AIR PURIFIERS · BUYING DECISIONS
Levoit Core 400S-P vs Winix 5510: close prices, different evidence
These captured prices are close enough that room fit and ongoing ownership deserve more attention than a small checkout difference.
The short answer
Winix lists 392 ft² at 4.8 ACH against Levoit’s 358 ft². Winix explicitly identifies 253 cfm smoke CADR; Levoit’s 231 cfm figure does not name the pollutant on the cited page. We do not treat those as matched smoke measurements.
| Specification | Levoit Core 400S-P | Winix 5510 |
|---|---|---|
| Listed room area at ≈4.8 ACH | 358 ft² | 392 ft² |
| Smoke CADR | Not established | 253 cfm |
| CADR, pollutant unspecified | 231 cfm | See smoke CADR |
| Listed minimum noise | 22 dB | Not captured |
| US price snapshot | $189.99 | $199.99 |
Manufacturer specifications and The Home Briefing analysis, not hands-on testing. Prices can change. Product links are direct and untracked.
Price is a snapshot, not the verdict
We captured $189.99 for Core 400S-P and $199.99 for Winix 5510 on 20 September 2026. The $10 difference is an observation, not a lasting price advantage. Check the current US offer, shipping, seller and exact model before ordering.
Both entries have a $49.99 replacement-filter snapshot, but Winix’s Filter Q listing is promotional. A matching purchase price does not establish matching annual cost: replacement schedules, included layers and operating conditions still matter.
Why the CADR labels stay separate
A CADR value belongs to a measurement basis. The Winix page separates dust, pollen and smoke. Levoit’s technical table presents one unlabeled CADR value. Until that basis is independently established, subtracting the two numbers to claim a smoke-performance improvement would overstate the evidence.
The matched 4.8-ACH coverage claims offer another published comparison, but your ceiling height, layout and preferred speed still affect the purchase decision. Use the room calculator for a transparent smoke-CADR screen; it deliberately excludes unspecified-basis records.
There is no noise winner here
Levoit’s technical table lists 22–52 dB while image copy refers to 24 dB. We record the technical-table minimum with a caveat. No minimum noise value was captured from the cited Winix page. Neither that gap nor the Levoit minimum establishes which unit is quieter at the same clean-air delivery.
If bedroom sound is decisive, seek a matched-speed or matched-airflow test and a suitable return policy. The Home Briefing has not carried out that test.
Which one goes on your shortlist?
Start with room requirements, then check dimensions, filter access, app requirements and running settings. Winix’s explicit smoke-CADR evidence is useful for a smoke-only threshold comparison. Levoit remains a candidate to investigate, not a product we declare unsuitable because one data field is unresolved.
Sources and scope
US product pages checked 20 September 2026. Calculations are labeled examples, not tests. Missing or inconsistent fields are not replaced with an assumed result.