Levoit
Core 300
$84.99
Coway
Based on 39 Reddit mentions
$499.99
Sentiment summary across the product areas Reddit users mention most.
Original Reddit posts and comments behind this analysis.
Yeah, your boyfriend is totally wrong. KNKA appears to be a junk rebadged brand. These are typically very cheap with poor build quality, short-lived replacement filter availability, and lousy customer service. The 2,325 sq. ft. coverage rating is highly misleading. This is likely at 1 Air Change per
...sissasassafrastic in r/AirPurifiers
January 16, 2026 11:35 PM
17
The only 2 air purifiers that I consistently recommend to my clients are the IQAir and the Austin Air. 2 very different use cases - the IQAir is best overall, all-around, it's also very expensive. The Austin Air has a 15lb carbon block, way more than any other purifier and it's the best unit for fil
...BrianWally in r/AirPurifiers
April 18, 2026 7:38 PM
1
Have you had air testing with gas chromatography-mass spectrometry (GC-MS) analysis performed? That would tell you the VOC species in your air. And have you tried source control and ventilation to bring down VOCs? Sorbent media like activated carbon can be used to remove VOCs. However, it can be ver
...sissasassafrastic in r/AirPurifiers
November 14, 2025 11:38 PM
1
Could you tell us the ceiling height in meters? This is needed for Clean Air Delivery Rates (CADRs). Unfortunately air purifiers won't be great at reducing dog hair, as it's very heavy and large compared to "invisible" pollutants like PM2.5. Hairs shed very close to the air intake will be captured,
...sissasassafrastic in r/AirPurifiers
November 3, 2025 8:55 PM
1
Since you listed measurements in feet, I'll be using the AHAM 2/3 rule for minimum Clean Air Delivery Rates (CADRs). This assumes an 8 ft. high ceiling. See the AutoModerator comment as well. A 12' x 25' room needs minimum CADRs of 200 CFM. A 12' x 12' room needs minimum CADRs of 96 CFM. These CADRs
...sissasassafrastic in r/AirPurifiers
November 7, 2025 3:32 PM
1
Yes. The Coway Airmega 400 sometimes drops in price enough to justify purchasing instead. Last year in the run up to Black Friday, the Airmega 400 was $349. In 2024, I also saw the price around $369 occasionally. Right now, the Airmega 400 is full price. This usually happens before a significant sal
...sissasassafrastic in r/AirPurifiers
November 20, 2025 6:01 PM
1
u/District98 is right - the Levoit Vital 100S-P is not powerful enough. Another note, as listed in our FAQs wiki page and in the subreddit's sticky post on dust: air purifiers aren't very good at reducing visible dust (and by extension pet hair). It's very large and heavy compared to PM2.5 and PM0.1
...sissasassafrastic in r/AirPurifiers
April 24, 2025 9:04 PM
2
I'll use the 90 m3 measurement so I'm not underestimating any subsequent values. The Clean Air Delivery Rate (CADR) should be at minimum 3 times your room's volume when measured in m3. This is for normal pollution levels or user scenarios. In this case, 90 m3 × 3 = 270 m3/h CADR. Note: CADR values a
...sissasassafrastic in r/AirPurifiers
May 8, 2025 3:02 PM
1
Hello OP. Sorry for the late reply; was visiting family a while ago and then got a lousy cold. Have you chosen anything yet? Unfortunately it's quite difficult to capture particulates and high concentrations of gases/vapors/odors effectively in one unit. You need many pounds of sorbent media (e.g.,
...sissasassafrastic in r/AirPurifiers
September 26, 2025 3:49 PM
1
So I logged into Consumer Reports with a subscription. The current testing score differs from the PDF I linked. The PDF scores the Airmega 300 at 63 and categorizes it for use in 350 - 650 sq. ft. rooms. I'll update my previous comment. However, the Coway Airmega 300 does not have a "Poor" rating ov
...sissasassafrastic in r/AirPurifiers
October 16, 2025 1:18 PM
1