Blue Pure Mini Max

This is the one we have in my son’s room: https://www.blueair.com/products/blue-pure-minimax This is the one we use on each floor in a common area https://www.blueair.com/products/blue-pure-211i-max?variant=49656097767710&utm_source=google&utm_medium=cpc&utm_campaign=%5BShopping%5D%5BStandard%5D%5BUS%5D%5BAll+Products%5D%5BBrand+Queries%5D&utm_content=shopping&gad_source=1&gad_campaignid=23289460546

Blueair has a small one that would fit that space for $99 on Amzn or other retailers. I have next size up and so far so good and noticeable decrease in dust. I like being able to control it and monitor its cleaning via the app. Not advocating for the company other than after doing some research I settled on them and so far am happy.

I have a Blueair for small room and can really sense a difference. I like the app as well to track purity and change settings. So many options out there though.

Yes, I have two c545’s from Costco before they switched. I wanted more at the Costco price but ended up with two small BlueAir ones instead. Costco does sell the Winix filters online for various models. I just snagged a set of the filters while they were on sale.

Again another vote for Blueair, I have the max mini for our bedroom and whilst it isn't smart so doesn't show in Home assistant I do have it linked to a window sensor so it only comes on when the bedroom window is closed, but also set to run during the night regardless. Works well and definitely helps with the dust and makes the air feel cleaner.

We have Blue Air - a large one in the main living area, which catches kitchen/cooking particulate, and a mini one in each kid room. Costco has two packs of the minis for $99 right now!

This particular model is designed for a 100 sq ft room. You would probably need to run both purifiers on the highest setting all the time to cover even a small 400 sq ft studio, and that would be kinda noisy. These are not designed to clean an entire apartment, just a single room. You can put them in a single room and close the doors and windows to that room to get the best filtration possible. Just make sure you still have a little ventilation (like a ceiling vent or leaving the door cracked open a bit) if you're planning to do it for a long period of time so that you don't get too much CO2 buildup. If you are cleaning the air with the purpose of removing pollen, close your windows. If you were running them to clean viruses out of the air, then leaving the windows open would improve ventilation, so that would actually help. However, if you are running them to help with allergies or wildfire smoke, then keep the dirty air outside so they can do their job on the air that's inside. According to BlueAir's marketing, their HEPASilent filter is supposedly even better than a HEPA filter. I'm no expert but in my experience they work at least as well as HEPA filters. I like them because they're quiet, cute, and effective. I can see all the junk in the air that got trapped in the filter when it's time to change the filter out. If you want to run just one machine on a quiet setting, then look for one that is rated for the size of your apartment.

I bought this two pack. Love them. Really quiet.

I just bought them too! They’ve been great so far.

I have a BlueAir mini right by him and a larger blue air right outside his room. 

Another vote for BlueAir Blue Pure series, we have them in our bedrooms and living room and they are great - you will be amazed when you change the filters in a few months