Air purifiers are not complicated machines: Fundamentally, they’re just a dense filter and a fan that draws air through it. But there’s a fair amount of confusion …
34 responses to “Everything an Air Purifier Can and Can't Do”
IMPORTANT: It turns out we spoke too soon in our assessment of HEPA filters' effectiveness in capturing airborne bacteria and viruses. In fact, a HEPA filter can capture close to 100% of bacteria in the air, as well as a smaller percentage of viruses. Many hospitals actually use HEPA filters to reduce the amount of bacteria and other pathogens in the air.
The problem with the Dyson Hot & Cool is that it has a fundamental flaw which Dyson does not seem to know how to fix. I bought one of these and after about 4 months use it developed a high pitched whining noise (rather irritating). Since it was under a 2 year warranty, I had it returned to Dyson and after some hassle, Dyson sent me a replacement, which I’ve been using now for about 3 months and it too has developed the same high pitched whining noise problem. Clearly this product is unreliable and it has been more trouble than it’s worth. Since there is still time left on the 2 year warranty, I shall return it to Dyson, to decide what they intend to do about it. I have lost all faith in this company and regret having bought it. Disappointing. I hope that Dyson just gives me a refund, rather than send me yet another one which will start to whine after about 3 months….. and then what ? Send it back to them again ?
Just brought a wood dresser into the house. A bit moldy, mildew smell. Will a air purifier help with cleaning the air to eliminate the smell while I treat the wood dresser ?
Really important that no one seems to mention is placement within the room. Also, in reality, you are not really cleaning a whole room, depending on size. you should move the unit around the room.. I have wok cooked 10 feet from my Winix,(C 545), only to not see the indicator light change to yellow or red. It is pretty simple, right? These rely on the air getting to them in various ways. drafts within the room or by the circulation fan within the unit moving air. Either method is not very efficient for "cleaning" the air. Ultimately for filtering air in a room you are going to have more than one purifier and set them at different levels (height). The notion of cleaning your whole living room/family room/ kitchen with one unit is a complete joke. Unless you manually move the unit around…
This was very helpful. I am looking for something that removes odors from the air and I was under the impression an air purifier was what I needed. What would be a better machine for removing pet odors? Thank you so much.
If you want to get rid of stinky volatile organic compounds, what you want is an ozone generator! The unstable third oxygen in 03 breaks off and latches readily to oragnic compunds.
but disclaimer, do not run an ozone generator in the same airspace as anything living, as YOU and your lvoed ones are also organic
My honeywell says it DOES eliminate odors… My first night with it on determined that to be a lie… It is now morning and the scent of that vegan sausage is not gone. It was good but I don't want to be smelling it all night. Is there one you recommend that indeed does eliminate odors and not just advertises it falsely? thanks!
One of your major messages is that air purifiers can't filter VOC. HEPA filters can't filter out VOC, but many air purifiers have carbon filters to filter VOC out.
Great video. The trailing off in volume at the end of some of the sentences is tough. And I have some pretty great hearing, overall. Could be that the mix of the background music is a bit too high in some spots. But again, there is a trailing off in volume of the last few words of some sentences. Maybe try to think about avoiding that. Just a tip from some random youtube viewer, but hopefully it can help on production of future videos!
IMPORTANT: It turns out we spoke too soon in our assessment of HEPA filters' effectiveness in capturing airborne bacteria and viruses. In fact, a HEPA filter can capture close to 100% of bacteria in the air, as well as a smaller percentage of viruses. Many hospitals actually use HEPA filters to reduce the amount of bacteria and other pathogens in the air.
The problem with the Dyson Hot & Cool is that it has a fundamental flaw which Dyson does not seem to know how to fix. I bought one of these and after about 4 months use it developed a high pitched whining noise (rather irritating). Since it was under a 2 year warranty, I had it returned to Dyson and after some hassle, Dyson sent me a replacement, which I’ve been using now for about 3 months and it too has developed the same high pitched whining noise problem. Clearly this product is unreliable and it has been more trouble than it’s worth. Since there is still time left on the 2 year warranty, I shall return it to Dyson, to decide what they intend to do about it. I have lost all faith in this company and regret having bought it. Disappointing. I hope that Dyson just gives me a refund, rather than send me yet another one which will start to whine after about 3 months….. and then what ? Send it back to them again ?
What would be a better filter a HEPA filter or running your air through water would the water be a better or worse filter than the HEPA filter
Thank you. This was very informative and well presented not to mention amusing!
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Hi Tim,
What air filters do you use in your home?
Can a HEPA filter get rid of the communist molecules out of the Democrat party?
Your thumbnail is awesome ✌🏽
The last part is concerning
Being so used to it that your body is no longer tolerated to Unpurified air
Um, I own a small pet rescue and I can tell a huge difference with odor when I do and don’t use a air purifier.
Just brought a wood dresser into the house. A bit moldy, mildew smell. Will a air purifier help with cleaning the air to eliminate the smell while I treat the wood dresser ?
You should remove this video to stop the misconception about virus capturing. The size matters, but not in a linearly way.
Really important that no one seems to mention is placement within the room. Also, in reality, you are not really cleaning a whole room, depending on size. you should move the unit around the room.. I have wok cooked 10 feet from my Winix,(C 545), only to not see the indicator light change to yellow or red. It is pretty simple, right? These rely on the air getting to them in various ways. drafts within the room or by the circulation fan within the unit moving air. Either method is not very efficient for "cleaning" the air. Ultimately for filtering air in a room you are going to have more than one purifier and set them at different levels (height). The notion of cleaning your whole living room/family room/ kitchen with one unit is a complete joke. Unless you manually move the unit around…
NASA's testing proves that HEPA can go down to 0.1 micron with 99.97% success rate
This was very helpful. I am looking for something that removes odors from the air and I was under the impression an air purifier was what I needed. What would be a better machine for removing pet odors? Thank you so much.
Addimg a carbon filter will make things little better
No but column is missing
You can see the Rovacs air purifier RV550
https://www.rovacs.com/products/rovacs-air-purifier-rv550-air-purifier-for-home-air-purifier-with-h13-hepa-bilateral-8-in-1-filters-3500-sq-ft-air-cleaner-for-99-97-dander-pollen-smoke-odor-voc-high-tech-particle-sensor-detect-air-quality
Presenter: "I warn you I played Frisbee"
Man: Throws Frisbee
Presenter: misses
Here's a list that helped me out.
"whinyl.com/purifiers-guide/
In the end, I went with #4.
5:42
If you want to get rid of stinky volatile organic compounds, what you want is an ozone generator! The unstable third oxygen in 03 breaks off and latches readily to oragnic compunds.
but disclaimer, do not run an ozone generator in the same airspace as anything living, as YOU and your lvoed ones are also organic
My honeywell says it DOES eliminate odors… My first night with it on determined that to be a lie… It is now morning and the scent of that vegan sausage is not gone. It was good but I don't want to be smelling it all night. Is there one you recommend that indeed does eliminate odors and not just advertises it falsely? thanks!
Thank you, useful, well delivered and succinct!
One of your major messages is that air purifiers can't filter VOC. HEPA filters can't filter out VOC, but many air purifiers have carbon filters to filter VOC out.
Is Meleden a good brand for air purifier?
Me with my 18 purifiers hold the bill
Just get an LG PuriCare Air Purifier, it will filter dangerous gases like paint fumes. It will filter any and all odors
3:15 The reason you're here
is he related to Doug?
Great video. The trailing off in volume at the end of some of the sentences is tough. And I have some pretty great hearing, overall. Could be that the mix of the background music is a bit too high in some spots. But again, there is a trailing off in volume of the last few words of some sentences. Maybe try to think about avoiding that. Just a tip from some random youtube viewer, but hopefully it can help on production of future videos!
have you reviewed an air purifier that uses water filtration? I'd like to know your thoughts on that.
Was all this guess work then? Obviously you didn’t do your research especially on viruses….is the rest of the video accurate????
I need a TOP 1 WORLD GLASS CERTIFIED AIR PURIFIER THAT ACTUALLY CLEANS THE AIR
NEVER BUY A XIAOMI AIR PURIFIER
This is probably the only time the junior writers and the interns got to throw stuff on their senior