Levoit - Core 200S

\+1 for Levoit. Haven't had a single problem and we have 3 of them.

We have the Core 200S-P [https://www.amazon.com/dp/B08FJ678YK](https://www.amazon.com/dp/B08FJ678YK)

I have a ~700 square foot 1 bedroom for me, my spouse, and our kid… just adopted two kittens and have 3 litter boxes (reluctantly) — one in bedroom, one in hallway, and one in living room. All stainless steel. If you don’t already have steel boxes then make the switch now! We also use the new Okocat Multi-cat Litter with plant-based odor block (dark green bag available on Chewy!). We have a Windmill purifier, Levoit 200S Core, and another Windmill purifier respectively in those areas. I’m allergic to dust mites and dander but also wanted to eliminate the pet smells in general. I swear on my family the smell has gone away running the units 24/7 and toggling between high/low/sleep/eco modes. Our kittens LOVE taking a dump in the bedroom litter box right as we decide to go to bed 😤🤣 and last night I reached over to put the Windmill unit on Boost mode. The scent discipated within a minute!

Yes it is possible to develop a cat allergy later in life. There may also be a dose issue where he was fine visiting for a few hours but not living there. I dealt with this personally and this was the advice from my allergist. Make his bedroom a cat-free zone. Clean it thoroughly and keep the doors closed. Get an air-purifier for the bedroom. I use the Levoit core 200. Keep his sheets and towels away from the cats - preferably in his room. His laundry should be promptly brought back into his room once dried - no leaving a basket out on the couch. He can take allergy medicine. There are pills (I take generic Zyrtec) and nose sprays (I take generic Flonase) and eyedrops (I take generic Pataday). You can help to lower the cat dander burden in the rest of the apartment. Keep it clean, vacuumed and dusted. It is best if the allergic person does not do this chore. Consider draping a cat blanket over the couch and upholstered chairs and washing this blanket frequently. I use a large piece of fleece and it works great. It is like a magnet for cat hair and then I just wash it once a week. Your allergic roommate can just fold the blanket up and put it to one side when he sits on the couch. Grooming the cats frequently will also lessen the amount that they shed.

Second these. I have a couple 300 and some 200 in my kids rooms. I love them

We love this one: LEVOIT Air Purifiers for Home,... https://www.amazon.com/dp/B08FJ678YK?ref=ppx_pop_mob_ap_share

I flashed esphome on my levoit core 200s and couldn’t be happier. I used this https://github.com/acvigue/esphome-levoit-air-purifier

We have and like this one. It works. When I have the bright idea to cook salmon on a piping hot cast iron I get a text from it in my kids room upstairs asking wtf I’m doing. Filters last a while and are pretty affordable

Levoit is loud for sure - the 200 is also not gonna be big enough; they say it filters 1800sqft/hr, and ideally your filter will process the air 4x/hr (so the 200s would be good for ~450sqft) I personally (in a 330sqft studio) have a levoit core 200 in the bathroom (where the litter box is) and a core 300 in the main room. The 200 is loud enough (on the lowest setting) that it sounds like the heater or bathroom fan is running. I’d recommend focusing on the rooms with the litter boxes, before worrying about the bigger spaces

This creates trace amounts of ozone. Fine for humans but not for tiny lungs and sensitive respiratory systems. Seconding the above, I use the Core 200S with a HEPA filter.

Corsi Rosenthal box. You might be able to build a huge one with PC fans to cover 2,000 square feet but realistically you're looking at two or three of them. It's common for air purifier manufacturers to mislead when it comes to coverage area. My Levoit Core 200s is advertised on Amazon as providing coverage for a 1,000 square foot room. In reality, it *could change the air in a 1,000 square foot space but only once in an hour on it's highest speed. You want more air changes per hour. Going by 5 air changes an hour on it's highest fan speed, the Core 200s covers 200 square feet. So even though Costco might be saying the Homedics covers 1,000+ square feet, it's likely based on one air change an hour. Here are some recs for air purifiers that can filter the air in large spaces: https://housefresh.com/air-purifiers-for-large-spaces/ Again, the square footage is based on the highest fan setting. If you're trying to clean the air in 2,000 square feet, you'll probably need 3 or 4 Smart Air Blast Minis or multiples of whatever purifier appeals to you.

I have a Levoit Core 200s. Unfortunately it's underpowered for my space. At the time of purchase I wasn't aware of how to calculate Clean Air Delivery Rate (CADR). I still use it but it's more of a supplement. I've had zero issues with it in the 3.5 years I've owned it. I keep it on 24/7. Here is a CADR calculator: https://housefresh.com/cadr-calculator/ It basically tells you what CADR you need based on your room size. The website listing for the device should tell you the CADR

It's a good device. Like I said, I've had it for 3.5 years and I've had no issues. I don't mind white noise so I think the noise level is fine based on the setting I leave it on. My general advice is a purifier for each room unless you have an open concept space/ studio.

The 200s is rated for 140 square feet based on the CADR of the highest fan setting. Not negating your experience of them being helpful in your space but didn't want the OP to think they're a good option for 700 square feet. Doesn't do much for smells. I've had one for years.

For a 300 sq foot room I recommend the Levoit Vital 200s. It's rated for close to 400 sq feet. I'd run it at the next to highest fan speed. I have the Core 200s and it's suited for a room under 200 sq feet. I generally replace my filters around the 30% mark, sometimes 20%.

Yep, I go by the percentage. I think they calculate filter life based on hours the device is running. For the majority of the day I have my Core 200s on the 2nd (of 3) fan speeds. At 1 in the morning it drops to low, just because. At 10am it kicks back to the 2nd fan speed. I have another purifier as my primary purifier so the Core is just supplemental. At some point I'll move it to my hallway closet for my cat's litter boxes. The vet seems to think the litter I use is contributing to a respiratory issue in one of my cats.

The Levoit Core 200s would work for the offices. Premier bedroom: Winix 5500-2 or Levoit Vital 200s. Living Room: Levoit Core 600s

The A231 is loud. I appreciate white noise but the A231 can be a bit much. I can't speak to the Core 300 but I don't find my Core 200 to be loud. I believe the Core 300 has a small amount of pelleted carbon which will somewhat help with smells.