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Reddit Reviews
AllerAir. They come at a variety of sizes and price points but all have the same basic design. Even their smaller model does a good job. They can be pricey and it's an investment. They do not make pretty, electronic units with digital readouts or app connections. This is a metal housing (painted white) with a very large, heavy filter inside, and a motor with a mechanical fully adjustable rotating speed dial. I've had good luck with longevity of the filters and I am still on my original filter after a few years. The large, heavy filters take care of some toxic gases as well as your typical everyday allergens, dust, and pollutants. It's a different breed of filter than you get from Winix and Coway and the others who make units with HEPA filters. Their major competitor is Austin Air. The disadvantage of Austin Air is their motor only has three speeds and the medium and high speeds are loud. I had terrible luck with Austin Air filters not lasting long.
For best VOC removal, such as mycotoxins, you need a lot of absorbent media. Checkout Airpura, Allerair, Austin, IQAir. All are in the $1k range. I'm unsure whether any filter will eliminate mold sensitivities. Did see an improvement when upgraded my Austins with Immunity Machine filters but molds still aren't totally controlled. There are clinics which can treat mycotoxin sensitivities. Can be quite expensive.
Allerair is excellent as well and cheaper than many if not all of the others with as good or equal in build and performance.
I have a couple allerair I have been happy with. They have some of the largest carbon filters, work great for smoke and pet odors. I have one in a bedroom with a cat box. If the cat uses it at night the smell is gone in minutes. Allerair, airpura, Austin air are similar units. Metal cabinet, a switch, a fan and a filter. Very little to go wrong.
Check out Allerair they have models with large carbon filters specifically for wild fire smoke. I believe they are also made in Canada. Airpura is another similar one not cheap but I’m happy with the ones I have. I’m in Wisconsin and we have gotten a lot of smoke this year and don’t smell anything inside.
AirOasis is really good. It's one of the few purifiers that I have felt a noticeable difference in the air, despite trying almost every brand on the market now. I've been very impressed with their customer service also. If you're in a high VOC environment, you need a purifier with a very thick carbon bed in the filter like some Austin, AllerAir, and Airpura models do. I have an AllerAir in addition to the AirOasis unit for this reason.
I can only speak from experience. I have purchased 3 AllerAir purifiers and they seem to be mostly metal. I'm guessing parts of the motor may be plastic but I can't really see inside to check. There is no outgassing whatsoever with the ones I've purchased, so I'm happy with that aspect of them. Downside is the unit is very barebones, meaning there's no mechanism that tells you when to replace the filters, so you have to keep track of that yourself.
Always remember to do your research, as the research confirms anything plastic off-gases, so its no good. Make sure the air purifier has a metal body (safest material), then dont fall for paper-thin carbon sprayed filters. The right air purifier will have pounds of carbon for odor, chemicals and VOCs. And finally it must have a Medical-grade HEPA filter for all the particles and dust. Only then it is a good enough air purifier and you will notice a difference. I have a few of the allerair units, have had them for years and works well for my whole home :)
Yeah, totally get what you mean. A lot of the "smart" purifiers out there do a decent job with particles like dust or smoke, but they kinda drop the ball when it comes to odors—especially the rough ones from litter boxes. VOCs and ammonia just don’t get picked up by most of those sensors. Check out **AllerAir** units. They don’t have fancy detection features, but their carbon filters are legit. Like, super thick, industrial-strength carbon that’s made specifically to handle stuff like VOCs and pet odors. I’ve had good luck with them cutting down litter box smells fast—even without any auto-detect stuff. Not the flashiest purifiers, but if you're really after odor control, they’re hard to beat.
The right air purifier is worth it! I have a few of the Allerair units, it is metal body (not plastic, so it doesn't off gas) it has 28 pounds of carbon filter for odors, VOCs and chemical smells, and a Medical-Grade HEPA filter for particles and dust. I immediately noticed a less dust accumulation in my bedrooms! Smaller and cheaper air purifiers are not worth it because it doesnt have the right filters to catch everything in the home, it might easier to get a walmart plastic one, but trust me those are not true air purifiers.
I have a few of the Allerair models, have had them for years, works well for my home :)
Funny coincidence,,, I actually have an allerair unit running at home (we got it for smoke and allergens), and then my wife noticed the exact same brand being used at the salon she goes to. She said the air in there always feels super clean, even with all the hair dye, sprays, and product use going on all day. The salon’s around the same size as yours and also doesn’t have windows that open, and apparently it made a huge difference. What’s great about AllerAir is they’re specifically designed for stuff like chemicals and VOCs. not just dust and particles. They use deep carbon filters, no off-gassing, no plasticky smell, and they’re actually made in North America. If you’re looking for something that can really handle salon air, I’d definitely check them out. Cheers!
Allerair purifiers all the way. I don’t recommend Airpura, their after service is poor i heard
I own 2 allerair units, thinking of buying a 3rd one for my cottage. I love my units. I have been using it for years now, and do filter changes every 2 years. Customer service has been very good to me so far!
Decibles ratings has been very good, use one in the kitchen and main living area on the 2nd floor. It’s backround noise, never been really bothered by it. Obviously if you put the speed on the highest setting, you will definitely hear it. But on medium to low, it is rather quiet
I would strongly suggest allerair air purifiers for anything regarding Voc’c, odors and wildfire smoke. For these pollutants you need an airpurifier that has a lot of cfm and activated carbon. Allerair has these essential requirements. I have used austin in the past however i figured their carbon quality was below par and less quality.
Not enough carbon. Allerair air purifiers that i use has 30-33 lbs of carbon. Strongly recommend for VOCs and odors. Cheers!
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.
AirDoctor doesn't have much activated carbon in their filters... definitely not thick. You're right about IQAir, specifically the GC series purifiers. AllerAir and Airpura purifiers tend to have heavier carbon/sorbent media canisters for the money.
+3 for the AllerAir, I have 3 of them in my home (overkill along with hepa+UV in the furnace) but I love having localized air production for specific living areas. There are zero pollution or smoke smells (I live in smelting and forest fire area) and no cooking or other smells.