air%20purifier&prodtemp=t2&cm_re=Result*R1C1*T

BluAir, sold at Brookstone: http://www.brookstone.com/store/product.asp?product_code=530196&search_type=search&search_words=air purifier&prodtemp=t1&cm_re=Result*R2C1*T

Oreck Air purifiers: http://www.oreck.com/air-purifiers/xl_air_purifiers_choice.cfm
BlueAir fixed link: http://www.brookstone.com/store/product.asp?product_code=530196&search_type=search&search_words=air purifier&prodtemp=t1&cm_re=Result*R2C1*T

The Sharper Image Ionic Breeze models:

TableTop
http://www.sharperimage.com/us/en/catalog/productview/sku__SI719GRY

MIDI:
http://www.sharperimage.com/us/en/catalog/productview/sku__SI853GRY

Quadra: http://www.sharperimage.com/us/en/catalog/productview/sku__SI867GRY

GP: http://www.sharperimage.com/us/en/catalog/productview/sku__SI871GRY

HEPA Model: http://www.sears.com/sr/javasr/product.do?pid=03285500000&vertical=Sears&BV_UseBVCookie=Yes

Since we only took a look at 2 HEPA models, if you know of one or use one that you like, could you tell me about it?

I’m looking for a air purifier that uses a HEPA filter, NOT an ionizer. I live in Perth, W.A. and can’t seem to find them anywhere. I’m talking about ones by brands such as Hamilton Beach. They don’t sell them at Big W, Target or Retravision. I looked on a few online stores that ship to Australia but they only sell a few cheap Ionizers

Help anyone?

My grandmother gave me her old Holmes air purifier but even with a new HEPA filter it blows out air that smells like cigarette smoke. How do I properly clean it so that it smells like it's supposed to?

After a decade of development and tens of millions of dollars, the Silent Night is the only high CADR (standard comparison for air purifier effectiveness - Clean Air Delivery Rate). No moving parts (fan), no filters, half the power of Energy Star, passes UL867 ozone requirement, removes 100% of .3 micron particulate and even 99% of 20 nanomicron bacteria and virus particles - swine flu, sars, bird flu, even anthrax. This is the ultimate air cleaning technology for the 21st century….

I am trying to decide what machine type be best for a low to medium astma person and also another person that is allergy to grass after it cut.

Is a Hepa Filter Air Purifier the best one to get or a Ionizer.
I was planning on getting a Hamilton Beach 04491 True-Air Tower Air Purifier or the Hamilton Beach Air Ionic just needed to know which one be the best. The person is a 5 year old.