Levoit Core 400S

Name: Levoit Core 400S
Brand: Levoit
SKU: Core 400S
Price: 219.99 USD
Availability: InStock

Explore the Levoit Core 400S, including its True HEPA filtration, smart features, room coverage, noise levels, filter life, energy use, and key buying factors.

Coverage

358 ft2 (33 m2) at 4.8 ACH (ideal); up to 1,718 ft2 (160 m2) at 1 ACH (max)

HEPA Grade

True HEPA Filter (3-Stage Filtration)

Noise

22-52 dB

Power

38W Rated Power

Warranty

2 Years Limited Warranty

App Control

Yes

$219.99

Key Features

3-Stage FiltrationAirSight Plus Laser SensorAuto/Sleep ModeVoice Control (Alexa/Google)QuietKEAP

Expert Analysis

Full Review

The Levoit Core 400S is a smart HEPA air purifier designed for everyday indoor air cleaning, combining a 3-stage filtration system (pre-filter, True HEPA, and a high-efficiency activated carbon layer) with automatic, app-based operation. Its AirSight Plus laser sensor feeds a built-in PM2.5 digital display and Auto Mode, adjusting fan speed in real time as indoor air quality changes. Levoit rates the Core 400S for rooms up to about 358 sq ft at a higher air-change rate, with a 38-watt rated power draw and a noise range of about 22—52 dB across its four fan speeds. Voice control through Alexa and Google Assistant, plus remote scheduling via the VeSync app, make it a practical connected purifier for bedrooms, living rooms, and other everyday indoor spaces.

Quick Verdict

Pros & Cons

Pros5 points

AirSight Plus laser sensor (more precise than infrared) with a real digital PM2.5 readout on the unit itself
Strong ideal-use coverage rating (358 ft² at 4.8 ACH) that's realistic rather than an inflated maximum figure
Low 38W rated power keeps running costs down for continuous use
Voice control (Alexa/Google) plus app control gives flexible hands-free operation
Quiet low-end noise floor (22 dB) suitable for light sleepers

Cons3 points

Combined 3-stage filter (HEPA + carbon in one cartridge) means you pay to replace carbon media even if only the HEPA layer is saturated
No Wi-Fi means no app/voice control unless you specifically buy the '400S' Wi-Fi variant — model naming across Levoit's lineup can be confusing for buyers
Plastic housing is lighter-duty than metal-cabinet competitors like Austin Air

5 pros63% positive overall3 cons

Technical Data

Full Specifications

Specification	Value
Model Number	Core 400S
Voltage	AC 120V, 60Hz (US Version)
AC/DC	AC (Mains Powered)
Weight	11 lb (5 kg)
Height	20.5 in (52 cm)
Width	10.8 in (27.4 cm) (Depth: 10.8 in / 27.4 cm)
Warranty	2 Years Limited Warranty
App/Mobile Control	✅ Yes
Timer	Yes - 1-24 Hour Timer
Display Type	LED Touch Control Panel with PM2.5 Digital Display
Fan Speeds	4
Room Coverage	358 ft2 (33 m2) at 4.8 ACH (ideal); up to 1,718 ft2 (160 m2) at 1 ACH (max)
HEPA Grade	True HEPA Filter (3-Stage Filtration)
Filter Type	3-Stage: Pre-Filter + Main HEPA + High-Efficiency Activated Carbon (ARC Formula)
Air Changes/Hour	4.8 ACH at 358 ft2
Noise Level	22-52 dB
Energy Consumption	38W Rated Power
Annual Running Cost	~$20-45/year (estimated)
Auto Mode	✅ Yes
Best For	Allergies, Dust, Smoke, Pet Dander, Bedrooms, Living Rooms
Features	3-Stage Filtration, AirSight Plus Laser Sensor, Auto/Sleep Mode, Voice Control (Alexa/Google), QuietKEAP

Common Questions

Frequently Asked Questions

What is the Levoit Core 400S designed for?

This model is designed for indoor air purification, helping filter airborne particles and other common indoor pollutants. Its effectiveness depends on factors such as room conditions, usage, and proper maintenance.

How does the Levoit Core 400S Air Purifier clean indoor air?

It uses a multi-stage filtration system designed to capture airborne particles and help reduce certain odors and pollutants. Keeping the filters properly maintained is important for normal operation.

What smart features does this air purifier offer?

The smart version provides connected-control functionality that allows users to manage and monitor the unit through compatible controls. Available features can vary by model version and software support.

When should the replacement filter be changed?

Replacement timing depends on factors such as usage, indoor air quality, and operating conditions. Users should monitor the filter and follow the manufacturer's current replacement recommendations.

What should buyers check when choosing a compatible replacement filter?

Buyers should confirm the exact model compatibility and filter specifications before purchasing a replacement filter. Checking the manufacturer's current specifications can help avoid selecting an incompatible filter.