Levoit Core400S Smart HEPA Air Purifier

Smart: The Levoit Core400S is a corded HEPA air purifier with a PM2.5 sensor, automatic fan adjustment and app control. Its 24 dB figure applies to quiet sleep mode, while its stated room coverage differs across the listing, so check the coverage claims against your room size before buying.

At a glance

Three-stage filtration is described as including HEPA and active carbon filtration. The listing says carbon reduces fireplace smoke and odours.
AirSight Plus detects PM2.5 and Auto Mode adjusts fan speed in response, according to the listing.
The stated 24 dB noise figure is specifically for quiet sleep mode, with display lights off.
App control and voice control are listed, alongside hand controls.

Price

£175.99Save 20%

Reference price: ~~£219.99~~

Price checked: 12 Nov 2026

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Often bought together

Levoit Smart HEPA Air Purifier for Bedroom Home, CADR 433m³/h, 180m² | Alexa & APP, Air Quality Sensor with Auto Mode, Remove

Pros and cons

Pros

A PM2.5 sensor and automatic fan adjustment can reduce the need to change fan speed manually.
The claimed 24 dB sleep mode gives buyers a low-noise setting to consider for bedroom use.
The listed active carbon stage adds an odour and smoke-reduction function beyond particle filtration.

Technical specifications

17 specifications

Identity
Brand	Levoit
Model	Core400S
Colour	Off White
Filter type	HEPA
Particle retention size	0.3 Micron

Air cleaning and operation
CADR	433m³/h
Coverage in title	180m²
Floor area in details	1787 Square Feet
Noise level	24 Decibels
Wattage	24 watts
Special features	3- Stage Filtration, AirSight Plus PM 2.5 sensor, QuietKEAP only 24dB in quiet sleep mode, Stable WiFi and Bluetooth dual connection, VortexAir circulation technology

Connectivity and controls
Control method	Voice

Power and dimensions
Power configuration	Corded Electric
Dimensions	27.4D x 27.4W x 51.9H centimetres
Weight	4.96 Kilograms

Other listed details
Specification met	CE Certified, RoHS Certified
Warranty	2 year warranty.

What to know before buying

Listing details to confirm

Listing details are inconsistent on coverage: the title says 180m², the specification says 1787 Square Feet and feature text describes 36㎡ in 12 minutes and 90㎡ in 30 minutes. The CADR of 433m³/h is also presented alongside those different coverage claims, so confirm the suitable room size and rating basis before purchase. The 24 dB figure applies only to quiet sleep mode.

Who is it for?

A good fit for

Buyers wanting a smart air purifier with PM2.5 sensing and automatic fan adjustment.
Bedroom users who value a specifically stated quiet sleep mode.
Households seeking HEPA filtration with an additional carbon stage for odours, subject to the listing’s room-coverage discrepancies.

Less suited to

Buyers who need a clearly consistent, substantiated room-coverage figure before choosing a purifier.
Those seeking a battery-powered unit, as the listed power configuration is corded electric.

Levoit Core400S Smart HEPA Air Purifier · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 23,696 ratings

5 stars77%77%
4 stars14%14%
3 stars5%5%
2 stars1%1%
1 star3%3%

Customer feedback reports effective air cleaning and reduced dust and odours, with some customers describing quieter operation on the lowest setting, straightforward app use and allergy-related relief. These experiences may matter to buyers considering its HEPA filtration, sensor and sleep mode, but they do not establish performance for every home or resolve the listing’s conflicting room-coverage figures. The overall rating distribution is strongly weighted towards five- and four-star ratings, while a smaller share is lower-rated.

Positive themes

Customers describe effective air cleaning and reductions in dust and odours.
Customers appreciate quieter operation on the lowest setting and straightforward app connectivity.
The feedback summary includes reports of allergy-related relief.

Frequently asked questions

What coverage does the Levoit Core400S claim?

The listing gives 180m² in the title and 1787 Square Feet in the specifications, while feature text describes different room sizes and cleaning times. These claims do not align clearly, so verify the appropriate coverage for your room before buying.

Is the 24 dB noise figure for every setting?

No. The listing associates 24 dB with quiet sleep mode. It does not establish that the purifier makes that level of noise in other modes.

Does it adjust fan speed automatically?

The listing says its PM2.5 sensor detects airborne particles and Auto Mode adjusts fan speed in response.

Does it need to be plugged in?

Yes. The listed power configuration is Corded Electric.