GC MultiGas XE

This is a wonderful air purifier. I've had it running constantly since I received it a couple of weeks ago. It started making a big difference in a couple of days. My allergy symptoms have virtually disappeared (indoors at least). It is obviously removing the pollen, dust and mold from the air in my home. I can see the difference with the dust, and I can feel the difference with the other allergens. The gas/odor filter also works very well. A neighbor's cooking smells are often unpleasant and strong -- this filter made them disappear. The unit is very quiet on the middle and lower speeds, and not bad on the higher speeds. This Swiss-made air purifier appears to be very well made. The materials and construction appear to be high quality. It is an expensive item, but if you live in a region where there is year round pollen, dust and mold, and you are allergic to it all, this is definitely worth the investment. But BEWARE: if you do not purchase this item directly from the manufacturer, or if you select a seller on the Amazon site that is not an authorized dealer, your unit will have no warranty at all. The seller I selected when I bought this unit on Amazon was an Authoruzed dealer, but somewhere along the way, my unit was sold by a different seller that was not even on the Amazon list of sellers. That dealer was not authorized by IQAir. I resolved the issue after speaking with an IQAir rep, who was very professional and attentive. She authorized their basic 1-year limited warranty, but could not offer me their free upgrade to a 10-year warranty. I accepted this offer so I have one year of coverage on this expensive machine, and I did not have to go through the hassle of returning the unit to Amazon, getting a refund, finding another (authorized) seller, and ordering another machine. This air purifier is absolutely worth the investment, but at that price, there should be a warranty. Avoid this problem by either buying direct from the manufacturer or making sure before you buy on Amazon that the seller you select is the one who is your actual seller, and that seller is an authorized dealer. I personally prefer to shop using Amazon Prime. I got my unit at the promised time, very well packaged, and in perfect condition. The seller, when I contacted them by email, was very helpful, but unfortunately was not an authorized dealer. They offered to provide a warranty themselves, but I wanted my warranty directly from the manufacturer. If you prefer, as I did, to buy on Amazon, I think you can go to the IQAir website to find out which Amazon sellers are authorized dealer. I have suggested to Amazon that they make sure someone doesn't switch sellers on you, and that they make it very clear that you are, or are not, buying from an authorized dealer, and the impact that can have on your warranty.

I absolutely love IQ Air. The quality is superior to that of any other air purifier I’ve ever owned. This is my second IQ Air. The best part is that the addition of great quality is their convenience app, which tells you the air quality both outside and inside your home. IQAir GV may seem significant as it’s about 3’ x 14”, the moment you plug it in, you know help is on the way for the quality of air in your place. After about an hour, a massive difference in the air quality is noticeable. Allow your app an hour to update the air quality in your home. With the automatic settings, the speed will adjust as needed, either lowering it when necessary or increasing it when required. It is super quiet. It makes sleeping very easy and much more comfortable knowing that the air is clean and being monitored. The ease of use was crucial when I decided to purchase another IQ Air; the app tells you which filter needs to be replaced. The good news is you have over a year for some of the filters before needing to replace them. The convenience, the quietness, and the fact that it keeps the room cleaner with less dust all enhance my sleep quality. I highly recommend this product for anyone with allergies who wants to improve their quality of life.

I got this because I live downtown in a 30 floor hi-rise with a common vent that spews not only all the heat in the winter and air conditioning throughout the summer but also the germs illnesses and everything else that anyone has living on any of the 29 floors below me. I also developed chronic sinusitis and I was sick all winter every winter. On top of that, being downtown, soot and all other kinds of emissions came through the leaky, rattling old windows that spanned from wall to wall and from ceiling almost down to the floor. Gorgeous view of the city but terrible on my health. I bought this and the reduction in dust in the apartment was amazing. I had sinus surgery that clean out a massive infection and I started getting well very fast. For the next 18 months I was sick only twice and got well without any antibiotics. about a year and a half ago, the landlord finally put in new windows that made everything air tight. I have no idea why but only this winter did my bedroom get so stuffy at night it would wake me up. So I started leaving a window open a bit and did so throughout the apartment. Thinking it was foolish to "clean the incoming air" with the IOAir -- I turned it off. Within 6 weeks I was sick twice (and i am now ), my room became incredibly dusty again and the smell in my room was never fresh. SO I just turned it back on at high speed. But before I did, I changed the pre-filter because it was time. I could not believe the soot and everything that came out of the old one. A young woman with me became instantly sick with sneezing. Well the filter has been changed, the machine has been on at high speed for several hours and the air smells fresh again. But I am now working in my study -- a room I have not been in for the longest time -- and the air does not feel great. So I am back -- to purchase a second unit for my study, a replacement filter and the PF40 kit IQAir Coarse Dust Pre-Filtration Kit ti add another layer of filtration to the bottom of my original unit. I will never, EVER, turn off this unit again. I plan to get one for every room in the apartment (i.e., two more -- one for the living room and one for the dining room.) It's expensive but I guess that really good product that really works is expensive....and worth it.

I've been working with a professional air quality tester who is helping me track down what is causing my serious allergies in my house. He recommended that I purchase an IQAir HealthPro Plus unit to help give me some relief from my allergies as we work to determine their source. After receiving the unit, I followed the instructions and got the unit running. I left it running for over 5 hours and planned on running it much longer, however my allergies increase greatly. I could tell the unit was just stirring up the air. The next day the professional air quality tester got out his commercial grade Particulate Matter (PM) reader. This thing costs $5500 and $500/year to calibrate. It uses laser sensors to read the particulate matter counts at a large range of sizes. We ran a series of tests: 1 at the input of the HealthPro and 6 more around the top of the unit where it outputs the filtered air. We did this at the highest fan speed. This is the same testing IQAir claims they do in their documentation when you receive your unit. We saw only a consistent ~40% reduction in PM. This is nothing close to the 99% reduction that IQAir rated my specific unit as being able to achieve. So, the reality is that the unit is stirring up 60% of the allergens and blowing them around the room. I scheduled a "virtual appointment" with IQAir to discuss the problem. The IQAir representative did not show up for the meeting after waiting for about 10 minutes. I reach her instead on the online chat on IQAir's website. She said we was stuck on a call. She never attempted to reach out to me. I decided to call IQAir's support. Support proceeded to tell me I wasn't using the unit correctly. They said I needed to *open the windows* on my house for the unit to filter properly. Seriously? Open the windows? I informed them that it is 20 degrees outside (and I’m not sure how this filter could work to filter out wildfire smoke if the windows have to be open). I asked why the unit would require the windows to be open. Support wasn't too clear on this point but it sounded as if they were saying the unit cannot keep up with the possible influx of new allergens and i need fresh air coming into the house to help reduce the allergens. This makes no sense to me. Either the filters work at 97-99% or they don't. I was taking all the PM measurements right at the input and output of the unit, not just any place in the room. Nowhere in the IQAir literature do they mention this sort of limitation or best practice of needing to "open the windows." The call ended with support. Later, IQAir’s representative who missed the virtual meeting then called me and sent me back to support, I mean why not, I love punishment. I next spoke with a second person at support and told them the problem again. This time they gave me a whole new story. They ask how big the room was that I tested the unit in and I told them 12x12. Support said I had the unit on too high for the room size and that this would cause the unit to be unable to filter the air passing through the unit properly. I have no idea how the room size could impact the filters since the amount of air passing through the unit would be the same regardless of the room size; it all has to do with how much air the unit’s fan is pushing through the unit, not the size of the room. I asked support if they could explain the relationship of room size to airflow but they couldn’t. I asked them what room size they use in testing, but they didn’t know. So, now I had two completely different answers from support that both make no scientific sense. However, both answers blamed me for the problem by implying that I didn’t use the unit properly. I will again note that nowhere in manual does IQAir tell you that room size can be too small nor that you need to open the windows. Somehow users are supposed to know these obviously important things; but honestly I think these items would make it difficult for anyone to take IQAir seriously and they refuse to print them. In the end, IQAir did offer a full refund and return, which I will be taking advantage of; though the first support representative didn’t even offer this. Only the second one. This leaves anyone considering buying this unit a huge question as to how IQAir makes their claims of any level of filtration. Open windows and only in large enough rooms appear to be factors that must be considered…if you don’t believe in science!

I've had this for 7 months when writing this review. I like this product a lot, and I've actually tested the VOC filter with a VOC meter and it did a pretty good job. I have a roughly 900 sq ft apartment and I've been monitoring the VOC content of the air while this filter is running (mostly on 6), and I can't get it to keep the VOCs within the ASHRAE specs with just having it in the hall with the HVAC air intake. I could try harder, but it is a new apartment with paint that's less than a year old. I would guess (I don't have a tracking system storing data from this sensor yet) that the VOC range is only out of limits about 10-20% of the time. I am not monitoring the dust and particulate (if someone knows of a relatively inexpensive sensor for this please respond!!), but I see a lot of junk in the filters that it's pulling out. There was a bit of a smell coming from the VOC filters when I first began using it, sort of a vanilla type odor, but that's innate to the filter and isn't a bad odor, just peculiar. That odor did not increase the VOC content of the air in any measurable way, and I don't notice it anymore. The wheels make it easy to roll around, and the indicators are very clear. The noise is a little loud, but only when you run it on high. If it starts getting very loud then you might want to check the filters as the more they're clogged up the more power the fan consumes to pull the air through them, and thus more noise. Overall it's a great product if you don't have access to the hvac system to make modifications and install a different HealthPro product. I am very happy with the purchase. Also, the customer support is great. I have spoken with them several times, and they're top notch people. Great product, great support, solid company.

There are two aspects to the "XE" purifier: 1) the actual mechanical unit and it's purifying abilities, and 2) the app control. 1) The air purifying capabilities of this is incredible. We've used cheap air purifiers before and never noticed much improvement. That all changed when we got the HealthPro XE. The quality of the air in the house changed dramatically. Crystal clear. Within hours the "old house smell" was completely eliminated. Pet orders gone. And using an air quality meter confirms that the particles in the air across multiple sizes are pretty much completely eliminated. I was surprised at how quiet it is for it's effectiveness. At first I was skeptical that it would do much given the low velocity of the air coming out of it, but I was wrong. Absolutely incredible, and I am absolutely looking for an excuse to buy another one. 2) The app control works fine, shows indoor vs outdoor air quality, let's you setup schedules or use the "balanced" mode which automatically detects air quality and adjusts fan speed accordingly. We found that balanced mode does not work for orders, though as these are no necessarily particles. With balanced mode, it will keep the fan fairly low and only occasionally increase the speed when we cook something, for example. But with the lower speed, odors are more noticable in the air, even though we've confirmed that the PM1, 2.5, and 10 are all at zero ppm. So, we tend to just keep it at a higher fan speed at all times to get the full effect of mountain fresh, crystal clear air. Ok, maybe I'm being a tad hyperbolic. The air coming from the purifier isn't quite the same as fresh mountain air. It does have a slight oder from the filters themselves. Hard to describe...kind of like a clinical smell you'd find in a hospital where these are used. But it's not offensive, and overall the air quality is noticably better / different than without using it. Only downside is that the app doesn't seem to connect to the device when not connected to the same WiFi network. E.g., I can't turn the purifier on/off when away from the house. It'd be great if we had remote control over the Internet instead of just the local network. I think every house and apartment should have one of these to improve air quality. Seriously, if you can afford it, don't look any further. You will not regret it.

Update: Running 24/7/365 for 5 years this year. No change in performance. Glad I spent the extra money on a quality machine. It has been running 24/7 on the middle setting for 2 years straight. Not a decibel louder, zero problems. The amount of crap this thing inhales is amazing. I have a single cat in the house, pretty sure I’m allergic to it, but the iqair consumes the bulk of the allergens. It is a quality unit, no doubt. The downside, maintenance. The filters are quality as well, and not cheap. I’ll probably spend as much on filters as I did for the machine in the next year or so. I’ve replaced all of the filters at this point, pre-filter multiple times. The filter cost hurts but I’m not going to stop using the machine because of the cost but I can see where it would be difficult for some families; the hyperhepa alone is $200. You can get knock off filters on Amazon but they aren’t that much cheaper, I just go with the real ones. The washable filter machines sound great, but they emit harmful ozone, this machine does not. I’m considering one of those for by my woodstove and I’ll keep running the IQair in my living area. Overall, I’m very happy with the machine. I would be happier if they sold a complete replacement filter bundle for around $100. The filter costs are painful.

I got this multicast air purifier because I have chemical sensitivity and it’s severe and when something gets in the air and bothers me it makes me sick and stays in the air for a long time. So I got this to help clear the air faster and keep the air fresh and clean for me. I also have bad allergies and allergic things so this so far is helping me a lot I think it smells fresh and clean. Although I’m still trying to get past the new chemicals of the machine it self but I put it in a far room for now so it can clean its own smalls out of the air before it gets to me and it’s been ok so far. I love the app and how it revels up at even lower levels and says it unhealthy for sensitive groups at that point makes me feel like someone gets me. I can control from the app and turn it on a manual fan setting or balanced where it runs on low until something gets in the air and it ramps up. I love that it can tell at the low levels even that it needs to clean the air more so the fan goes on full blast. This is a great machine This video is when it detects something and turned up all the way to high levels this is standing right at it so the sound being right at it sounds like this.

I previously owned the older version of this IQAir recently upgraded to this new gen. New model can detect air quality and automatically kicks (unlike the older model, you have to manually turn it up). The HyperHEPA filtration works wonders, eliminating viruses, allergens, and pet dander with ease. Perfect for large rooms, and the WiFi feature makes it super convenient to control. I noticed a significant improvement in air quality within days. Swiss-made quality at its best. Highly recommended!

We live in a basement suite, in an old house, in a city that rains about three quarters of the year. We were concerned we were breathing harmful air (mold specifically) from the various aspects of living in an old house in a very wet climate. Our sleeps would be really choppy and we would experience wheezing and (sorry to be graphic) mucous in our lungs on a daily basis. I knew that it was due to the harmful allergens a mold spores in the air. My friend has many IQ Airs in his home and raves about them, so I bit the bullet despite the high price tag and bought one. Best. Decision. Ever. No more wheezing, no more mucous and the most peaceful sleeps you can imagine. I promise you this will be worth every last penny you pay for it, including the filter cost once the current ones included go bad. This unit is vital if you live in an area with bad air quality. Huge thank you to the people at IQ Air for their high standards and great workmanship. It's very appreciated.

Très satisfait de mon achat. Dans ma région, il y a de plus en plus de problèmes de qualité de l’air. Ce filtreur IQAir permet de conserver une excellente qualité de l’air à l’intérieur et ce, même si la qualité de l’air est mauvaise à l’extérieur. Il s’ajuste automatiquement. Je l’ai mis dans la cuisine, près de la porte patio et il fait très bien son travail. Les filtres sont un peu cher, mais ils durent très longtemps.

Not all replies from sellers are returned by email! Amazon had the replies and I didn't see them at first! This caused some confusion for me!

Der beste Luftreiniger für mich. Bei meiner Gesundheit mache ich keine Kompromisse. Würde immer wieder auf IQAir gehen dafür.