Core 600

I have a Levoit Core 600 and Core 400. I think they work pretty well, but my air quality is pretty good already. Both purifiers turn the fan to a higher setting when I'm cooking, or if I have scented candles burning for a while. If I leave my front or back door open, it indicates lower quality air, and adjusts the fan speed if necessary. My furnace/AC filter was unusually clean after 3 months of use, and I attribute that to these purifiers. I like having them.

I’d go with two Levoit Vital 200s.  One for your living room and one for your bedroom.  Fantastic performance for the price.  That’s the minimum I’d want for my parents although I got them a core 600s for the living room and 200s for their bedroom.  But if you’re rich rich and want to go high end you can find a good purifier at basically any price point.  

For a large room model iv had and like my core 600 by levoit. For the price it’s been very good The filter isnt hepa but its a very good filter still. And honestly hepa has pros and cons, the pro of it not being hepa is a little more airflow. Things a beast The levoit vital series is very good too for small rooms. Good bang for buck units that have held up well for me. Also filters are not absurdly expensive. Pricy but the cost to run is less than other units

I have a vital 100s in my bedroom. Its great. And one core 600 for the house, that is in way to large of an area but it does what it can and does a fairly good job

Sortof.  But for the cost there are probably better units.  It also depends how big your bedroom is.  It will give 5 air changes per hour (very good air quality) for 297 square feet.   Which is I think about a normal sized bedroom ?  However it only does 198CFM so its only so-so on air power.  Dysons are know for being quiet and aesthetically pleasing...but not moving a whole lot of air.  So you can probably get even better particulate coverage...from a 90 dollar Corsi Rosenthal Box/CF Box..which does around 400CFM on high.(2x the Dyson in power for a fraction of the cost.) Unless you have formaldehyde issue or something you would be spending a lot for money for just so-so CFM power.   Lots of more effective units imo.  You could even get 2 200 dollar units...get way more CFM power...and still save hundreds of dollars.   (Most units around 200 dollars will do around 180-200 CFM, the same as this 1,000 dollar unit.). It apparently has good sensors for air quality but you can get usable air quality sensors on units for 200 a fraction of the cost too.  There's a thread on this sub with people saying the motor was squeezing or making noises and that the quality was random/they had to return some etc.   Id save money + buy things better for moving air + capturing particulates.  (Unless you have formadehyde issue.). Or...you have the money to waste and want to buy one of these + another 200 dollar unit... just to get to excellent air quality. (Which is 6 ACH air changes per hour,.this will do a very good 5 ACH at 297 sq. Feet... But again for 1,000 dollars you can get 6ACH from a 90 dollar Corsi Rosnethal Box.).   The cost-value is very poor imo.  So if your bedroom is small it may give good coverage,  however if your bedroom is big it might only give adequate/OK coverage.    You can get much better symptom relief with other units with more CFM power that will clean more air, more quickly.  More CFM = likely better symptom relief...and this only gives 198 on max.  This site has the numbers: https://housefresh.com/dyson-bp06-review/

Good brands with affordable units are Winix, Levoit, Coway, Alen, and many more.  A Levoit Core 600 for instance is around 280 dollars and does 350 range CFM...almost double the Dyson for 1/4th the cost.  Winix + Coway have great units too.  (Coway used a fungicide/pesticide on the filters for antibacterial coating at very low/safe levels but some may not like that. As well some of either brand could have ionizer so you want it with a toggle on/off in case you dont like ionizer.)  Alens are great and come with a lifetime warranty, if you remain in the filter replacement program.  They look kindof modern imo and are quiet too.  Although they don't move a huge amount of air...an Alen 45i at 450 or so...will still move about as much air as Dyson...with a lifetime warranty...and half the cost.   Dysons are just really over-priced, especially if your needs are just particulate capture.   I am not an expert in VOCs or formaldehyde but it's a type of VOC.  Essentially gasses they are harmful to humans.  Like when you buy a product and it needs to off-gas and smells all plastic-y.  Those are VOCs.  (Although I don't think formaldehyde, I think those are in some plastic items, treated wood, and other stuff.).  Point is you can get one of the best purifiers for VOCs...an Austin Air...for 750, so again much cheaper than the Dyson. So white Hepa material is useless vs gasses.  Gasses need to be absorbed by black carbon strips or charcoal/carbon pellets.  As carbon strips will bind to the carbon in the air.  And charcoal pellets will absorb odors/gasses In the air.  White Hepa material traps particulates.  For allergens you just need white Hepa.  And most affordable units have a little carbon in the filter, and/or some carbon pellets.  (Which Levoit has, I believe most Winix + Coway probably too.). Although an Austin Air will have many pounds worth and be the best at that.   Idk how much the Dyson has but prob not as much as it's price would indicate.  If you had say, a high formadehyde reading in your space, then it might make sense to get that unit.  Otherwise ..you just need allergy control via particulate capture ..so you can save lots of money and get lots of good units for that.  (Which often do have a little carbon/and or pellets to help with smoke/odors m/VOCs too.). Alens are good for both as well, with their best filter.  Idk if you have smoke/odor/VOC issue as you would need to take air quality reading to see your levels.  You likely don't have any serious issue in that regard as apparently there is a low level in most normal houses.  Maybe if you had an old house or something.  You can buy air quality monitors for 50-120 bucks or so and see the TVOC levels.  Again, many units have some carbon/pellets to help with that.  So you don't need the Dyson even if you had high tvocs, as different types will be good for different types of VOC.  That unit is ofc best for formaldehyde.  If you have the money to spend, it's probably a decent unit, however you would probably want to buy another 200-300 unit to get excellent coverage anyway.  So it's kindof a waste of money really imo.  But if you have the money to spend then you can do that.  Just make sure to add another unit for more CFM.  Id instead suggest 2 200-300 dollar units, of any combo of Winix, Alen, Levoit, Coway etc.    which will get you better quality air and way more CFM.  The Dyson is quiet but Alens are pretty quiet too.  And if you get two you can run them a little lower for more quiet ..and still have the same CFM as the Dyson...for half the cost.  Maybe even quieter with 2 units on medium vs Dyson on high.   So sound is a slight edge to Dyson...but there are ways around that, and again ..it's not such a dramatic difference...that's it's worth the cost difference.  The Dyson on high is I think 51 decibels ?  Those other brands are like 64 decibels on high.  And prob like 35 decibels on medium, so even quieter on medium with same CFM or better.   Even a 30 dollar box fan and a merv 13+ filter behind it can get 150ish CFM, almost as much as the quiet/only mid power Dyson. (198CFM.)  You definitely want purifiers and they will make a huge.....difference for you.  But get something more powerful, or for more quiet, 2 medium sized units and run them on low or medium. (It's better to run on high in general but for sleep purposes it's fine maybe.  I got used to my purifier sounds and actually like them all on high when I sleep too ..helps me sleep as good background noise, I don't even notice.  So CFM ratings are all based on high.  So if you run on low you are getting like 25 or 30% of the CFM power.  But ofc the Dyson on high...isn't getting much CFM power anyway.  Any white Hepa unit that moves a lot of air will help capture particulates and help you immensely.  So you can achieve that with much lower price points.  Id get an Alen 45i and a Levoit Core 600, something like that.  But that's cause I own and like those brands a lot.  Winix + Coway have good units too.  And even a box fan and filters do a good job trapping particulates + adding CFM coverage.  Lots of units to choose from, so see what features you like.  (And id use the extra funds to get more units in other areas of your space - for excellent total coverage.) 

As others are saying...that's probably not going to do much.  As they have no listed CFM anywhere (as if they forgot to check the CFM amount ?). I would also not recommend rabbit air as your primary unit, as those do not move much air.  They can be OK for adding additional coverage, esp in a small room where space is an issue.  They also might be a little useful for VOCs, however since they don't move much air...they are not a good first choice for capturing allergens/particulates.  For that you need a lot of CFM power.  So a box fan tied to 4 filters...(Called a CR Box /Corsi Rosenthal box) Gets around 400 CFM power.  You need something like that with a lot of CFM power.  As well possibly mulitiple units depending how big the space.   So a rabbit air only does I think 113 CFM. It's very weak as it doesn't have much of a motor/fan.  It's has good esthetics and is OK if its like your 3rd or 4th unit to add to coverage maybe. But I would definitely not suggest that as your first unit that you are relying on to move + clean a lot of air.   (I would recommend it in a small bedroom, as a 2nd or 3rd if you already have a good purifier in there for general coverage.)  A 90 dollar CR boxfan purifier you make yourself will have about 4x more CFM power, therefore capturing 4x more particulates, and more quickly.  Thus way cleaner air.  Rabbit Airs do have some carbon in filters so can help with smoke/odors/VOCs, but again, powerful particulate capture...is not what's it's for.  So even a Levoit Vital 200 will do around 250 CFM I think, double a rabbit air for around the same price.  Winnix + Coway are also good brands.  List the dimensions of your space and I can give better idea what size units to get.  But CR boxes are the quickest way to get a lot of CFM power for cheap in the meantime.  That thing does look cool though, and if I was a museum I would want them behind every picture...as then you could maybe avoid a louder purifier.  But you might need 30 or 40 of those ...to have same effect as 1 strong air purifier with 400 CFM power.  (As they seem to not even have a fan ?, or very tiny if at all. As well a museum will hopefully have good HVAC system anyway.)  I also have an "art" unit I got for free that is made or sold by a prestigious musuem and can be hung on a wall.  Its a cool unit but decided not to hang it up as normal units are more powerful (and risk it might fall too). So you need strong units that will move a lot of air, or, a lot of units.  But those units you like aesthetically...are not going to do the job, alone.  You need much more.  (I have 8x purifiers in a large 1 bedroom apt. But I also have old smelly/mostly carpets I inherited here so my air is crisp + clean thanks to excellent coverage now.)    

Right, so I don't know your budget, but I believe a CR Box with 400ish CFM would give you around 5 air changes per hour...for borderline excellent air.  (4.8 is good, 6 is excellent.)  So you want to try to get I believe around 400 or even 500 CFM if you want excellent.   A 280 dollar Levoit Core 600 does 350 range I believe so that would be a good main unit.  And then a rabbit air with its 113 additional...would then have you in general In the excellent range.  So some combination like that.   However a CR box is only 90ish bucks as a box fan is 30 bucks and a set of filtrete 1900 filters are around 60 ish bucks.  You pay more for a traditional purifier, a namebrand etc.  And you pay even more for units that are more aesthetics minded like rabbit air and even more so the original unit in post.   So Winnix, Levoit, Coway all good brands.  If you have 1,000 dollars Dyson is fancy and quiet, although doesn't move much air for the 1,000 dollars.   So you can decide how you want to try to get to 400-500 CFM for excellent air, which units you want to get, but also keep in mind it's best to have 1 unit in each room.  So 1 in bedroom important too.  So a big unit in main room/living room, then 1 medium or small in bedroom etc.  (Can also have a 2nd nightstand unit or whatever needed to get to excellent.). So CR boxes the most affordable way to add lots of coverage.  You will pay high premiums for the units with aesthetics...per CFM value that you get.   But they can be fine in addition, and if you have the extra money to spend.   Also consider if VOCs/smoke an issue (then things like Austin Air is good, although 750, and they don't move a huge amount of air, and Alen is a good in-between, with decent CFM but also good for VOCs with their best filter.  And they come with a lifetime warranty if you remain in the filter replacement program.). They also look pretty modern to me, so I really like my Alen 45i.  I suspect you might like that brand, and that will move a lot more air than the rabbit Air.  (So that + a rabbit air might work.).  Another thing is ionizers and they are helpful but if you look at other units just make sure the ionizer can be toggled on/off.  In case it caused any respiratory issue.  Most units like Levoit or Alen don't have that.  Winnix + Coway have good units too, but some have ionizers so youd have to check closely.  But lots of units to pick from so depends on budget + what features you like.  (Some have air quality monitors also and other features etc.) 

An affordable and long lasting one is Alen 45i, around 300-400 bucks and they have a lifetime warranty. (if you stay signd up with the filter replacement plan, with one every 9 or 12 months, your choice.) It has black carbon filter material, and is good overall, would be very good for a 300 sq foot area. Levoits are great for lonevity as I've had mine running continuously for 5 years...still going...most other affordable brands will break or have problems but the Levoits last forever. However, they dont have a huge amoount of carbon, only a litlte in some of the filters I think. If you can afford a lot consider the pricey units others are suggesting. I cant afford that and use a combination of levoits + an Alen + RIA Breezeguard (my best unit overall with carbon fiber layer + UVC + humidifier all built in, however it doesn't have a lifetime warranty but so far its been great after a few years. Around 400 I think. The RIA Breezeguard is bigger + pushes more air and has more options (also app/phone control.) But you prob wont need that so much in a small studio apartment. So if you want longevity/lifetime warranty and good effectiveness for the area you have...the Alen 45i is a good choice imo. If you had a bedroom then add a levoit in there for more coverage etc. The only downside to my Alen 45i is that it doesn't super forecefully move air on high, it just kind of goes pretty steady....but it lasts forever and for your small space, if placed in a decent spot where air is flowing...then would still be very good for now + long term. Add in more units once you move to a bigger space. You can also just buy some black carbon filters (for any brand really) and place a few around if you want to capture more odors, esp smoke. So Ria BreatheSmart great all-around unit with excellent features, good carbon, but unsure about longevity Alen 45i seems to meet all your needs with longevity, carbon, size etc. Levoits awesome for longevity as well (not lifetime warranty but they last a long time) but just so-so on carbon I think. (Don't know thier newer/more pricey models as my 2 100 dollars ones have lasted years....) Ofc I like all 3 brands and use all 3 in my bigger space (+ more in bedroom etc.)

I like Levoits myself, as well as Alen.  I've never had a Coway but people seem to like them too, and they likely perform well.  Dyson I think seems over priced for the performance you get, but it may have some other bells and whistles.  (The fan power on a Dyson for instance wasn't very strong in a comparison I saw, but yet they prob cost the most.  Maybe paying for aesthetics + brand name as well.)    Doesnt mean it's bad, just probably not the best value for what you get.   I also really like my RIA Breezeguard, as that's my current favorite unit I have.  (Don't know longevity yet though as it's maybe a newer brand and Ive had it 2.5 years vs 6+ for Levoits and Alen units usually have a lifetime warranty.)  If I was looking to get another unit I would definitely consider Coway, and if I could afford a Dyson I would consider that too.  But Levoits are affordable, reliable + last years.   Alens same idea but little pricier with lifetime warranty, and built to run continuously. (With yearly filter subscription enrolled.)  So no I don't think there is a consensus ?   As others are saying DIY it which gives good value for the CFM performance you get too. (but has some drawbacks as well.).  For instance I am disabled so I can't be messing with a unit if it has a problem, or putting stuff together, and I don't have the funds to buy a replacement if it breaks.  So I need something preferably  affordable, easy to use, reliable, and with excellent longevity/warranty.   So that's Levoit + Alen.  Other people will have other needs/preferences.  A lot of the well regarded brands units perform decently well, and have various small differences so it comes down to preference a lot. Just avoid random/new/cheap brands as those are the ones I've had break down and have the most problems.   

I keep two levoits in the corners of my living room,  but i also have an Alen in a more central location along a wall where a lot of air passes through.  But Levoits shoot the air upwards and are circular, so they sort of can work in a corner - but you still should have I believe 12 inches of space or so officially. (Mine are maybe 6 inches as I am not relying solely on either of them for coverage.) Ideal coverage i think would be near center of a room,  but also good to have it near where you are most of the time, and ofc its not always practical to put a purifier in the center of a room. (None of mine are.). So along a wall is OK, and in a corner can be OK esp if you have air movement, so I have a box fan next to one my corner levoits, to help circulate the air.  If it's just  put in a cluttered corner where no air will flow - then it won't be able to do as much.  So you will get better results if air can circulate through it with ease.  So put a fan near a corner unit and that can help offset that for instance. (A fan draws air in towards the back of it, and shoots air out the front - thus driving circulation.). So If you have at least some circulation.....corner units can be OK, but you do need at least a few inches of space from wall.  

If you can afford 800 then probably consider AustinAir, people on here seem to hold it in high regard and one of their good units is 750 I think.   I could never afford that, and have never had Air Doctor,.so I can't say anything on that.  I do love my Levoits but they are good affordable units, that last a long time.  If I had 750 I'd probably get an AustinAir, which has very thick filters and good for odors + VOCs.  (Levoits excellent, but more "normal" purifiers that get particles in the air, they have some carbon in filter but not as much as more expensive units.) Mid range options I could afford are Alen Flex (350+) and Ria Breezeguard (370).  Coways are also highly liked on here, but again, haven't had one so can't speak to that.  So for odors/VOCs id prob recommend AustinAir given that you are fortunate enough to afford it.   That's the one that I've seen recommended for odors/VOCs, and In your price range. (Or maybe 2 350 Alens, if you want coverage in 2 spots.).   The AustinAir filters are pretty expensive, some said theirs lasted years and some said they change them once a year.  My Alen Flex ones are about 90-120 and last me around 11 months avg.  And you get a lifetime warranty with the unit if you maintain the yearly filter replacement with them every 9 or 12 months.  But for 800 budget...look into AustinAir.  Edit: it looks like Levoits newer/larger units like Everest Air have a decent amount of carbon filter, so that's seemingly a decent all-around mid range option too.  But for VOC/odors specifically, Alens same price range units will still be a little better likely, and AustinAir even better.  

I second the 45i is a great unit, and they are sold at some hardware stores and such.  However I would also suggest getting the IQ AIr or Austin Air as well - as those are even better for VOCs - with many more pounds of carbon/charcoal pellets to absorb VOC gasses.  Alen will be the the best you can find at a store.  (They are good at both particulate and VOCs, but for VOcs you need to get it with their best filter, which is like 10-30 bucks more.). They also come with a lifetime warranty if you remain in the filter replacement program.  Although they don't move a huge amount of air so getting a Winix, Levoit, or Coway also a good idea to move more air/better/faster particulate capture.   The IQ Air and Austin Air also don't move a lot of air, so it's best to pair them with units that move a lot of air, so you get full coverage.  (Unless you could afford a lot of VOC minded units, but that is ofc very expensive.) So for me I have a mix of various brands with 2 Levoits, an Alen 45i, a Pure Enrichment Elite , RIA, and many others.  Some are good for VOCs, one has ionizer, and some are just strong for Hepa/participate coverage. In a basement id suggest a corsi Rosenthal box/CR Box.  As they don't look aesthetically pleasing....however for about 90 bucks....it will so about 400CFM power....which probably double the CFM power as all of those VOC type units do.  As VOC units move a bit slower....as that is better for the absorption of the gasses the charcoal/carbon pellets material.   Hepa-focused units will move air more quickly....so better for getting particulates and cleaning your air faster ..as they aren't focused in the VOC aspect (but can still help.). So I would definitely get at least an IQ Air or Austin Air for the VOC issue (they aren't in stores) a few Alens are down for general coverage+ effective at both, and then some stronger units for participate capture, which can be any of Winix, Levoit, or Coway.  All perform pretty similarly in tests of participate capture as the top 3 (with Dyson, which is overpriced for what it does but slightly quieter and with better sensors.).  But if you get a 30 dollar box fan and tape it to a set 4 merc 13+ filters...you get 400CFM power on high....which is as much or more than pretty much every consumer purifier under 400-500 bucks.  (And all the VOC units too.).  Lastly, ventilation for VOCs important as someone else said, so box fans great anyway.  Even putting a merv13+ filter behind a box fan...can help with CFM coverage and get you around 150Cfm...which is = to a 160 dollar air purifier about.    

I think the answer is both.  Although you can just put in a merv 15 or 16 filter yourself in the HVAC I believe, so you may not need to spend thousands of dollars there.   But the HVAC only runs at certain temperatures right ?  Vs air purifiers you can run them 24/7 all the time...for constant coverage.    That Lennox system seems cool, it's Merv 16 filters plus a PCO photocataltyic oxidation light purifier system.  Pco is in some purifiers too.  It can kill germs + converts VOCs into water vapor + carbon dioxide.  (VOCs are gasses essentially, stuff that creates odors, and sometimes even stuff we can't smell, that can still harm us.).  Idk what the data is on the light in that Lennox unit though.  Not an HVAC expert.  So idk if that's worth the money or not.  You can get PCO technology in purifiers such as PuraClenz, kaltech and others. Older  Uvc lights can produce ozone, but apparently newer PCO technology may not produce ozone.  One issue thigh, is that it might produce other unknown byproducts, when various chemical VOCs are converted.  So it's a new technology and IDK what possible compounds could occur.  I believe hfs generally considered safe thigh and I have two units.  (I use them sparingly and not daily like my other units.,) I would avoid the ion stuff as that will create at least a little ozone usually.  I am more comfortable with ionization in purifier units that I can easily toggle on/off.  So a larger unit like that might produce a concerning amount of ozone, idk, and it might or might not be easy to turn off.  But those would be things to consider there. The higher the merv generally good.  You want merv13+ I think esp for virus control.  So Merv 15 is very good.   I would avoid merv 11 as that might not capture certain viruses as well.   So it's a good idea to improve your HVAC, but you still want air purifier coverage for when the HVAC isn't running, I believe.  So you can get clean air with a lot of white hepa filter units they will capture virus particles.  Black carbon strips in fitness can Bind with smoke + help w smoke and odors.  Even better units for VOCs/odors will have like 10-15 pounds of carbon)charcoal pellets ..which absorb VOCs in the air.   You can try absorbing VOCs, or blasting them/covering them with PCO.  White hepa filters can't capture gasses so useless there.  But they are excellent at capturing partuculates, allergens, and viruses, if a good Hepa 13 filter I think.   So you have options.   But this a multiple approach as there are multiple needs.  I have 8x units in a large 2 bedroom apartment, each that does various things.  (One has ionizer, some are good for VOCs with carbon pellets, and some are just good for more HEPA coverage/particulate capture.).   I wasn't sure on safety with the PCO so I don't use those often, as that's a newer technology, and I test units before other people do.  If it were me, and I have the extra funds, I would consider the Lennox thing.  But can't say if I would get that or not.  As you can still get excellent air coverage just from people size + amount from air purifiers.   And you can buy yourself a merv 15 or 16 and prob put that in the HVAC yourself.  (Or have them but it's just a 150-180ish dollar filter, you don't NEED to spend all that money to have clean air.) But if you really want to be thorough....and you have the funds....and if you can toggle it on/off if there is an issue...then maybe consider that.  But you still prob need proper air purifier coverage too.   (I would avoid the ion stuff/merv 11 etc.)  Ionization fine in purifiers, for most, but can produce ozone and respiratory issue in some people.  So needs to be able to toggle on/off for first time user in my opinion.  Ionization can help particles bind together and fall to floor so you dont breathe them in as much.  It can help.  But you still then have particles on floor that need to be vacuumed up.  And some bothered by even small/safe amounts of ozone.  So id avoid In HVAC myself, but I do use daily in my main purifier unit.  White Hepa grade filters most important will capture particles, viruses etc.  That's the main thing.   Good units for VOCs/odors are 1,000 dollar IQ AIr and 750 dollar Austin Air.  Among others.  But those don't move a lot of air, slower better for the carbon pellets to absorb odors.  So best to pair with other units that move more air with HEPA. Lots of good brands there like Winnix, Levoit, and Coway, that all perform well, have various sizes, features etc.  

I have a big purifier right next to my computer myself. (but not because of dust but more so because I have 8x purifiers in a 1 bedroom apartment so that happened to be the best spot for it.) So as others said you dont really need to put a purifier there, although it is more useufl to be near you. But also does not need to be. But next to a computer is an OK place, esp if you are using the computer a lot. But fine anywhere in the room thats gets good airflow. As per units Winix + Levoit are both excellent, however they are not known for being quiet per se. I find my Levoit quiet, and Winix scores about the same in decibel testing. However "quiet is subjective to the user, so you can always run them on low if needed. Thing is, if you run it on low you you are losing a bunch of the CFM effectiveness, so I suggest trying to run high and see if you adjust to minor noise. As CFM ratings are based on it running on high speed. (I got accustomed to the mild noise and now its a nice background noise....that I don't even notice.) Or at least run it on high when not in the room, or try to adjust over time, as you get more out of it the more/higher you run it. But certainly on low most units wont make much noise. My Levoits to me are not loud even on high. (Winix should be same.) I would not get a Xiaomi over Winix or Levoit, as I am not that familiar with Xiaomi, although those might be OK too. I do know that Winix + Levoit are both great. So either of those should be fine. Levoits dont have ionizer unless it says Plasma Pro. Some Winix I think might have it, but idk which models as I dont have Winix myself. (You also dont need ionization but if you get additional units you can always try out one of of those, just make sure you can toggle it on/off in case you dont like it.) But you should be fine with any Winix or Levoit.

I would not buy a Xiomi over a Winix unless there was a substantial price difference. (as in almost for free.) As I think it is a brand with less quality, so the units may break more frequently. As well they seem to discontinue units and then people can't find filters to even use them. Thus why they are cheap. The units I have had the most problems with...with units breaking within 6 months to 1 year...are cheap random brands. (they often usually only have a 1 year warranty.) I would strongly recommend Winnix or Levoit, as those are good quality, you wont be able to not find a filter etc. and they perform the best in recent testing. Here is a recent thread on people saying not to buy Xiaomi. [https://www.reddit.com/r/AirPurifiers/comments/1mgg0bo/do\_not\_buy\_xiaomi\_air\_purifiers/](https://www.reddit.com/r/AirPurifiers/comments/1mgg0bo/do_not_buy_xiaomi_air_purifiers/)

For smoke you need the black carbon strips that bind to the carbon in smoke, so you don't breathe them.  And carbon pellets/activated charcoal that absorb smoke + odors in the air.  The normal white Hepa material is excellent for particulates in the air, but does 0 for smoke + odors.   Some purifiers will have a thin strip of carbon, and maybe even a few pellets, but at the low price range it's not much/would only help a little.  So the most cost effective thing....is probably a ventilator with carbon filter, such as that weed growers use.  AC Infinity makes a line of them and a set of both costs around 120-160.  https://www.amazon.com/AC-Infinity-Filtration-Ventilation-Hydroponics/dp/B09NXKGK89 Another affordable idea is a corsi Rosenthal box, but with carbon filters.  Air Fanta Pro sells their unit with carbon filter for about 15 bucks more (180 I think.). So you might want both that + a ventilator with carbon filter. You can also just buy packs of carbon strips for like 15 bucks...and place around your space, especially around doorways some places where air might seep or where air flow.  Or put one behind a fan..and now you have a DIY carbon filter essentially.   Most typical air purifier units are geared towards particulates, so you would be paying a lot, to get only very little carbon effect.  With most units under 200 bucks or so.  Good units for smoke + VOC would be like an Austin Air which is 750.  IQ Air great but like 1,000 dollars.  Mid-range would be Alen which has different sizes like 250-400 range I think.  But a vebtialtor with carbon filter will be far cheaper and probably more effective for smoke + odors.  Likewise CR box.    A good affordable brand in general is Levoit,and they do have a little carbon in their filters usually...but they can only help a little.  You will need much more than what normal air purifiers can give....unless you have like 10 or 15 or 20 air purifiers each with carbon strip + pellets maybe.  So most cost effective by far...are the other options.  

Levoit core 600 is a very nice device, im developing an odor Control System atm, which works for anything besides smoking Joints. Im Vaping with a Tempest 2 and a Tornado mostly ans it seems Like the Prototypes with char coal are removing odor without running a Air purifier, the levoit i still need for growing. the Ocs is much better than any smoke Buddy sploof, i would Like to Post it here at vaporents but im Not allowed yet, If there are some interested Guyz i will try to have it ready for the Market soon

No Infos yet available online, system will be ready in some weeks, in i'll try to Post it here

Levoit Core 600. It’s not the most sophisticated air purifier in the world, but it fits you budget and will definitely help mitigate many of the pollutants

You can use [this calculator](https://housefresh.com/cadr-calculator/) to figure out what size purifier you need in each room. You want something with enough CADR to clean each space 4-6 times per hour. Listed CADR for purifiers is also measured at top speed, so some people like to get slightly larger purifiers than their space requires so they can run them on lower settings, which means less noise. In general, you want a purifier in every room or section of your home if you can do it budget-wise. Air surprisingly doesn’t move that efficiently around corners or through open doorways, so even if something seems like one large space, you really need multiple purifiers if there are any partial walls or larger nooks. I run only Levoit purifiers in my home. They have been great and I love that they offer a ton of different sizes. They are also quiet. I do independent monitoring of pollution in my space and they do a wonderful job of keeping the air clean. Because of my room sizes, I run a Core 600 in the main living room and then Vital 200s in the kitchen, dining room, and all of the bedrooms. Have had this set up for a year now and very happy with it. I just run everything on speed 2 all the time (unless there is a fire or other AQI issue, then I crank them up). Using the auto function on any purifier isn’t recommended because the on board sensors on every brand stink.

It’s generally not recommended to run an air purifier in the bathroom because of the humidity. So I would focus on the bedroom. For 275sqft with 11 foot ceilings you need a minimum CADR of 242. Use [this calculator](https://housefresh.com/cadr-calculator/). Remember, CADR for units is listed for the top speed, which is usually pretty noisy, so most people want a bigger unit so they can run it on a quieter setting. Your room is rather large and the ceilings are higher than most homes. So yes, you need a large purifier. Levoit Core 600 is currently on sale for like $220 and offers a CADR of 391. That would work well for your bedroom and you could run it on speed 2 or 3, which is very quiet. Airmega 350 would be about the same if you want a certified HEPA (although, Levoits filters are very good even though they are not technically HEPA). You’d be maxing out the CADR on the 250 and would need to run it at top speed to get the proper cleaning. So I’d go with the 350 or the Levoit. Also agree with the other comment you need a bagged vacuum with a HEPA filter. Vacuums without bags just spew everything back into air.

It is not going to entirely fix the issue because the cause will be ongoing (cat and smoking), but a Levoit Core 600 in the living room and then a Levoit Vital 200S in the bedroom will help. Filters should be replaced very often, because the smoke is going to gum them up quickly, but the advantage with Levoit is there are aftermarket filters available for cheaper on Amazon. Ideally you’d switch them out every 3 months, but 6 months should be the minimum for your use case. You could also look into an AirFanta 3. It’s a tapeless CR box (easy assembly) that is smaller, but insanely powerful. I think it’s around $175 now with the tariffs. The only drawback is that the filters are proprietary and expensive. There is now a knockoff on Amazon that appears to be cheaper. Cannot speak to its quality, but that might be a more cost effective option. I am all for DYI options as the other commenter was talking about, but traditional CR boxes with tape are gigantic and a pain in the ass to build and change the filters on.

Going to depend on how high your ceilings are, but assuming 9ft you'll need the following minimum CADR from your units for 5 air changes per hour: Living room: 262 Dining: 162 Bedrooms: 100 So for those numbers from Levoit, you'd be looking at a Core 600 or Everest in the living room, a Vital 200s in the dining room, and Vital 100s for the bedrooms. If you have the budget, I'd just get all 200s for the bedrooms too. If you buy slightly overpowered purifiers, you can run them on lower speeds and get better performance without increasing the noise. But the 100s will serve your needs in the bedrooms, but should be run on setting three or higher which will increase the noise.

Levoit core 600 or Levoit Vital 200 if you have a smaller room (like a bedroom). Excellent, affordable purifiers

At 3200 cubic feet you need a purifier with a minimum CADR of 256. CADR is always measured at top speed, which is also the loudest setting, so most people opt to buy a more powerful purifier than their minimum CADR requirement so they can run it on a lower speed. Your room is large, so you need a large purifier. I would recommend the Levoit Core 600 for you. Has a CADR 391, so you could probably run it on speed two or three and get good cleaning without extra noise. Currently on sale for $220. Coway is also a good brand and the AirMega 350 would also work for you ($239). Whatever you go with, don’t get that awful Shark. They are really underpowered and the “never change” thing is absolutely a lie. The whole point of a filter is that it traps the bad stuff, so yes, it needs to be changed out occasionally. Total gimmick and a waste of money.

I have a few vital 200s for smaller rooms and a core 600 for my living room.

For that size room and with your concerns about noise, I’d go with the Levoit Core 600. It’s oversized for the room, but that means you can run it on a lower speed (less sound) and still get the proper air changes. You can just set it to speed 2 and leave it there. Replace the filter once or twice a year and you’re good. If you want something more bougie, SA600 or Blast Mini from SmartAir. Very quiet and good no bs purifiers.

You need to have an HVAC tech out to look at your system. That’s not normal and needs to be addressed to make sure your system is working. How high are your ceilings? The size of that living area is very large and you are not going to get close for your budget unfortunately. The vital 200s is a fantastic purifier. People say negative things about Levoit because they get hung up on the fact they are not HEPA filters, but you don’t need a HEPA to get good cleaning. However, like you said, that unit is too small for your spaces. It could potentially work in the bedroom depending on the ceiling height, but barely. You’d probably be better off with the Levoit Core 600 While air purifiers are awesome and can help a lot, they are not designed to handle pet hair. You really need a good bagged vacuum for that.

Yes, two purifiers for that great room would be better. Actually, three would be best (one for the kitchen, one for dining, and one for the living room). For the whole space roughly you need a CADR of 400. So you could do 2-3 Vital 200s, although two Core 600s would also do the trick. A Vital 200s would work for the primary bedroom. Good thing to keep in mind is that listed CADR is always measured with the unit on top speed and you are probably going to find that noisy on any unit, so it’s best to buy a more powerful unit than you need so you can run it on a lower speed.

If that is absolutely your max budget, I would go Levoit Core 600. It’s still going to be underpowered for that square footage, but it will be the biggest bang for your buck at that price point, including cheaper replacement filters. You should be replacing that filter every 2-3 months if you’re burning wood. You could also go with two Levoit vital 200 units, which might give you better coverage depending on the layout of the space. You need to run whatever you buy on full blast 24/7. Do not use auto mode. It might benefit you to buy a separate pm2.5 monitor just to make sure you are getting things down to an acceptable level. Temtop makes ok monitors that are pretty cheap.

Levoit 200 would be great for your bedroom, but it’s not big enough for your living room. You’d either need two or to upgrade to the Core 600 The Wirecutter has really gone downhill the last few years. HouseFresh is a much better resource. I’ve been very happy with my Levoits. They perform very well and are much more quiet than my old Coway and Winix.

It probably won’t damage the purifier, but it can cause issues with the filter growing mold or developing a smell if you use it in very humid spaces like a bathroom longterm. For a few days, it’s not going to affect it that much. I would however set up a fan in the window to suck air out of the bathroom and then run it while he’s in there and after he’s done. That’s gonna be honestly more effective than a small air purifier and help with the air changes. If your home has an HVAC system though (meaning air is recycled throughout the house), you need an air purifier in your bedroom just to be safe. The Levoit 300 is probably fine for a bathroom type space, but it is generally undersized for most rooms. Better options would be something like the Levoit vital 200, Levoit core 400/600, Coway Airmega, or AirFanta 3.

Please see the stickied thread in this sub about dust. Purifiers are not designed to get rid of dust. Shark sucks. Don’t under any circumstances buy one. BlueAir is fine, but overpriced and the filters are expensive. Levoit is a good, cost effective brand. It is on par with Coway and Winix. You cannot go wrong with a unit from any of those manufacturers.

You are going to need to calculate the CADR needed for each room/area of the house (ie even if the living room and dining room are connected, each needs a purifier if possible). You can use [this calculator](https://housefresh.com/cadr-calculator/) to figure out the CADR. I will save you some time though and tell you the only purifiers close to that budget are going to be from Levoit. They are good machines and come in a variety of sizes. They are not fancy, but get the job done.

Have a core 600 and it’s fantastic!