LEVOIT Core 400S-P Smart HEPA Air Purifier
- 3-in-1 HEPA filter, removes up to 99.97% of particles
- 24 dB noise level, 24 watts
- 0.1 micrometer particle retention
- Voice and app control, Alexa compatible
- 12.8 pounds, 10.8 x 10.8 x 20.5 inches
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A smart HEPA tower with sleep mode, child lock and voice control for bedrooms and larger rooms. The filter is a recurring consumable, and the listing gives no filter life.
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ASIN: B08R794ZMXModel: Core 400S-PCategory: HEPA Air Purifiers
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Overview
A three-stage filter inside a round tower pulls air in through a pre-filter, then a HEPA layer and an activated carbon stage. An air quality monitor adjusts the fan automatically, and the unit connects through WiFi and Alexa.
Quiet operation, smart controls and a child lock suit a family bedroom. The limitation is that the replacement filter schedule is not in the listing.
Who it's for
Pet owners, allergy sufferers and smoke-sensitive households will use auto mode and the sleep mode. Anyone who dislikes smart features or ongoing filter replacement should look elsewhere.
Pros and cons
- Very quiet rating
- Air quality monitor
- Voice control support
- Filter life not listed
- Needs WiFi for smart features
- Fairly heavy to move
- Replacement filters recurring
Performance notes
Dust and pollen are caught in the HEPA layer while carbon takes smoke odors and gases. Auto mode raises fan speed as the monitor sees dirtier air, then drops it back.
Where it stands among hepa air purifiers
- #4 most-searched brand and model of the 72 hepa air purifiers lines we track (by search demand, not sales).
From the specs of the 101 hepa air purifiers we list; not a test result.
Specifications
| Brand | Levoit |
|---|---|
| Model | Core 400S-P |
| Dimensions & fit | |
| Particle Retention Size | 0.1 micrometer |
| Item Dimensions D x W x H | 10.8 inches D x 10.8 inches W x 20.5 inches H |
| Item weight | 12.8 pounds |
| Capacity & performance | |
| Noise Level | 24 dBlower than 68% of 48 hepa air purifiers |
| Wattage | 24 watts |
| Construction & materials | |
| Color | Cream White |
| Included components | |
| Unit Count | 1 Count |
| Warranty & support | |
| Warranty Description | ETL, Energy Star, FCC |
| Software Update Supported To Date | unknown |
| Other details | |
| Floor Area | 1733 square feethigher than 81% of 22 hepa air purifiers |
| Filter Class | 3-in-1 HEPA with activated carbon |
| Control Type | Voice, Amazon Alexa |
| Contaminant Filtration Capability | Particles, Pollen, Dust, Gases |
| Controller Type | Amazon Alexa, Vera |
| Specification Met | ETL Certified, Energy Star Certified, FCC Certified |
Closest rivals on specs
AirDoctor AD2000 Air Purifier- Floor Area 1733 vs 1220 sq ft (+42%)
- Noise Level 24 vs 30 dB (-20%)
MOOKA PR1 Air Purifier with Washable Filter- Floor Area 1733 vs 2200 sq ft (-21%)
- Item Weight 12.8 vs 8.9 pounds (+44%)
Sharp KC850U Air Purifier and Humidifier- Floor Area 1733 vs 1230 sq ft (+41%)
- Noise Level 24 vs 36 dB (-33%)
Frequently asked questions
How large a room does the Levoit Core 400S-P cover?
The listing states a floor area of 1733 square feet. Real clearing speed depends on ceiling height and fan setting.
Does the Levoit Core 400S-P come with a filter?
Yes, a 3-stage original filter is pre-installed, with a user manual and quick start guide.
Do I need Alexa to use it?
No. Control includes voice, and the unit also has auto mode and onboard controls.