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Reddit Reviews
I recently purchased 3 different levoit air purifiers from Amazon for my mom's place and they were all horrible. Ive been testing them out for about a month. My allergies became worse. They were also advertising as a true hepa when they are not and they are being sued for that. I went and ordered the classic Alen air purifier I have at my place for her, and it's so much better. I also ordered the refurbished flex that they had on sale for $99 for her bedroom. What a difference! Im returning all of the levoit air purifiers. Personally, Alen is a winner in my books
I have six cats. I also keep their litter boxes in a walk-in closet in a spare room. I also recently bought a heavy duty air purifier from Alen Air. This is in the room part of the spare room. I switched to stainless steel litter boxes. I also had to get super high sided litter boxes. One of my most recently acquired cats pees up. She literally sticks her rear end high up in the air and shoots pee out. It was on all of the walls of the walk-in closet. I used a black light and deep cleaned the closet with an enzyme cleaner. I have two Litter Robots and six regular litter boxes—four in the spare room, one in the master, and one upstairs. It is very important to me that guests not be able to smell that I have cats when they enter the house.
Not a Dyson. Seriously. Alen, Coway or winix.
Dyson in general is not known for high quality especially for the price they charge. Also their customer service is shit. The other 3 I listed are much better options. You’ll want as much carbon in the filter as possible. Alen VOC for example.
Longtime allergy sufferer. Alen air purifiers are the gold standard. Choose the BreatheSmart model that is one level ABOVE whatever your room's square footage is, and chose any filter designed for allergens or wildfire smoke. Keep the fan on the thermostat running (with or without A/C) and buy the best filter for your HVAC.
I bought the Alen BreatheSmart 9 years ago for $500 - a big investment. At the time I was desperate for allergy relief and it delivered. It's still going, no regerts.
Not smart but I have two Alens and absolutely love them. I've had an older Breathsmart for 6-7 years and still works great. Recently bought a smaller one for my gym/mancave and it's also great. Won't look for another brand if I needed another one.
I have 6 Alens. 2 x BreatheSmart 75i, 2 x BreatheSmart, a T500, and a Paralda. I like them. They are quiet, the sensors (on the 4 bigger ones) seem to be accurate and ramp up cfm when air quality calls for it. I live in the lightning capital of the world... God's Lightning Rod, FL. I had 2 older ones that got hit and the LEDs went out. It still worked fine, it was just the little LED bulbs that didnt work. They sent me 2 new units with no hassle. The filters are not cheap, but I am happy with how long they last and how they perform. I'd 1000% buy from them again.
I have an Alen BreatheSmart in each big room and an Alen T500 in the smaller rooms. They are basically silent and work amazingly. Plus you can get set up for filter deliveries every 6 months or so.
Rankings by Use Case
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Best for Large open rooms

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Best for Quiet bedroom use

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