If you want things to truly be good, most air purifiers WAY over state the area the can cover. The general rule is 2/3’s of the square feet of the area you’re trying to purify (assuming there’s not walls and stuff in the way) of CFM. So for a 600 square foot studio you’d need 400 CFM.
Here is the cubic feet per minute (CFM) rating for the C909 on the various speeds (Med & High are not particularly loud, but Turbo is):
Sleep - 67
Low - 98.8
Med - 165.9
High - 197.7
Turbo - 342.5
Even turbo is a little short for this so 2 smaller purifiers would work if you don’t mind max speed which is loud. I’d personally either 2 of these or a larger unit. For my main living area I use a Medify MA-125 which is on a good sale right now for how much air it can move. It pushes 547 CFM on max speed (which is loud imo, too loud to watch TV) but I keep mine on a 7/9 speed which is 400 CFM and perfect for your apartment. Not loud at all can watch TV with it right next to me no issue
Only down side of the medify imo is it doesn’t have a separate pre filter it’s build into the filters, so you need to change them more often. I change mine every 6 months with 2 cats, which is about 250 a year in filters. My coways filters are cheaper and last longer but for that CFM you’d need the pro X which is expensive
Unless you want it to be loud, oversized is the best option. I personally have a medify MA-125 in the middle between my kitchen and living room, and have a coway 1512 in each of my two bed rooms for my about 1000 square foot apartment. I am VERY happy with my set up. The coway doesn’t have much for carbon but has specialized allergen filters so my partner wakes up without sounding like the are sick every morning, and even I can breath better (I have a cat, lots of dust, dander, hair, and pollen floating around.) I had the medify in my room at first to try it out, but feel better with the coway in there. The medify does have significantly more carbon than the coway so it helps with smoke and smells a lot more, hence why it’s in my living room/kitchen area
I’d personally place the coway 1512 closer towards the window in your bedroom, and the medify right behind that white chair in the center if possible
Correct, oversized ran on lower settings will be better for both noise and power efficiency. The 400 has not had a sale that good in a long time haha, just happened to work out. Otherwise the 1512 is great if you don’t mind it being a bit noisy. I like the white noise personally
I have a medify MA-125 and can run that on 2 for the same airflow as my 1512. The 1512 is around 60-65 decibels on high while my medify on 2/9 is about 35-40 decibels and draws less power with about the same CADR
It’s best to leave on 24/7, but *if* you find it to loud yeah just turn it down when you’re right next to it. I do that with my medify MA-125 that’s right next to my couch and TV. 9 can be to loud for me to watch tv (62 decibels) so I turn it down to like 6 or 7. 6 is 54 decibels which is still louder than the coway 400. Speed 5 is about the same as the 400 on turbo sound wise and that’s very easy to hear and speak over. I honestly forget it’s on most of the time
Nothing at that cost will cover 800 square feet. For allergies you really need around 4-6 air changes an hour to be most effective. You’d need like 500-600 CFM. That’s on the level of the coway airmega proX for one singular air purifier. Just the bedroom though is much more reasonable. I have 2 coway air mega 1512’s with the allergen filters for my partner who has a cat allergy (I have a cat) in the two bedrooms of my apartment and it made a huge difference. I got them recently on sale for 169$ each (allergen filter was an additional like 40-50$) The went from waking up in the morning coughing up a lung, to sleeping through the night peacefully
I also have a few medify air purifiers. They do much better with smells so that’s in my main area, I got the 1512’s specifically because of their special allergen filters. The 350 also has that but is significantly more expensive. Really seems to do wonders for cat dander
I've been using Medify Air for 5+ years and they've held up well.
They work well, especially during wildfire season. I also run them when guests are present to reduce the spread of airborne germs for an immune compromised household member.
Top Air Purifiers on Reddit
1
Coway
Airmega AP-1512HH Mighty
87% positive of 126 users
Durable, effective for allergens/odors, but loud on high.
Psychological_Lab203
