AirDoctor - AD5500i (also referred to as AirDoctor 5500i Smart or AirDoctor 5500)
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Based on 1 year's data from Feb 24, 2026 How it works
Liked most:
5
1
"I also have really severe fragrance allergies and it’s been a lifesaver for that."
"In my experience air purifiers do work well but they can take a little bit of time so you’ll still smell it right after your cat goes. ... Currently have the Air Doctor and love it."
"they really work well."
9
0
"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."
"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."
"Got us through mycotoxins, fires, living by a freeway."
6
0
"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."
"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."
"Can attest to MUCH less sickness and allergy issues since we’ve had them (~3 years)."
8
1
"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."
"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."
"I also have Lyme and have had mold. My doctor has recently told me to get an air doctor as it filters down to 0.003 microns while other filters can only do .01 or .3"
5
2
"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."
"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."
"Got us through mycotoxins, fires, living by a freeway."
Disliked most:
1
1
"The off gassing on mine was terrible."
"no meaningful carbon filter which they claim filters VOC's."
0
2
"The Air Doctor has both but the filters are STUPID expensive."
"their filters are expensive"
0
1
"AirDoctor is fine but their units are a bit noisy"
0
1
"The off gassing on mine was terrible."
"It's all cheap plastic construction"
HeavyChocolate0 1.0We have air doctor! But apparently having the ion feature on isn't good for you. But everything else has been great besides that
AutumntimeFall 0.9Air Doctors are overpriced cheap shit. I definitely don't recommend. My only regret is buying Air Doctor 5500 instead of a second Smart Air blast for my main room. The build is cheap, the filters are tiny and outrageously expensive. Worst money I've spent in the last decade. I never never never recommend Air Doctor. You are falling for marketing gimmicks. More CADR is far more important and will do way more for helping MCAS than any BS Air Doctor pushes.
My approach to managing MCAS has been to put a Corsi Rosenthal box in every for the high CADR, and also a commercial HEPA purifier in every room for the finer particles. My MCAS went absolutely wild last winter so I basically tripled the CADR I had in every room and it has helped so much. My favourite unit is definitely the Smart air blast MKII, there is also a mini version. Quiet but extremely powerful, simple, huge HEPA filter that lasts 2 years. Next I would recommend either a homemade CR box or a premade kit. I'm in Canada so I bought a kit from Northbox systems, Clean air kits is the American equivalent. Can't really beat the CADR on these units, especially when taking into account how quietly they are. /r/crboxes If you want a small commerical purifier, can't go wrong with the Costco Winix units. Price can't be beat and I find the sound of these more pleasant than most commerical purifiers. I have 3 for many years now with no issues. I also have an Air Doctor and a Levoit that I don't recommend. Cheaply built, irritating sound.
DanJR92 0.8We have three air purifiers in our home, two australian shepherd dogs. One being an Air Doctor 550 which more than adequately covers our small house. I qould say they don't help with hair. Dandruff and dust yes. We used to be able to see dust in the light shining into the house and not anymore. Still have tons of hair we vaccum.
Unusual-Area-4458 0.8We run air doctors. Paid around $500. Have rhe large one and really helps. Here is a link to one of their sale sites. https://manage.kmail-lists.com/subscriptions/web-view?a=JSzJvS&c=01K99D7ZW0TEPAQFZKYANX4NR2&k=7c7546b396703d6bed221e26a3747366&m=01KGQD8DPCVXCVGMD43GY3CQER&r=01KGW6DTKXQ73SHC90SKY1NB6T
IHaveASloth 0.7IQAir or air doctor pro would be my recommendation. I have both and my environmental allergies are soooo much better. Pet danger is a thing of the past. We also have a gsd.
If I had to pick one, I’d say the IQAir but only by a very small margin. They both rock! The IQAir was ungodly expensive. It replaced my Coway 400S which is now in my basement. We keep the Air Doctor in our bedroom. I really don’t think you can go wrong with either. Then there’s the filter costs. Neither are cheap and I’m not really looking forward to replacing either but that life I guess. 🤪
Keep-Moving-789 0.5These 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.
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.
catsrock22 0.5I also have Lyme and have had mold. My doctor has recently told me to get an air doctor as it filters down to 0.003 microns while other filters can only do .01 or .3 It seems like the best one but it is definitely more expensive compared to a brand like winix that’s carried at Costco. To check how clean / healthy a product is I use this website below. They rated the air doctor as the best as they provided research proving its effectiveness. https://www.mamavation.com/health/best-air-purifiers-virus-ultrafine-particles-allergens.html
Miserable-Caramel795 0.3Air doctor and Austin Air. I need the activated charcoal filters with a HEPA filter because of VOCS.
54317a 0.2i love our AirDoctor! the units go on sale occasionally but the filters unfortunately never do. it works extremely well for smoke, cooking odors, regular dust/particulates. i’ve had mine for 3 years and have had zero issues with it. you can vacuum the first filter ever month (or more often if needed) and then there’s a carbon filter and hepa filter that are replaced at different intervals depending on air quality.
acoolbeancounter 0.2The best on the market imo is Austin air but it’s pricey. I will likely only buy one for my baby’s nursery. We have air doctors in our bedroom and living room, and they seem to work quite well. We had our second model stop working under warranty and they replaced it at no cost, but that is the only bad experience we have had. Our older unit is still going strong a few years in.
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