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Home / Products / Air Purifier / PlasmaPro™ 400S Smart True HEPA Air Purifier
PlasmaPro 400S

PlasmaPro™ 400S Smart True HEPA Air Purifier

Refresh indoor air with the Levoit PlasmaPro 400S Smart True HEPA Air Purifier. With powerful H13 True HEPA filtration, smart control, and advanced features such as the plasma function, you can completely purify your air in a matter of minutes. 
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Refresh indoor air with the Levoit PlasmaPro™ 400S Smart True HEPA Air Purifier. With powerful H13 True HEPA filtration, smart control, and advanced features such as the plasma function, you can completely purify your air in a matter of minutes.

Product Specs


What's in the Box


Voltage: AC 120V, 60Hz

Rated Power: 38W

Effective Range: 403 ft² / 37 m²

Dimensions: 10.8 x 10.8 x 20.5 in / 27.4 x 27.4 x 52 cm 

Weight: 14.12 lb

Operating Conditions Temperature: 14°–104°F / -10°–40°C

Humidity: < 85% RH

Noise Level: 24–52dB

CADR: 260 CFM / 442 m³/h

Standby Power: < 2W

  • 3-Stage Filtration: Captures at least 99.97% of airborne particles 0.3 microns in size. HEPASmart™ Technology enhances filtration, capturing 99.99% of mold and bacteria, as well as 99.9% of viruses.
  • ARC Formula™: Helps neutralize household odors and biologically decomposes molecules, extending the filter life.
  • Plasma Function: Negative and positive ions bind with pollutants and break down their molecular structure.
  • VortexAir™ Technology: Increases indoor air circulation and filtration efficiency.
  • AirSight Plus™ Technology: Scans surrounding air for airborne particles and adjusts fan speed when Auto Mode is turned on.
  • QuietKEAP™ Technology: Keeps noise levels as low as 24dB.
  • ** PM2.5 Display:** Displays the amount of airborne particles detected by the laser dust sensor.
  • Air Quality Indicator Rings: Indicates real-time air quality as Bad, Moderate, Good, or Very Good.
  • App Control: Control settings, check filter life, receive real-time air quality updates, and more.
  • Voice Control: Connect the smart air purifier to Amazon Alexa or Google Assistant™ for hands-free control.

  • Comparison Chart: Compare different air purifer models here.

1 x Smart Air Purifier

1 x True HEPA 3-Stage Original Filter (Pre-Installed)

1 x User Manual

1 x Quick Start Guide

Read more about our warranty here: https://levoit.com/warranty-policy-levoit

Product Manuals

Manual (US)