AirDoctor - AirDoctor 3500i
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Reddit Reviews:
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Based on 1 year's data from Feb 24, 2026 How it works
Liked most:
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"Got us through mycotoxins, fires, living by a freeway."
"Can attest to MUCH less sickness and allergy issues since we’ve had them (~3 years)."
"crazy the amount of stuff we find in the first front filter."
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"Got us through mycotoxins, fires, living by a freeway."
"I also have really severe fragrance allergies and it’s been a lifesaver for that."
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"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."
1
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"Our older unit is still going strong a few years in."
"We had our second model stop working under warranty and they replaced it at no cost"
Disliked most:
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"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"
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"AirDoctor is fine but their units are a bit noisy"
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3
"The Air Doctor has both but the filters are STUPID expensive."
"their filters are expensive"
"IMO air doc is not a good product especially for the price. ... For $700 you can get a much better machine"
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"The Air Doctor has both but the filters are STUPID expensive."
"their filters are expensive"
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"The off gassing on mine was terrible."
"It's all cheap plastic construction"
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.
aejanoff 0.2In 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.
a_girl_has_no_nameee 0.2I 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.
ehatnotay 0.2We 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.
JewFuser 0.2airdoctor is by far the best and they are having a sale right now!
jsilva298 0.2We'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.
Jumpy-Woodpecker-248 0.2Air 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!
KnowledgeTop573 0.2Airdoctor has been really good to me
kwanatha 0.2Get an air doctor, they really work well.
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