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Air Purifiers · Head to head

Levoit Core 400S-P vs Winix 5510

Full Smart Air Purifiers comparison in 2026

Updated October 2026
Data from Amazon and official Levoit and Winix sites.
2026 verdict
For a large living room, the Winix 5510 is the smarter buy of these two air purifiers: it costs less than the Levoit Core 400S-P and adds a deeper filter stack.
Winix 5510
Winner
Winix 5510
$128.24$179.9929% OFF
Buy on Amazon USACheck price
A washable pre-filter and a switchable PlasmaWave ionizer sit ahead of its True HEPA filter, layers the Core 400S-P's sealed cartridge does without. The Levoit Core 400S-P answers with the higher owner rating and stays Energy Star certified and ozone-free, since it carries no ionizer stage at all. Coverage is close, 358 sq ft against 392 sq ft, and both work with Alexa, Google Home and Home Assistant, with the Winix's ionizer switchable off entirely for anyone wary of it. Choose the Winix 5510 for the lower price and the extra filtration layers, and the Levoit Core 400S-P for its faster-reacting sensor and the ozone-free, Energy Star certified design.
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FeatureLevoit Core 400S-PWinix 5510Winner
Price$189.97$128.24Winix 5510
Rating4.74.6Levoit Core 400S-P
FiltrationHEPA Filter, Activated Carbon FilterHEPA Filter, Activated Carbon Filter, Washable Pre-Filter, IonizerWinix 5510
Warranty2 years2 yearsTie
Connectivity2.4 GHz WiFi2.4 GHz WiFiTie
IntegrationsGoogle Home, Alexa, Home AssistantGoogle Home, Alexa, Home AssistantTie
SensorsPM2.5PM2.5Tie
AHAM VerifideYESYESTie
Auto ModeYESYESTie

What the differences mean

Filter stack

The Winix 5510 adds a washable fine mesh pre-filter and a switchable PlasmaWave ionizer stage ahead of its True HEPA filter. The Levoit Core 400S-P uses a single sealed 3-in-1 cartridge with no washable pre-filter layer and no ionizer.

Certifications

The Levoit Core 400S-P is Energy Star certified and ozone-free. The Winix 5510 is neither, because its PlasmaWave stage is CARB compliant rather than certified ozone-free, even though it can be switched off.

Power at full speed

The Levoit Core 400S-P draws 38 W at its top speed. The Winix 5510 draws 65 W. Left running all day, that gap shows up on the electricity bill over a year.

Filter replacement interval

Winix rates the 5510's True HEPA and carbon filter set at about 12 months. Levoit rates the Core 400S-P's sealed cartridge at about 8 months, so it needs replacing more often.

Which one to buy if

What owners say

Owners of both purifiers report the auto mode doing real work: Levoit Core 400S-P owners describe the AirSight Plus sensor catching cooking or dust within seconds and ramping the fan, while Winix 5510 owners say their unit reads as oversensitive during the first week before settling in. Levoit Core 400S-P owners single out the filter's visible grime as proof it is working and the app's filter-life tracker, but flag a top opening that swallows small objects and turns retrieval into a teardown. Winix 5510 owners praise a low speed rated at 23.5 dB, quiet enough that some use it as white noise, and an automatic sleep mode triggered by the room going dark, while their complaint is Alexa linking through a clunky Winix account and a Turbo speed loud enough that nobody sleeps through it.

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Levoit Core 400S-P
  • Winix 5510

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Frequently Asked Questions

Which is better overall: the Levoit Core 400S-P or the Winix 5510?

The Winix 5510 edges ahead overall on price and filtration depth, thanks to its washable pre-filter and optional ionizer stage. The Levoit Core 400S-P counters with the higher owner rating and Energy Star and ozone-free certification.

What's the biggest difference between the Levoit Core 400S-P and the Winix 5510?

Filtration and certification trade places. The Winix 5510 has an extra washable pre-filter layer and an optional PlasmaWave ionizer, while the Levoit Core 400S-P is Energy Star and ozone-free certified with a sealed, non-washable cartridge.

Which has the better air quality sensor, the Levoit Core 400S-P or the Winix 5510?

The Levoit Core 400S-P's AirSight Plus laser sensor is documented as reacting to cooking and dust within seconds, which owners call out specifically. The Winix 5510 also has a real PM2.5 sensor driving its auto mode, but some owners describe it as oversensitive during the first week.

Does either purifier have an ionizer?

Only the Winix 5510, and it can be switched off from its own button on the panel. The Levoit Core 400S-P has no ionizer stage at all and is certified ozone-free.

Who should buy the Winix 5510?

Buyers who want the lower price, an extra washable pre-filter layer and an optional ionizer stage should choose the Winix 5510.

Who should buy the Levoit Core 400S-P?

Buyers who want the fastest-reacting sensor, the lower power draw, and Energy Star plus ozone-free certification should choose the Levoit Core 400S-P.

Full comparison table

Compare all 32 Air Purifiers side by side

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  • 32 Air Purifiers
  • 57 specs compared
  • 54 filters
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