AirDoctor - AirDoctor 3500i
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Reddit Reviews:
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Last updated: Jan 3, 2026 Scoring
Liked most:
344
68
"never deflates"
"Also pitched it on bare rock using rocks to hold the stakes on a decently breezy night and it was pretty bombproof."
"the nearly 8 yr old tent is still going strong (handed down to my sister)"
22
0
"it’s majorly helped w allergies and dog smell"
"it's fantastic in keeping the farm smell to a minimum."
"Both make a dramatic and perceptible difference in air quality. ... I can now paint my nails in the house and not choke out anyone who enters the room, or risk giving the cat (or myself) brain damage."
96
29
"The cats are finally not terrified of it ... I can set it to quiet mode where it is barely audible ... Even quiet mode picks everything up just fine."
"Noise on the 3i is next to zero."
"another plus for Alen is that they are insanely quiet. I have a 45i and 75i and they are excellent."
6
2
"He did air sample tests and they came back clean, despite there being a massive amount of mold inside the walls and a super high ERMI test (which is spores in dust samples). We realized later that they did the air samples right next to where our air doctors were and air doctors filter mold spores. As soon as we removed them, the levels were higher."
"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."
15
0
"Honeywell Hepa Air Purifier is amazing all the time especially post fire. It's saved me."
"I just got a Honeywell HPA304 and it's worked wonders for my room. It's so much less stuffy than it used to be with my two keets."
"Got us through mycotoxins, fires, living by a freeway."
Disliked most:
37
71
"I lost 300$ on a50 gen 5,has worked maybe 10 hours totally ... and dock station froze and stayed in xbox mode after a regular software update... ... tried everything i could,believe me..."
"if you also regularly use Bluetooth on the go, then Astro isn for you as the Bluetooth is on the dock and not on the headset ... Astro is definitely not worth the price when the Bluetooth is on the dock. That was a stupid thing to do, because anyone who buys a headset with Bluetooth would want to use the headset away from their set up and Bluetooth on the go"
"The prices for wireless speakers/subwoofer that sync with a soundbar are outragious. ... 2000€ or more for a sonos arc ultra + sub + 2 rear speakers."
7
2
"The off gassing on mine was terrible."
"tried the Conway and there was so much plastic offgassing. I returned it.."
"It's all cheap plastic construction"
30
42
"The air purifier is now unusable since I can’t replace the filter."
"the filters are expensive as shit"
"the filters are expensive as shit"
19
40
"The fan that circulates the air is so ridiculous it sounds like an airplane is idling inside my house, and it literally changes the air pressure in my kitchen and hurts my ears"
"The biggest issue is the noise it makes, I move a lot from side to back and vice versa during the night. The noise sounds like balloons rubbing against each other. I've tried wrapping it in a blanket, which helps a bit but still makes a lot of noice."
"Loud as hell. ... Ditto works really well, but loud as hell."
0
2
"it's not worth paying extra for the Wi-Fi capability because it doesn't work correctly."
"3500 does not have WiFi or app ability- you have to get the i version to get that. Not crazy about that at the price point"
The 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.
r/moderatelygranolamoms • What is the best HEPA home air purifier that's actually worked well in your opinion? ->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. Make sure you’re using enough litter that they can bury their poos and fully changing out the litter every 30 days to help with odor control.
r/AirPurifiers • Does your air purifier really remove odors? ->I have 2 air doctors and a levoit and don't notice any difference between them. If money was no option I'd probably gonwoth Austin Air or Jaspr. If budget then Levoit or Winix from Costco. Or Costco also has a Shark with a 5 year filter.
r/moderatelygranolamoms • What's the best quality air purifier for home you've ever used? Have you found a noticeable difference? ->We have had the Air Doctor for about 2 years now and love it. Got us through mycotoxins, fires, living by a freeway. It has a sensor that also increases filtration when needed. We change the carbon filter 2x/year and the HEPA filter 1x/year.
r/moderatelygranolamoms • Best air purifier ?? ->We've had an Air Doctor on our main floor for many years and its legit. crazy the amount of stuff we find in the first front filter.
r/Home • What's the best air purifier for home you've used? Worth it or Scam? ->Air Doctor! We have 3. Two at home and one at work. Love them. Zero complaints. Can attest to MUCH less sickness and allergy issues since we’ve had them (~3 years). Filters only need replacing every 6-12 months depending on how much stuff they’re collecting from your air. It’s honestly super gross to see the used filters BUT makes me feel good to know all of that stuff is not in our air/breathing it in! It’s even strong enough to filter out COVID and flu virus particles which was a big plus. Most of their products are under $500 and they do regular promos throughout the year too where you can get discounts off as well. Hope this helps!
r/moderatelygranolamoms • What is the best HEPA home air purifier that's actually worked well in your opinion? ->Airdoctor has been really good to me
r/AirPurifiers • Need help choosing the best for allergies! (Prime Day Sale) ->Get an air doctor, they really work well.
r/CatAdvice • Anything to absorb cat litter smell in small area? ->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.
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