The catch
Winix 5510
If you prefer a purely mechanical air path, switch off the PlasmaWave feature by hand.
Side by side
Winix 5510 vs Levoit Core 400S-P: Winix splits out washable intake care, Core has a slimmer body
Quick verdict
Pick the Winix 5510 if you want washable intake care and pellet carbon. The Core 400S-P is the better match for a mechanical-only preference and a narrower cabinet.
Before you buy
Why, and what it costs you
Compare room sizes at an equal turnover rate
Winix 5510 calculates to about 380 square feet and Levoit Core 400S-P to 347, at five air changes per hour and an eight-foot ceiling.
Where this comes from
Area = CADR × 60 / (ceiling feet × air changes per hour). The inputs are 253 and 231 CFM, 8 feet and 5 changes, with smoke CADR at maximum speed. Real conditions are affected by air mixing, furniture, open doors and filter loading.
The catch
Levoit Core 400S-P
The current filter is not classed as HEPA-certified by RTINGS.
Winix 5510
- Why pick it
- A prefilter you can remove and wash is wanted
- Alongside particles, you care about light odor control
- The catch
- If you prefer a purely mechanical air path, switch off the PlasmaWave feature by hand.
Levoit Core 400S-P
- Why pick it
- You'd rather skip ionizer hardware
- It has to fit into an eleven-inch-wide space
- The catch
- The current filter is not classed as HEPA-certified by RTINGS.
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What this page compares
Washable intake care and pellet carbon point to the Winix 5510. The Core 400S-P suits a mechanical-only preference and a narrower cabinet.
Smoke and pollen name different winners
Which one fits
Pick the situations that sound like you
The room is big enough to call for extra airflow
At the same five-change target and eight-foot ceiling, the limits calculate to 380 square feet for Winix 5510 and 347 for Levoit Core 400S-P. If you want to run below maximum speed, allow margin.
- Winix 5510
- Better fit
- Levoit Core 400S-P
- Depends
The cabinet needs to fit next to furniture
Winix 5510 calls for 13.59 inches of width and 8.27 inches of depth, while Levoit Core 400S-P calls for 10.8 by 10.8. Intake clearance is separate, so measure the gap in both directions.
- Winix 5510
- Depends
- Levoit Core 400S-P
- Depends
I want to run it from another room
Winix 5510 and Levoit Core 400S-P both support app control, so it won't separate them. Use the room and placement checks next.
- Winix 5510
- Better fit
- Levoit Core 400S-P
- Better fit
Ceiling height is ten feet
Modeled at a ceiling of ten feet and five air changes, the room areas fall to 304 square feet for Winix 5510 and 277 for Levoit Core 400S-P. That is 20% less floor area than in the eight-foot example, since the purifier has more air to move.
- Winix 5510
- Depends
- Levoit Core 400S-P
- Depends
In practice
Differences you will notice
Compare room sizes at an equal turnover rate
Winix 5510 calculates to about 380 square feet and Levoit Core 400S-P to 347, at five air changes per hour and an eight-foot ceiling.
How we worked this out
Area = CADR × 60 / (ceiling feet × air changes per hour). The inputs are 253 and 231 CFM, 8 feet and 5 changes, with smoke CADR at maximum speed. Real conditions are affected by air mixing, furniture, open doors and filter loading.
Measure the cabinet first, then buy
Winix 5510 has a 112.4-square-inch cabinet envelope, compared with 116.6 for Levoit Core 400S-P. A shallower shape can still call for more wall width.
How we worked this out
Width × depth: 13.59 × 8.27 = 112.4 in² and 10.8 × 10.8 = 116.6 in². The figures describe cabinet bounding rectangles and leave out the required air clearance.
Which unit wins depends on the particle
In the exact US records, Winix is ahead on smoke CADR by 22 CFM and Levoit is ahead on pollen CADR by 12 CFM.
How we worked this out
Smoke: 253 - 231 = 22 CFM. Pollen: 259 - 247 = 12 CFM. Compare like-for-like pollutant ratings and skip the one undifferentiated airflow number.
Plug in your numbers
Can either purifier keep up with your room?
This checks hard limits only. Personal preferences are left out of the math.
Winix 5510
Works with your numbers253 CFM of verified clean-air delivery works out to about 6.3 air changes per hour in this room. Hitting the 5 ACH target takes 200 CFM.
Levoit Core 400S-P
Works with your numbers231 CFM of verified clean-air delivery works out to about 5.8 air changes per hour in this room. Hitting the 5 ACH target takes 200 CFM.
This uses each model’s pollutant-specific CADR at top speed and a target of five air changes per hour. Quieter settings clean less air. Raw airflow and one-change coverage claims are never swapped in.
Option A
Winix, 5510
5510
This sensible follow-up to the popular 5500-2 adds Wi-Fi and keeps the pellet carbon, washable prefiltration and True HEPA.
- Best for
- Medium rooms where good value, app control and a pellet-carbon stage you can replace are the priorities
Facts we checked
- Its Smart Sensor detects odorous gas. Auto picks Low, Medium or High, and Turbo for maximum output has to be selected by hand.
- AHAM CADR is 253 CFM for smoke, 252 for dust and 247 for pollen.
- Filter Q pairs a washable mesh prefilter with pellet carbon and True HEPA.
- In its independent particle-clearance test, HouseFresh measured roughly 249 CFM.
Option B
Levoit, LAP-C401S-WUS
Core 400S-P
Small and responsive, this smart purifier moves enough air for a medium room and has one of the better apps in the category.
- Best for
- Bedrooms, offices and living rooms where you want app connectivity and can do without formal HEPA certification
Facts we checked
- The exact LAP-C401S-WUS is certified at 231 CFM for smoke, 240 for dust and 259 for pollen.
- Published sound runs from 24 to 52 dB.
- VeSync brings remote status, schedules, voice control and automatic fan behavior.
Spec by spec
Where they really differ
| Spec | Winix 5510 | Levoit Core 400S-P | In practice |
|---|---|---|---|
| Smoke CADR | 253 CFM | 231 CFM | Better to rely on a smoke-specific rate than on a one-air-change marketing room size. |
| Pollen CADR | 247 CFM | 259 CFM | The model that leads on smoke does not necessarily lead on pollen as well. |
| Cabinet width and depth | 13.59 × 8.27 in | 10.8 × 10.8 in | Check both dimensions against the real gap, and keep the clearance the manual calls for around the intakes. |
| Remote app control | Included | Included | Remote schedules matter if the purifier sits far from where you spend your day. |
| Automatic sensor response | Odorous-gas sensor Auto | Included | The fan on the Winix 5510 adjusts based on odorous-gas sensing and not a PM2.5 reading. Its rated maximum CADR isn't promised in Auto, and an app schedule does not measure pollution. |
| Ionizer or electrostatic stage | optional | none | If a purely mechanical filter path is what you want, treat this preference as a firm requirement. |
Trade-offs
What each pick costs you
With Winix 5510
- HouseFresh measured high noise at maximum speed, and sleep mode gives up a meaningful amount of airflow in exchange. Auto is driven by an odorous-gas sensor rather than a PM2.5 reading, and it chooses among Low, Medium or High. Turbo has to be picked manually. Darkness can lead to lower Sleep output. Nothing about the sensor shows it protects you from hazardous gases.
With Levoit Core 400S-P
- Its carbon section targets light household smells and isn't intended for high gas loads.
Decision guide
How to decide
The Winix 5510 brings washable intake care and pellet carbon, and the Core 400S-P suits anyone preferring mechanical-only filtration in a narrower cabinet.
Smoke and pollen name different winners
On smoke CADR Winix leads 253 to 231, while on pollen Levoit leads 259 to 247. Because neither unit wins every particle rating, a blanket verdict on airflow isn't helpful.
The slimmer model has more depth
Winix measures 13.59 inches wide and 8.27 deep, and Levoit is 10.8 inches square. Go by the real gap beside your furniture instead of assuming the narrower model saves total floor space.
Filter upkeep is where they differ in practice
Winix gives you a washable mesh prefilter and pellet carbon as separate parts. Levoit has a cylindrical internal prefilter and no ionizer hardware. Choose the cleaning routine you'll keep up.
What this page can’t tell you
- CADR is based on the maximum rated fan speed, and minimum noise and maximum airflow occur at different operating points.
- What these calculations compare is particle-cleaning capacity. Nothing in them promises health outcomes or the removal of a specific gas.
By the numbers
What the data shows
What we found across the air purifiers we compare, plus the checked facts behind each finding.
How many fit
Only 14 of the 70 models checked meet every need here: “Wildfire smoke makes its way inside”, “Floor space is very tight for me”, and “I want it to respond automatically”.
14 models fit, out of 70 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “Wildfire smoke makes its way inside”, “Floor space is very tight for me”, and “I want it to respond automatically”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Winix 5510 |
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| Levoit Core 400S-P |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Winix 5510
A prefilter you can remove and wash is wanted
See price & reviews on AmazonLevoit Core 400S-P
You'd rather skip ionizer hardware
See price & reviews on AmazonEach link opens in a new tab.
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