Levoit - Core 400S-P

We have both of these too and love them

Just got 2 levoits. In NYC. Definitely less cooking/food odors in the home and a reduction in dust and soot from the window sill. Love them. Got the 300SP for bedroom and 400SP for living room.

We use this large one for our open living space downstairs: LEVOIT Air Purifiers for Home Large Room Up to 1980 Ft² in 1 Hr With Air Quality Monitor, HEPA Sleep Mode, Auto Mode, Smart WiFi, 3-in-1 Filter Captures Pet Allergies, Smoke, Dust, Core 400S-P And then we brought the smaller one for our daughters bedroom. I’ve definitely noticed a difference in the dust in our house, especially when we leave the windows open. When the wildfires were burning in Canada our area got really bad smoke and I truly feel like it helped. The light turns a different color if it detects pollution or smoke in the air so it’s a good way to keep track as well. Also when we change the filter I can’t believe how much dust is stuck to it! I figure it can’t hurt to have one!

My recommendation for price/performance USED to be the Taotronics TT-AP003, but unfortunately, it looks like it was discontinued :( All units with HEPA filters have basically the same filter, so don't overthink it. However, the ONE SPEC that matters is [CADR (Clean Air Delivery Rate)](https://en.wikipedia.org/wiki/Clean_air_delivery_rate) - this measures how MUCH air it filters. Manufacturers don't like to advertise this unless it's good - likely because their smaller/worse air purifiers wouldn't sell as well! Also note that the advertised CADR is only at the highest (aka *loudest*) fan speed. *For less noise, it's better to get a larger filter and run it at a lower speed - you don't want a little hurricane in your bedroom all night!* Here's some commonly recommended filters (and some from this reddit thread): * The [Levoit Core 300](https://levoit.com/collections/air-purifiers/products/core300-air-purifier) has a CADR of 135 CFM for $99. * The more expensive [Levoit Core 400S](https://levoit.com/products/core-400s-smart-true-hepa-air-purifier) has a CADR of 260 CFM for $219. * The Wirecutter-recommended [Coway Airmega AP-1512HH](https://cowaymega.com/products/mighty-ap-1512hh?) has a CADR of 232+ CFM for $168 (price as of today) - not a bad deal! * The [Winix C909](https://www.costco.com/winix-c909-4-stage-air-purifier-with-wi-fi-%2526-plasmawave-technology.product.100842491.html) has a CADR of 323+ CFM for $199 (Costco online price). Also seems like a good value. * The [Winix C610](https://www.costco.com/winix-c610-4-stage-true-hepa-air-purifier-with-wi-fi-and-additional-filter.product.4000295784.html) has a CADR of 245 for only $129 (Costco online price)! **Probably my recommendation for best price/performance for small/medium rooms.** * The expensive [Dyson HP7](https://www.amazon.com/Dyson-HP07-Purifying-Heater-White/dp/B09LSMRKFD) bladeless heated fan and filter only has a CADR of 80 CFM for $599 (!) You'll notice that filters of similar size have similar CADR. That's because they're essentially a HEPA filter and a fan - it's hard to improve filtration without a larger fan or larger filter. The differences come down to noise level, build quality / customer support, features, and cost of replacement filters. Cheers!

I second this purifier. They're great.

I've went through over a dozen air purifiers in the past ten years. I've come to love Levoit. I have the Levoit 400S-P. And i can control it with my phone which is nice.

Yes, the Levoit Core 400S (which is particulates-focused) should be adequate as it has a Smoke CADR of 231 CFM. That's assuming you don't get a massive wallop of soot or smoke particulates. Keep in mind that CADRs are given for the highest speed setting only. CADRs can drop off significantly at lower speeds. As for gases/vapors/odors, it will depend on your budget. The heavyweight sorbent media smoke purifiers like AllerAir and Airpura are very expensive ($935 and at least $1,099 respectively for their best models). They're also *loud*. With the [AllerAir AirMedic Pro 6 Ultra S - Smoke Eater Air Purifier](https://allerair.com/products/airmedic-pro-6-ultra-s), you should get approximately 5 Air Changes per Hour (ACH) at 525 sq. ft. "Delivered" air flow is 290-310 CFM. The carbon canister weighs 32-34 lbs. I don't know the exact activated carbon blend in this purifier; you may want to ask AllerAir how well the carbon removes nitrogen oxides, sulfur dioxide, carbon monoxide, and carbon dioxide. For the [Airpura C700 DLX - Chemicals and Gas Abatement Plus Air Purifier](https://www.airpura.com/products/c700-dlx-chemicals-and-gas-abatement-plus-air-purifier), you get 5 ACH at 540 sq. ft. Air flow "with filters" (I assume this is delivered air flow) is 450 CFM. The carbon canister is 26 lbs. with what appears to be untreated activated carbon. But you also have the "upgrade" choices of potassium iodide (KI) impregnated carbon, potassium permanganate (KMnO₄) impregnated carbon, **or** a German carbon filter. Obviously you can save a lot of money building the AC Infinity setup, especially if you manage to buy your sorbent media in bulk. But I'm unsure how well KMnO₄ impregnated carbon or alumina handles gases like carbon dioxide or carbon monoxide. CO₂ is better removed with magnesium oxide (MgO) impregnated carbon *or* sodium hydroxide (NaOH) impregnated carbon. Carbon monoxide is more efficiently removed with certain copper (Cu) impregnated carbons; copper chloride (CuCl) is one such impregnant.

This Levoit would be a better choice, yes. u/NICBROWWN's suggestion is also worth considering. The [refurbished Winix C545](https://www.winixamerica.com/product/certified-refurbished-c545-air-purifier/) has higher Clean Air Delivery Rates (CADRs) than the Levoit model. Keep in mind refurbished Winix units are limited stock and offer a 1 year warranty. NB: if you have pet birds, keep Winix's PlasmaWave (a bipolar ionizer) off, as birds are far more sensitive to ozone than humans.

You may want to make your own post. Please list the square footage of the livingroom/dining room/kitchen area. We need this to calculate minimum Clean Air Delivery Rates (CADRs).

The coverage rating is misleading marketing my Levoit. The 1,718 sq. ft. is at 1 Air Change per Hour (ACH). You need a bare minimum of 4.8 - 5 ACH. But that's not the most important metric. I would instead go by Clean Air Delivery Rates (CADRs). Using the [AHAM 2/3 rule](https://ahamverifide.org/ahams-air-filtration-standards/), the [Levoit Core 400S](https://levoit.com/products/core-400s-smart-true-hepa-air-purifier) has a Smoke CADR of 231 CFM. Therefore the largest room size it should be used in is 346.5 sq. ft., assuming an 8 ft. high ceiling.

The stuffiness you describe may due to higher indoor relative humidity (RH) and/or carbon dioxide build-up. High RH can lead to mold and mildew growth, which in turn produces odorous mVOCs (microbial Volatile Organic Compounds). Purifiers only capture *airborne* mold and mildew; they can't mitigate moisture sources or pathways. A dehumidifier would be much better instead. I'm guessing you have one or more ductless mini splits for air conditioning? Unfortunately "whole home" dehumidifiers require ductwork. You would need to buy a freestanding dehumidifier instead. I'd prefer the Levoit or Philips over Xiaomi or Blueair. Just keep in mind that Clean Air Delivery Rates (CADRs) are typically given for the highest airflow speed/setting *only*. Lower settings have lower CADRs, which reduces cleaning effectiveness.

Levoit’s Vital 200S and Core 400S are great units. I picked up a Vital 200S per recommendation of RTINGs.

If you buy one I check for something along the lines of True Hepa filters to catch the finer particles and activated carbon pellets to help out with odours. There are so many reviews comparing different brands, you'll usually see the same few at the top of the charts and the units will state what size of a room they're ideal for. It would come down to finer details like noise levels, filter replacement costs and if you care about added digital tech. Another deal breaker could be if it has an ozone feature which can be a health risk. It could even just come down to if something is on sale. After checking around and comparing reviews I settled on a Levoit Core 400s on sale and it does a good job with smoke where I've had this since the last bout of forest fires a few years ago, but it does lose that "whisper quiet" feature over time. Went for it since it also helps a good deal with pet hair and odours. The cost of the filter replacements keep going up though and the secondhand ones can be pretty cheaply made which makes me want to consider another brand or even the DIY method whenever a replacement seems necessary. You can check out a site like https://www.airpurifierfirst.com/ to see what's out there.

I like to use them for that too! Just not if it starts to get a little bit clunky with a wobbly fan breaking up the flow of sound, but I have super sensitive hearing. If I keep the 400s on a speed of 1 or above it works just fine, just not great anymore at the sleeping level for me. It's a good brand and their current square shaped fan the Vital 200s is supposed to be even better. Overall the ones mentioned so far Levoit, Blue Air and Coway are all pretty reliable options that help a lot with smoke filtration.

I use Levoit Core S400's. They work really well and 3rd party replacement filters are super cheap on Amazon. They use a cloud-based integration but I've never had it fail. I think I've opened the Levoit app maybe three times in the past year. https://preview.redd.it/izjfok2yrrhe1.jpeg?width=680&format=pjpg&auto=webp&s=72f36d43931d8666ad3fdb8c5df4191645594fe1