
Coway
Airmega AP-1512HH Mighty
Durable, effective for allergens/odors, but loud on high.

Running these analyses costs money. Buy through my links to help keep lights on! I may get a small commission.
Please don’t take advice from here, find out for yourself: Buy an air quality monitor like the one pictured, https://preview.redd.it/gpgkactfh3sg1.jpeg?width=1320&format=pjpg&auto=webp&s=4cdc97dbace6cdeaaca5d25c067fae91e5558927 with VOC, CO2, etc. and depending on which spike for your room, buy a hepa air filter with the matching strength, eg my small farm of X1Cs emit a lot of PM2.5 and TVOC so I got a Levoit that handles double the sq ft of the room and though it has its own detection, I just run it whenever I print. It’s quiet and avoids the issue. But there IS AN ISSUE. It’s different for every space, room, ac system, printer, filament, project etc. You have to sample YOUR air.
levoit is good and has some very affordable options. we have an appropriately sized levoit in almost every room in our house and it helps a lot with allergies. also make sure to change your furnace filter regularly and use merv 13 or higher filters for it
I’ve been running Levoit air purifiers for years non stop now. I’ve never had any problems.
Seconding Blueair! We have a Levoit and a Blueair; while I have nothing bad to say about the Levoit, I personally prefer the Blueair (granted, it was about twice as expensive). We've got two medium-sized dogs, and - aside from the clumps of dog hair under the baseboards - you wouldn't know that we had any pets!
I love my Levoit. Stepped up the filter and it works wonderfully.
Adding to the other person’s recommendation, picked two of these up almost a year ago now and ALL smells have been handled by just one unit no problem. We’ve used it to: \- Clean drywall dust out of the air (don’t recommend this but it works well) \- Clear smell of cat litter \- Prevent smell of countertop sealant / adhesive \- Farts (literally do not smell them) I really can’t say enough good things about these purifiers. I had Levoit units for years before but these have been so much better for us. The auto feature seems to work really well at even detecting farts in a chair across the room funnily enough. The plasma thing is a bit of a gimmick though because it happens after the filter so it doesn’t really do much

Coway
Airmega AP-1512HH Mighty
Durable, effective for allergens/odors, but loud on high.

Levoit
Vital 200S-P
Smart, effective dust/odor; some find replacement filters pricey.

Winix
5500-2
Budget king, durable; poor VOC removal, Plasmawave disliked.

Coway
Airmega Mighty
Durable, great for allergies/dust, responsive auto-fan.

Winix
5510 & 5520
Good value, durable, effective for pets; carbon filter issues.

Ranked #1
IKEA - UPPÅTVIND

Ranked #1
CleanAirKits - Corsi-Rosenthal Box

Ranked #1
Austin Air - Healthmate Plus

Ranked #1
Winix - 5500-2

Ranked #1
Coway - Airmega 400

Ranked #1
Coway - Airmega AP-1512HH Mighty