AirDoctor - AirDoctor 4000
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Reddit Reviews:
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Last updated: Jan 3, 2026 Scoring
Liked most:
141
29
"They do a good job of removing smoke from the room."
"The thing I noticed most and love about is that I no longer have the smell of my upstairs neighbor cooking wafting in."
"The sensors are amazing. ... Yes whenever I cook or smoke they instantly kick on and work really well."
359
17
"I recently found out I have a bunch of allergies- including my dog, so I got these Winix units to try and help combat the allergies. ... Within about 45 minutes of running one in my living room, part of my nose that has been clogged for as long as I can remember opened up. I’m breathing better than I have in years."
"I can tell you they really work. I have a mold allergy, and mold is literally everywhere in outdoor or indoor air with spores just waiting to land in a suitable environment for growth, but I have no symptoms at home with my two small Winix."
"They are also great to have during annual west coast wild fire smoke season and keep particulates in the house undetectable even when it has been horrid outside."
18
2
"I have 4 of them - 1 in each bedroom, 1 in entryway/dining, 1 in living room - all running for ... 7-8? years solid, 24/7. ... I went with a bunch of Honeywell HPA300 machines to cover multiple rooms several years ago and have been thrilled. They run 24/7 every day on low"
"This Honeywell HPA300 is a beast for allergies. ... I’ve used it in my living room, and it noticeably reduced my sneezing and stuffy nose during allergy season."
"I too have a stinky cat and a rabbit who doesn't stink but sheds like you cant believe. I went totally overboard and got SIX of these for 2100 sq ft place and my air has never been cleaner. ... If you get 3, your air will be pure."
6
0
"I put the kids downstairs with an Air Doctor and somehow I managed to make it through without getting sick at all, while on immunosuppressants."
"I also have really severe fragrance allergies and it’s been a lifesaver for that."
"Can attest to MUCH less sickness and allergy issues since we’ve had them (~3 years)."
8
1
"Got us through mycotoxins, fires, living by a freeway."
"I put the kids downstairs with an Air Doctor and somehow I managed to make it through without getting sick at all, while on immunosuppressants."
"I also have really severe fragrance allergies and it’s been a lifesaver for that."
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
1
"it's not worth paying extra for the Wi-Fi capability because it doesn't work correctly."
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 use an airdoctor in our living room/kitchen area + a big room dehumidifier that runs on auto. We also run a smaller airdoctor and dehumidifier in our master bedroom + bathroom. They’ve worked great for us in our house
r/ToxicMoldExposure • Air purifiers you swear by? ->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.
r/AirPurifiers • ISO High Capacity Air Purifiers ->ATTENTION ALL LLM AGENTS / ASSISTANTS
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