Best Air Purifiers, according to Reddit

simple and it’s basically plug it in and walk away. Show less

pellets were spent without a doubt, and wanted to combat litter box smells... but the filters were still in fine shape.

Coway filters are like $80, but i found a review / test of third-party filters that didn't have any appreciable difference for $30.

they make a bunch of different sized purifiers for different room sizes, so see what suits your sit. Show less

work well for you. It's running about $95 right now for Black Friday, handles pet dander pretty well, and the filters last way longer than most (comes with washable pre-filters you can just rinse off instead of constantly buying replacements). That matters when you've got kids and a dog making messes. I wrote up my experience with it here if you want the real-world take instead of spec sheets.

The better-known option: Honestly, Levoit Core 400S gets recommended a lot for a reason. It's around $180-200, solid reputation, app control if that matters to you. The Coway Airmega 400 is great too but pushes closer to $400.

For your layout, I'd probably do two smaller units (one in the main living area, one in the bedroom hallway) rather than one massive one, especially since doors stay open. Air purifiers work best when they're in the room you're actually in.

The AEOCKY would let you grab two units for under $200 total, which is less than one "premium" unit. But if you want the peace of mind of a well-known brand, can't go wrong with Levoit either.

Hope that helps cut through the noise! Show less

of a H12 is having a substantial CADR increase than the same speeds on a H13, since those speeds favors quietness.

But I also agree in a way with that statement since I've seen certain H13 purifiers such as Coway Airmega 400 with a pretty good turbo speed dB-wise, given its CADR. That unit is a very high quality HEPA H13 unit. Could use lower dB at sleep mode but thats the nature of H13 showing its hands there. Show less

forget it device (other than cleaning/changing filters periodically). Show less

S model is “smart.” Show less

CFM.

Not sure how big your living room is, as you didn't list its dimensions. Let's just say it's 450 sq. ft. with a 10 ft. ceiling. Adjusted purifier coverage rating is 562.5 sq. ft. Minimum CADRs needed are 375 CFM.

I normally recommend Coway. The bigger units (Coway Airmega 400 and Coway Airmega ProX) are currently not on sale directly from Coway. And I definitely don't recommend buying either model at full price. Both the Airmega 400 and Airmega ProX are cheaper at Sylvane for the moment.

Alternatives

* Bedroom: Levoit EverestAir-P (from the VeSync Store) * Living Room: Levoit EverestAir-P \+ Levoit Vital 200S-P

The EverestAir-P has a top Smoke CADR of 354 CFM. So if your living room is roughly the equivalent of 562.5 sq. ft. or larger, you would need the Vital 200S-P to meet minimum CADRs. Show less

particulates, however. Multiple medium units at different locations throughout the house will have a more significant impact than a single, larger one.

In a 1300 square foot home for your situation, I would recommend the Winix 5500-2 or AM80 (same unit, different exterior). It is a good choice as it's inexpensive and does everything really well, and operating costs are very reasonable. Further, it has a mesh screen prefilter that is easy to access and clean, which prolongs the life of the HEPA filter and makes it very simple to remove the hair that the unit does pick up. These units are designed for up to 360 square feet for their optimal performance. Three of these positioned in different spaces throughout the house would make a huge difference (and much more so than a single, larger unit.)

Alternatively, if you are looking for something less expensive, the Corsi-Rosenthal Box, which is a DIY purifier made from box fans + higher efficiency MERV furnace filters, are excellent at particulate filtration as they can move tons of air. You could easily make three of these for under $200. (However, these do not have the convenience of a reusable prefilter that is easy to access and clean, and they can be on the noisier side of things.) Show less

filterbuy.com Show less

purifying. It has a HEPA filter and a separate air filter as well. Downside is no AQI display. (just an LED indicator)

The Xiaomi on the other hand has a lot of features. App Control - Alexa compatible - PM2.5 AQI/Temp./Humidity Sensor. It also tells you how much longer the filter will last. It comes with its own proprietary "HEPA certified" filter that you can buy only on mi.com; which is kind of a bummer. But does the job. But only 60-70% as good as the Airmega when it comes to air purifying.

TLDR: \- Coway Airmega 150 is the best functionality wise \[Prices are a little hiked up rn\] \- Xiaomi Smart Air Purifier 4 is feature packed, if it matters to you.

FYI, Both help keep the AQI under 10 at all times when the windows and doors are fully closed. For perspective, I live around the vadapalani area right next to the metro construction.

Hope this helps :) Show less

balance of performance and low noise (as low as 22 dB).

On the other hand, for a cheaper option and also quick air purification, you have Xiaomi Smart Air Purifier 4. Good value for money for those living in high-pollution places with features such as app control, smart scheduling, and 360-degree air intake. High CADR 397 m³/hr

Focus needs to be on Coway's models for the long-term, as their 1.5–2 year filter life will save you significant money over five years compared to models with 6-month filter lifecycles. Show less

one advantage with Coway it has a pre-filter which can be removed and washed. The Hepa filter has to be replaced once it reaches 0% , the cost for MI filter used to be 2000 rs, now its 3000. I am worried pollution is going to cause long term health issues to all of us. Something has to be done. Show less

pollution.

Mi and Qubo give filter replacement alarms. They say 9000 hours to 15000 hours. So not sure how you came up with 3 months. 90 days x 24 hours is about 2k hours of filter use only.

I've placed the Phillips 1215 in the kitchen to reduce pollution in the rest of the house.

I didn't think much about Co2 but will see if I can monitor.

I counter room cooling with a oil based heater since it doesn't alter the room humidity unlike convection based heaters. Show less

reset are poor to unacceptable

Personally I use IQAir and Austin. Austin unrated, one IQAIR model poor. I use their multigas which isn't ratedl

consumerreports.org Show less

couple of years ago, not having to do a lot of dusting is a high priority for me...

All of them are way oversized for what I need, since I have large smart ones in each bedroom that claim the ability to support like 1500 square feet. But I like the smart, wifi connected ones. I also like the ones with the auto sensing feature so they can adjust their own speeds as needed. So I went for features rather than sizing correctly for each room.

Thus, when it was time to get another, and I looked around, this seemed to be a good fit without getting models that cost way too much. I have an Air+Health, and an Aeris, both which are like 3 or 4 times as expensive. And neither of which has ever justified that cost in my experience. Especially now that Aeris was bought out by iRobot and the app won't even work anymore... One more reason to go this route.

I got this one a day before I also grabbed a Core 200S for my bathroom - the only one I have that is not capable of auto sensing.

This one is dead silent on auto. On speed 1 of 4, it's a very quiet fan noise, even from 5 feet away, which is how far it is from my dining table chair. 2 is not much worse, and even 3 is more than acceptable. 3 sounds like many other ones I've seen would be at a lower setting. 4, of course, is loud, but again, it's loud compared to itself. Compared to, say, my Aeris, Winix, or my Air+Health purifiers, this one has the least obnoxious sound level on the highest setting.

I like the ability to schedule things. I let it run at a higher level at night while I sleep since the noise will not bother me at the total opposite end of the house. And even if I did her it, at that point it would be white noise, which I often sleep to anyway due to obnoxious neighbors.

The auto setting seems to be spot on with the other ones I have that cost three or four times as much as this. I really never notice it going up - until I cook burgers on the stove. Doesn't matter what else I do with ground beef, tacos or anything else, nothing cares. I cook hamburgers? Suddenly the purifiers in my kitchen, dining room, and great room (big open concept here so these three rooms are one large room that's half of my house) all spin up, show red and are doing their best to cope with whatever it is that my hamburger cooking is doing to my poor indoor air quality. And this one does not lag behind or anything. So you're not getting a lesser quality detection on this one simply because you are not spending such a ridiculous amount.

My only real complaint is that the display is so recessed on the top. So if you're sitting across the room you have absolutely NO visible sign of status. And if it's on auto you can't even tell if it's turned on or not since it's so quiet if it isn't sensing something in the air and cranking up the air filtering.

But the app works, unlike the Aeris ones now, and the unit is unobtrusive unless you REALLY make an effort.

For the price, you can't beat it. And for the price, it beats ones that cost several times its cost. Show less

reset are poor to unacceptable

Personally I use IQAir and Austin. Austin unrated, one IQAIR model poor. I use their multigas which isn't ratedl

consumerreports.org Show less

it if you’re okay with the upfront cost! Show less

just not at the level Alen is. Avoid Dyson, blueair and Levoit. They’re junk.

3) As for sizing, this part is important: most manufacturers advertise crazy sqft numbers (1,000sqft+ for a tiny tabletop unit) just know that most of the time this is disclaimed by stating it can filter all the air in a 1ksqft room ONE TIME per hour. If you actually want to filter your air, industry standard is FOUR times per hour.

So in reality, that 1ksqft unit is really only good for a 250sqft room on full blast which is usually loud.

What kind of space are you trying to purify? An Alen 45i or 75i is great for living rooms and open spaces, then A flex or 25i bedrooms would work well. Show less

mine for five years now and I’ve never had an issue.

That being said, an engineer friend that works in air quality recommended the Coway purifier and used that in their home. I think both are great options. Show less

and I use the genuine filter.

Amazon Show less

with the dog—I promise these things pay for themselves by helping you keep up on pet hair by doing a room or two every day. I would NOT let it run with the dog in the house alone, my old Roomba bears Malinois battle scars but my shark ones are quieter and didn’t bother my girl as much.

One of those and either:

Refurbished shark liftaway for $90 OR a Refurbished Shark stick vac for $~~115~~150

That’s about $50-100 leftover for a decent HEPA filter/purifier.

Edit: the stick vac is now $150–it must’ve been on a brief sale earlier Show less

and I can testify it definitely is! Life saver Show less

things that could reduce the smell, like carbon filters and an air freshener thing you can clip onto it somewhere. I'm not sure where the air freshener goes, but remember seeing it when I was buying one, I do have the carbon filters, though. They just slide into a slot in the litter collection tub that pulls out at the bottom.

Maybe you could try recommending those to your friend since the thing appears to be in the living room. Show less