IQAir - GCX MultiGas XE

I've used Levoit multiple times for a more economical version, but I love my IQAir GC MultiGas XE (I have MCS) if you can afford it.

Get one Smart Air Blast Mk II (tall) with the charcoal filter (3 lbs). Replace the charcoal filter as often as budget allows (it’s separate from the HEPA). Run it on high 24/7 for maximum CADR. In addition, run an IQAir GC MultiGas XE or GCX MultiGas XE with one of each canister (they hold four total). You will likely have to purchase each type as a four pack. Carbon VOC Canister • High-capacity activated carbon • Best for general VOC removal and chemical fumes Formaldehyde Canister • Impregnated media optimized for aldehydes (especially formaldehyde) • Includes potassium permanganate and other specialized substances Ammonia Canister • Media specifically designed to capture ammonia and amines Acid Gas Canister • Targets acidic gases like hydrogen sulfide, sulfur dioxide, etc. The canisters can be mixed and matched for customized filtration. This is rarely done with the GC platform, but I suspect it’s more commonly done with the GCX platform, which is often used in more industrial or lab settings. Run it on low/medium (Speed 2 or 3) for increased dwell time. I would contact IQ Air for more tailored advice given how expensive it is.

Get one Smart Air Blast Mk II (tall) with the charcoal filter (3 lbs). Replace the charcoal filter as often as budget allows (it’s separate from the HEPA). Run it on high 24/7 for maximum CADR. In addition, run an IQAir GC MultiGas XE or GCX MultiGas XE with one of each canister (they hold four total). You will likely have to purchase each type as a four pack. Carbon VOC Canister • High-capacity activated carbon • Best for general VOC removal and chemical fumes Formaldehyde Canister • Impregnated media optimized for aldehydes (especially formaldehyde) • Includes potassium permanganate and other specialized substances Ammonia Canister • Media specifically designed to capture ammonia and amines Acid Gas Canister • Targets acidic gases like hydrogen sulfide, sulfur dioxide, etc. The canisters can be mixed and matched for customized filtration. This is rarely done with the GC platform, but I suspect it’s more commonly done with the GCX platform, which is often used in more industrial or lab settings. Run it on low/medium (Speed 2 or 3) for increased dwell time. I would contact IQ Air for more tailored advice given how expensive it is.

Thanks for the great tips! The Airpura C700 DLX does look interesting. My biggest problem with Airpura is a complete void of reviews or testing. Do you have any direct experience with them by chance? I'm leaning heavily IQAir mostly bc there's more reviews and they are mostly positive. I know VOC's are hard and expensive to measure but I'm shocked almost no online reviews even do basic VOC tests using airthings or other sensors. I plan to post my 30 day airthings VOC chart before and after I purchase an air purifier to show some sort of evidence if it does anything. Looking at this chart for my levoit, it's very clear that it's great for PM but useless for VOC's. I would think the internet would be covered in tests like this but there is near zero data out there. This makes me very suspicious that trying to combat VOC's is a hopeless marketing scheme to upsell expensive carbon filters. Any company that showed off real world results would have a huge advantage, but none do which makes me think VOC capture is not practical. I do run a dehumidifier in my room every night and average 37% humidity which helps with the musty smell. Whenever I'm away on vacation and don't run it the smell comes back. Unfortunately can't get the landlord to do anything about it.

I got the small r414 I think is the model. So far I haven't been able to detect any impact on VOCs. In fact I'm currently testing if it's making my VOCs significantly worse or not on my air things. I much prefer my levoit Everest air for PM. For VOCs that does nothing, but as far as I can tell neither does the Airpura. I'm probably going to try an IQAir instead of a bigger Airpura next, you might want to consider that one.

I would add IQAir to this, especially the Multigas GCX (emphasis on X, it's superior to the GC which is already a great unit.) Oransi has a standalone carbon model as well. But yeah this list including your comment is very complete. I spent months researching and created a comprehensive brand list and narrowed it down to the exact same brands you mentioned for actual decent VOC filtration. Real world performance is a different issue however and the one thing I would emphasize to OP is that 2,000 is a *lot* of square footage and these types of purifiers are very expensive and if you're looking to consistently purify the entire dwelling then you'd need at least a half dozen 250CFM units to make a difference. It will be expensive and loud and the filters will saturate and need replacement very often if you have a smoker nearby.

IQ Air GC (does vocs, there is a base model for less though)

I bought directly from Green Building Supply in Iowa (amazing customer service & super fast!) but don’t see it there now, so I’ve linked to the models at the manufacturer. One of these is the XE https://www.iqair.com/us/products/air-purifiers/gc-multigas https://www.iqair.com/products/air-purifiers/gc-multigas ETA: I have MCS. We keep one in the bedroom, office and main living space. We’ll get the house unit when we move.

I ordered the IQAir MultiGas, it’s been running all day, still have a crazy headache and sore throat. Feel like death. How are we going to live like this??

Ah crud, bought another MutliGas too. Both have been running all day, one in the living room, one in the bedroom. Headache and sore throat gone at home, but comes on when I’m outside for 10 mins.

If money is out of the question. IQ Air Multigas.

That IQAIR model is a good one for a mixture of particulate and VOC filtration. You can also look at other companies like Austin Air, Aller Air, or essentially any other "steel can" style air purifiers. They'll come with tens of pounds of activated carbon and HEPA filtration but they are loud and expensive. But they are effective.

Pro X does have activated carbon but not a lot. Just a few lbs and they're connected to the HEPA filters meaning if you want to run it under ideal circumstances you'll have to replace the filters when the carbon is full which happens way faster than the HEPA portion. That's one of the nice thing about the IQAIR unit is that it has separate filters. However the PM2.5 particulate is the most immediate danger from the smoke and the Pro X will absolutely breeze through filtering that. It'll probably do ten or more air changes per hour in a room that small.

I have Austins and IQAir MuliGas. The Austins were recommended by a clinic which treats individuals with extreme chemical sensitivities. You want a unit where the fan feeds the filters (1st in the chain) to avoid contamination from the fan itself. No filter is going to eliminate all VOCs.

I have a couple of models: Immunity Machine, Healthmate Plus, bedroom machine. There have been some reviews stating that Austins are slower at clearing a room of particulates. My main concern is VOCs and since I run 3-4 filters in each room that isn't a concern for me. Am now testing the immunity machine. Seems to do a much better job with VOCs, although final results will take a while. What is your concern with IQAair?

I run 3 filters, Austin and IQAIR, in each of 2 spaces - one 300 square feet the other 600 square feet. If the air is poor outside my Purple Air sensors will still show green. However there are so many chemicals in wildfire smoke, particularly if structures have burned, that they don't get everything. I am sensitive to terpenes and right now they don't help with the Camphor tree flowers. So they can greatly improve air quality but don't expect all VOCs to be removed from the air.

I use Austin Immunity machine and iQair GC Multigas units as VOCs are a major concern for me. Not rated.

Iq air MCS hands down. Entertain no other option, its ability to filter is down to the smallest size I can find.

You’re right, my bad. Guess is a colloquial name we’ve given it in my house. I’ve had two for 9 years and can’t imagine life without them. We do vacuum the bottom pre filter every two weeks to prevent dog hair from reducing flow. I do bring a medium sized new version Air Oasis when traveling.

AirDoctor didn’t seem to do anything for me so I sold it and got an IQAIR which seems to help quite a bit. The replacement filters are expensive At the time I bought it it was the only purifier capable of trapping mycotoxins which are like 0.003 microns or 0.03 microns They have a hyper-HEPA filter system I run mine on high 24/7 They are medical grade and even used for clean rooms. They are also the only one I’m aware of that you can break down to properly clean out mycotoxins and take it with you when you leave mold. My humidifier, vacuum and old air purifier will have to go in the trash

Unfortunately the most effective purifiers are not cheap. I bought an AirDoctor because the IQAir was too expensive. It didn’t seem to do anything, so I ended up selling it and buying the IQAir in the end. The IQAir MultiGas was most effective (of the IQAir lineup) against VOCs like mycotoxins last I looked. I supplement with Microbalance EC3 candles

If you looking for filter out dust you need the one has big and powerful fan but if you need one to filter out VOC and a microscopic stuff you better of looking for multi layer filter system with HEPA , I have used Coway for dust and Dyson formaldehyde for microscopic and IQAIR multigas for road traffic pollution next to my apartment!

Have worked through all sorts of filters over the years. Quick answers (just did a longer post to another similar question): A - Dyson, no way B - nothing with an ionizer or anything that tries to sell you on electronic or charged particles. C - the ½ or ¼ inch charcoal filters in most purifiers are worthless. If VOCs are the issue, just open some windows. If you can’t, then check out IQair Multigas, and the Austin Air unit with about 30 pounds of charcoal. D - you have to choose between HEPA (most of those on your list), or medical grade like the IQAir. The later cleans MUCH MUCH more, but they cost 3-4x as much (although their replacement filters last a long time.) Good luck and success!

We have the health pro, the compact, and the multi-gas. Wish we hadn’t the compact (was trying to save some bucks) as the health pro is better. We use the multi-gas near the kitchen. They are all great, but we like the health pro the best. Also, if you are focused on VOCs, then you want the multi gas, or AustinAir makes a great one with about 30 pounds of charcoal if memory serves. Not sure about any of these and Voc’s though. But for particulates, viruses, etc, these units are amazing.

Yes to IQAir - didn’t really help allergies or sleeping until I went past HEPA. These are the best.

IQAir makes some of the best in the industry - each unit is tested and certified, made in Switzerland. The units are quite large though. I have one per floor and s multigas unit in my garage where my workshop and home gym are

IQAir makes some of the best in the industry - each unit is tested and certified, made in Switzerland. The units are quite large though. I have one per floor and s multigas unit in my garage where my workshop and home gym are

I’m located in Los Angeles and am looking for the “best” air purifier to eliminate risks from the wildfire smoke. I’d like to spend no more than $1600 if possible. The room we’d like to cover is our nursery where our 4-week old has been staying. The room is small, probably 150 square feet with an 8 or 9 foot ceiling. I was going to purchase the IQAir GC Gas, as recommended by the Buying Guide, but it looks like it’s sold out or no longer available. Is there anything better than that? I suppose I can get the IQAir GC Gas version with smart capabilities but the extra cost seems to not be worth it based on prior posts. But if that’s the best for the price then I can do that Thanks in advance for your help!!

Thanks so much for your help! I went with the IQAir because it’s 1-day free delivery and I was able to use FSA dollars.

This goes against all advice you may otherwise receive in this sub/youtube videos, but I really find the Dyson BP03/BP04 therapeutic as I recover from mold illness. I had a lot of mold in my home and accompanying lung pain and these dysons are the only thing that give me relief. For context, I also bought the IQ qir healthpro plus and IQ air multigas, and these units were not great at helping my symptoms. I think the main difference is that the dyson actually projects the air and cleans the room whereas many other purifiers might have superior filtering technology but they don't actually get the clean air into the room away from the unit.

I use an IqAir GC, Coway Airmega 400s, and Coway Ap1513. I have invested in these over the years and bought them from wholesale or second hand. They are all heavy-duty purifiers, but anything with a hepa filter will do. Make sure if you are on multiple floors... air purifier on each floor. Make sure it's double the sq.ft of the area you want to filter. If it's not enough.. double up.

Most air purifiers produce more of a rushing air sound, which is different to a large fan. And many can be quite loud on their top settings—examples are IQAir, most Medify Air models, and Winix. You could [build your own Corsi-Rosenthal box](https://engineering.ucdavis.edu/news/science-action-how-build-corsi-rosenthal-box), which is powered by a box fan. See also the related subreddit: r/crboxes If you want to listen for yourself, you can go through HouseFresh's YouTube playlist of air purifier sound tests. A few models may not be available in the USA or have been discontinued. Link: [https://www.youtube.com/playlist?list=PLOuKERCL33BQ1VAbZmUMzY6sY8MYsfO1r](https://www.youtube.com/playlist?list=PLOuKERCL33BQ1VAbZmUMzY6sY8MYsfO1r)

Most common air purifier brands do not have enough nor the right type of sorbent media for gases, vapors, or odors. Sorbent media in air purification = activated carbon, activated alumina, or synthetic zeolites. Heavyweight sorbent media purifiers are very expensive, very loud, and clean the air more slowly than particulates-focused units. This is due to the need for ["dwell time"/"residence time"](https://www.airscience.com/carbon-filters) and the thick media beds. The two major heavyweight brands in the USA & Canada are **Airpura** or **AllerAir**. You want to look for models with 15 lbs.+ carbon canisters. Most standard options for these purifiers are plain/chemically untreated sorbents, which do *not* have high removal capacities for all gaseous "species". This sometimes presents problems where an odor emanates from the sorbent bed (possibly the not-well-adsorbed acetaldehyde) or there's a spike on tVOC monitors despite a reduction in odors. Assuming you don't live near a refinery or have really bad air chemistry otherwise (e.g., from fires), you may want to look into potassium permanganate (KMnO₄) impregnated activated carbon from Airpura or AllerAir. You'd have to contact the respective company first to specify this. KMnO₄ works in part via redox (reduction oxidation) reactions by breaking down certain gases. This can be problematic in unknown and/or highly complex air chemistries where resulting gases may be problematic. It can also off gas as it saturates or loses efficacy.

Your best options are likely the IQAir GC or GCX series purifiers. As for the exact model, you may want to choose one with potassium permanganate (KMnO₄) impregnated carbon or alumina. See [my other comment in this thread](https://www.reddit.com/r/AirPurifiers/comments/1oco7i5/comment/nkoz4yw/).

These are the 3 air filters I personally have. Most air filters only get down to 0.3 microns; these get down to 0.003 microns, which captures mold - which is my main concern - as well as viruses, bacteria, etc.  AirDoctor IQAir AirOasis I also have a Levoit that I like but doesn't capture as small of stuff as the ones above.

IQair is the best. Blueair are made in China and mostly emphasize on looks

I've had IQAir for a few years now. They are bulky, expensive, but Swiss made and do a great job.

I can clearly tell when my IQAIRs are running, I sleep so much better. You might already have good air quality Fixing your furnace filter and central filtration will make a bigger difference than buying an air purifier

I keep my IQAir on medium 24/7 and kick it up to the highest setting after housework or during weather advisories (smoke, wind, high particulate, etc). When I lived in the house I was exposed to toxic mold—after I found out about it, of course—I had several (different brand) purifiers on the highest setting 24/7, and though they looked like hell after switching out the filters about once a month, did an extremely good job with professional AQI tests in the interim before the landlord let me out of the lease.

No idea about Merv 16 since I just buy what they have so I don’t have to think about anything, lol, but I use and travel with their car filter—bringing it into hotel rooms and letting it filter in different areas before going inside. Not sure how well it filters all the air in the room, but it’s a relatively small space, so I’m willing to take the chance since otherwise there would be no filtration. I am thinking about buying one of their large round models for the same reason since it would be easier to store at the side of the car instead of a bulky IQAir and would know the filtration would be on point. We actually have two IQAirs: one upstairs and one downstairs. The lower level is far larger than the second level, but they both seem to do a good job, especially on the highest setting (it does an incredible job filtering after-dinner “food smells” from the kitchen, too!).

Yeah, this is mine as well. 10 year warranty, Swiss made. It’s the only place my family can be when the allergies get really bad.

Wow, I didn’t know!! Thank you for explaining that. Costco had a good deal for shark air purifier and I was considering it. I have one IQ Air but their customer service hasn’t been great and the machine is really bulky, old fashioned with a hefty price tag. I was attracted to cheaper options but I’d get what I paid for it sounds like.

I have Austin Air and IQAir…both terrific. Expensive.

Thank you! I purchased a Austin Air and IQair purifier + Miele C3 vacuum cleaner + Mold cleaner for a full revamp. This may be the root cause of my illness which is terribly affecting my quality of life, going all out! Thanks again!

IQAir and Austin Air are the go-to “buy it for life” purifiers. They really have long-lasting filters and proven performance on my end

IQAir has been a lifesaver with allergies, pollen and mold.

My IQ Airs are BIFL, I had a 15 year old one where the fan motor died. I paid a small price to get it fixed and got it back like it was brand new. They told me their products are not supposed to have an expiration date.

I have had Iqair units for over 10 years. Very happy with their quality and effectiveness.

I've used iqair and alen with quite a bit of success for both. I looked at some of the ones other mentioned and my advice is skip over any of the tabletop ones (that applies to the brands I suggested). I would definitely consider iquair to be bifl. I've yet to have my alen purifier experience any issues over 4 years of daily use, but I'm not sure I'd say it's bifl quality. You'll have to check the energy efficiency for each, but in general, a bigger fan will be more efficient. Whichever one you get, figure out the lowest setting that will cycle the air enough to make your roommate comfortable to save money and keep the volume down. It'll be trial and error, most likely. Having a schedule option will help reduce energy usage. Finally, and the bad news: air purifiers are basically a fan blowing air through some filters, and the more effective filters tend to block more air, leading to lower efficiency. It's a trade-off: efficiency for effectiveness.

Iqair has been great

IQAIR is probably the best

IQair, it’s like a Rolls Royce. Mine are due for filters now and it’s noticeable once it’s off

IQ Air removes odors, but it's very expensive.

Have IQAir and BlueAir. Would recommend the IQAir 1000%!!! BlueAir is ok but the filters are small and replace more often. Build quality of IQAir is amazing, filters last forever, and carbon filter is heavy so there’s a lot of carbon in there to remove odors. 

I have an IQAir and am very happy with it. I’m allergic to my three cats. I don’t remember the cost though, sorry - I remember it was very pricey for me a few years ago.

Some air filters use filters only and some also release ozone (usually called “air purifiers”). Ozone sticks to particles like allergens and causes them to fall to the ground. Ozone is a VOC so we searched for air filters that use filters only. We have the IQ air and are very happy with it. 

If you're looking for the best value for a space that large you should look at the Lifubide Y1000. For what it is it's hard to beat. AirDoctor is fine but their units are a bit noisy and their filters are expensive. iQAir is great but it's noisy on its highest level. Wanted to like MedifyAir but had a horrible customer service experience with them and not only that but they would not confirm that their filters were actually HEPA nor would they tell me the amount of carbon in their filter they said that was a company secret.. so that to me means they lied.. just not a fun company to deal with at all. The Dyson are basically just big fans, they do help with formaldehyde but that's about it, they are way overpriced for what they are and boy their customer service is on a whole new level of hell.. I won't ever recommend a Dyson to anyone ever again. Blue air I'm not a fan of and their always on ionizer isn't wonderful. My favorite air purifiers are Alen Breathesmart 75i, super quiet, moves a ton of air and is also super expensive. I also really like Oransi Mod+ but their air purifier prices have doubled recently so it's hard for me to recommend them anymore, for what they charge there are better alternatives.

When I lived in Asia this was the brand trusted by expats. Cost a lot but 3 sets of filters per unit and robust. We also got independent data to prove it was making a difference as the company I work for wanted us to justify buying so many of them for the expat families at such a high cost.

IQAir makes some really good air purifiers. They are swiss made, 10 year warranty, and actually are HEPA filters (from my research, some companies said they were HEPA filters, but didnt meet the standards). These are pricey though, but filters are changed less often than other cheaper brand air purifiers. These can also filter out gases and viruses.

Get an IQAir...it's medical grade and expensive too, but worth every penny.

I have a smart air blast mini in my living room and an iqair in my bedroom, but on your budget I would replace the iqair with a coway or even do 2 smart blast minis if you have the space

Even though the MERV 1 filters suck, most apartments and homes try to use a MERV 8 or less to prevent airflow restriction which makes the AC system work harder. Unless you have health condition requirements needing the higher MERV. If you truly dont have a budget, then IQair would be good. Or Airpura, Allerair. Best bang for the buck to me is the Costco Winix C909 or Coway (only when on a good sale) Airmega 400. But you would still probably need 2 of the air purifiers to cover the apartment.

I would recommend Allersearch ASDM spray for the pet dander - you can spray it literally everywhere (I’ve not had an issue with it on any surface or fabric/carpet). Their original formula will work, although I have seen they have expanded their line to include more “specific” sprays. They also make laundry detergent and other products for allergies and pet dander sensitivities. As for a vacuum I also recommend using a consumer guide for choosing one. We have a Sebo “Felix” and it has several filters built into it plus the main bag is a thick hepa grade filter. We have had it for over 12 years and we’ve never had any problems. Although it may not be the vacuum for you, I’m sure there are others which would work well too. We have an IQ Air air purifier and again, its performance has been excellent over the past 20 years. No issues at all and it has 3 filters including a HEPA filter. It is a big machine, but it does filter a large area. It has a remote control and indicator lights for the filter changes (which are usually once a year if you’re running it constantly). The downside is the filters can be expensive if you have to replace all at once. I’m sure you’ll have a lot of choices and folks who recommend their favorite products or what’s worked for them. Best of luck!

Great idea!!! I have the same exact one in one of my rooms which does an okay job, but would be wonderful in a space such as a Rivian. I have my IQ Air doing most of the heavy lifting at my home and filters smell out really quickly. Good to use a HEPA filter because N95 really doesn't do much except filter the smoke and a little extra. Why it's called N95 and not N99. It's the small percentage that is really toxic to the body, not the 95%. What we should be worried is about all the chemicals in the air. Majority of homes are old and a lot of them still have potentially lead paints that release toxins in the air. Asbestos, styrene, formaldehyde, crude oil byproducts, plastic fumes, lead, iridium, uranium, etc. IQ Air Health Plus Pro fun video to watch. It filters up to 100x smaller microns, (I believe .003 microns) than standard HEPA purifiers, which is in the Gases territory. [https://www.youtube.com/watch?v=cagRuiyAsio](https://www.youtube.com/watch?v=cagRuiyAsio)

IQAir are hospital-quality air purifiers. Nothing compares to them, full stop. They are pricey, but one is good for an entire floor of your home. We have owned ours for close to 6 years now, and aside from replacing filters it works just as good as the first day.

I’m over in Silverlake with a toddler, trying to find the balance between being safe/smart and not going insane inside. Hugs to you… whatever choice you make will be the right one. Our house has both a whole home water filter and ‘conditioner’ (not a softener) because our water can be pretty hard. I also have an RO filter under the sink. It’s maybe overkill but we installed the RO system first, and I while I can taste the difference in our filtered tap water I don’t know if I’d enjoy drinking it all day! The RO filter we have also restructures and mineralizes the purified water, which has health benefits. I got pretty tired adding mineral drops to our previous water service (which included me going to the water store and carrying two 5 gallon jugs up two flights of stairs 😂😂). I think some people mentioned a whole home RO system, which… do they make those? If my memory is correct (which it rarely works these days) for every 4 gallons of tap water you get 1 gallon of RO water. It’s incredibly wasteful in a state like ours, so I keep it to drinking and sometimes cooking. All filters came from Radiant Life. [Radiant Life](https://radiantlifecatalog.com/water-filtration-systems/) They have a support team that can help you decide which is best for you and your home, and you can run the tests on your filters, when the time comes, and they’ll tell you which membranes to change, etc. I highly recommend! As for air filters, I’ll give a shout out to IQ Air since I haven’t seen them mentioned. They’re big, and ugly 😂 but damn do they work. If you are sensitive or worried about VOCs they’re the best on the market because of the size of their filters. I’m recovering from a toxic mold exposure and (at the time of purchase) they were one of the only filters that captured those particles effectively. Everyone recommends the Air Doctor, including my own doctor lol. I might jump on the discount if they’re still having it! I was unsure about the ozone function, which I don’t want and don’t want to have to remember to turn it off. If anyone can enlighten me whether it matters or not… thank you. I hope this is helpful. I’m so sad that you and our city has to worry about any of this, but I also hope we can rebuild better, stronger, cleaner. 🤗

IQAir by a mile. I have a purifiers from Conway (nice, not expensive), Blue air (prettier, work), Levoit (not worth it IMHO), and IQ Air. By far, the IQ Air is the best of the bunch. Better filters. beefier construction. quiet and powerful. Pricy.

I 2nd this; the IQAir is impressive. I love ours. It's worth mentioning the video [where the CEO breathed the purified air coming out in an enclosed box with a live tear gas canister ](https://youtu.be/ul7ibYAASJU?si=kamtlqMNF2lODc8y)

IQAir is the best but most expensive one

I echo all the Corsi-Rosenthal comments. And YES air filters can help with so much. There are a lot of resources out there to help you understand air exchange per hour that really divides air filters between absolutely worth it or basically air-moving junk. This is one of the most important metrics plus filtration levels. Remember, good air filters also do an amazing job at filtering viruses from the air - flu, Covid, etc. We are a high risk family so we have filters in every room plus an IQAir that basically helps with the entire house.

IqAir It’s not “smart”. But I don’t need it to have WiFi or smart features. I need it to cleanse the air. I have a Levoit in my living room and the only thing that is neat is telling Siri to turn it to 100% or back down to 50%. The IqAir sits in my master bedroom. It smells clean and crisp in the bedroom!

Glad to hear this. I've got an Austin and an IQAir running on my first floor and I feel like I should probably try an AllerAir.

The IQ Air definitely does. But neither of them keeps up very well with serious VOC incursion.

Add IQAir to the list. Lived several years in China and found it the very best of all the others.