Levoit - Core 600

I have asthma and allergies really bad from having 2 cats. I have 2 levoit 600 and 1 levoit 300. They will definitely help your asthma and allergies. Also talk to your doctor about a daily inhaler or an injection called dupixent. The dupixent is a complete game changer it completely alleviates allergies and asthma. For the cats I suggest getting them on liveclear from purina. My cats were sending me to the hospital every two weeks. I stopped taking the dupixent for a while and I'm super regretting it! I should be back on it in a week! I haven't been able to breathe in my house which has made sleeping a nightmare. So your not alone if this what your experiencing.

I have a levoit and it significantly helped my asthma. I went from going to the hospital 2x a month for asthma attacks to I actually haven't been since before I got my levoit 600s

I am currently running the house special of "I bought whatever was on sale at the time." So I have a mix of Levoit, Winix, Blueair, and a couple of decades old Honeywells to round it out. My AC system also has a "circulate" option and has a built-in HEPA filter and UV light. I monitor it all with a Airthings 2960 (one upstairs, one downstairs). Currently, I am trying to consolidate to a single brand (settled on Levoit - 300 and 600 sizes) just to make filter replacement simpler. Trying to get to a 6mo filter replacement schedule (currently closer to 4mo here in Texas, thanks to all the allergens). From my testing, here's the short version - as long as it moves air and has some sort of filtration, it'll probably help the air quality in your home. Everything else - air quality monitoring, app access, noise level - it's all bonus features that don't really affect the overall performance of the device. According to my Airthings AQ monitor, they do make a difference. I see VoCs and PM1 and PM2.5 go down when you ramp up the filter fan speeds. For recommendations - Level 1 - regularly change the air filter that your home uses - go cheap and replace more frequently rather than going expensive and hoping it lasts longer. Also, vacuum and dust regularly. Level 2 - bang-for-the-buck is the Corsi–Rosenthal box - and it will always be what I recommend to people who are trying to figure out if air filters will make a difference for them. Level 3 - buy the system that moves the most amount of air and has replacement filters that don't cost an arm and a leg. Levoit, Winix, Blueair, are all honestly decent systems - and if you open them up to replace their filters, you find out that they're really just doing the same thing the Corsi-Rosenthal is. They're just intake fans sitting on top of a filter. As price goes up, you're really just paying for things like automation (fan automatically ramping up when it senses high particles), noise reduction, filter change nagging, etc. My suggestion is to buy whatever goes on sale next time and stick with the brand/size for ease of maintenance. Minimum size I'd recommend is 1000sqft even if your home/room is smaller than that. The max room size is calculated by their highest fan speed - chances are, you probably won't be running it that high all the time. It is better to get multiple smaller units that are local to the area you're using versus a single large unit for a big space. These do not move air vigorously (less than your standard fan) - so even if they say they'll do "3000sqft" - they are assuming you're in a single rectangular room with only four walls. If your home is 2000sqft with lots of rooms and hallways, a single unit will not work. However, the number one thing about any air filter is that they are a continuous cost and will only work as long as you are regularly replacing their filter media. At least with air filters you will be able to see exactly what they're doing when you replace them - mine are usually pretty grey-looking by the time I take them out. Oh, I wouldn't bother with all of the fancy filters (like pet, charcoal, or whatever) unless you have a very specific need for them. Those are are mostly gimmicky. Air quality monitors (like the Airthings) are also not needed - and in fact, many of the higher end filters have particulate sensors in them. It's mostly informational for people like me who just really wanted to know if all of these filters actually did anything. Plus, AQ monitors don't tell you *what* the stuff in the air is, they just tell you it's high. I found out that vaporizing humidifiers make PM sensors show deep red spikes because they're literally throwing tiny bits of water into the air (but it's not specifically a negative thing - especially when you're trying to raise humidity). For the "do they work?" question, my answer is "Eh... sorta." They definitely help with things like odors (such as from cooking or pets). I have not noticed a huge decrease in dust build up (but my house is not sealed in any shape). I definitely notice that my allergies get worse when I go outside versus hiding in my house, but it's not like they're completely eliminated when I'm home. So for me at least, they help, but they're not some sort of miracle cure that'll magically fix everything.

The "Core" series (round ones) are definitively NOT HEPA. They still clean air, but if the certification is important to you, they definitely failed to get certified and misled their customers. Their "Vital" series (rectangular) is still HEPA, but they've backed off from marketing it that way due to their legal woes.

So… I don’t know who told you that you only had to replace the filters once a year but 90 days is optimistic for a Levoit Core. And washable filters are a terrible idea, nobody makes a good washable filter. Just replace the Levoit filter whenever it gets clogged up.

I’d yank the Levoit units off this list unless cost is your biggest driver. While the Everest air is a good unit, the core is just not. It will clean air at first but it is cheap and the filter cost will add up over time. The lack of real pre-filters really kills these things. From your list, Medify is excellent. As is Coway 400. IQ Air will filter better than any of these units… but moves a lot less air doing so. I own one and I love it but I fully admit it lacks airflow and is VERY expensive. Alen is also good, you can optionally equip them with extra carbon which is nice. You won’t regret any of these purchases tbh.

We have a Levoit and love it, it has made such a noticeable difference. 3 settings, first one is quiet, the loudest one we use as a white noise machine at night.

We don’t have allergies but we do have a dog who has issues with shedding/dander and it has definitely improved the air quality

I have a Levoit Core series unit in each room. I can tell the difference when I run it- even visually, when the sun shines in the room I no longer see all the stuff in the air. They are reasonably priced, filters are easy to change, and have a nuce design.

How is a levoit only better for hair and dander? Hepa is hepa and vital series should be just as effective as the others. Core series is inferior. 

Yeah, as others are pointing out the pandemic is far from over. Air purifiers are a great idea. We have them in every room of the house. Get them to cover double the sq ft than the room you’ll use it in so that you can get the same coverage on lower settings. The Levoit Core series is good, has a small footprint and is pretty affordable. I’ve sent these to family. Shout out for the [Air Fanta 3Pro](https://air-fanta.com/collections/all) because it folds down and is portable for travel. [Clean Air Kits](https://www.cleanairkits.com/collections/shop-all) are also awesome. I just got the [Exhalaron](https://www.cleanairkits.com/products/exhalaron) to use for doctors appointments etc.

I chose the Levoit Core Series because its quiet operation worked well in my baby's room, and the cleaner air noticeably reduced my allergy symptoms.