LEVOIT PlasmaPro 400S
Air Purifiers

PlasmaPro 400S

LEVOIT

Released Feb 1, 2023 · Analysis updated Mar 31, 2026

Smart air purifier with auto mode, quiet operation, filter indicator, and energy-efficient 38W power for large rooms up to 164 m². The LEVOIT PlasmaPro 400S scores 82/100 based on 4 expert reviews in the air purifiers category. Coverage includes reviews from Consumerreports, Breathequality, Topconsumerreviews, and Versus.

Critic Score

What's this?
82

based on 4 expert reviews

ConsumerreportsBreathequalityTopconsumerreviewsVersus

Low confidence · only 4 reviews

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Pros

  • Auto mode(3)
  • Quiet operation(2)
  • Filter indicator(2)

Cons

  • High annual filter cost(2)

4 Expert Reviews

85
Major publication

The Levoit PlasmaPro 400S-P is a floor/tabletop air purifier with filter indicator, programmable timer, auto mode, dirt sensor, and 4 speeds for 363 sq ft spaces.

83
Independent publication02/2023

The Levoit PlasmaPro 400S is essentially the Core 400S with PlasmaPro technology, offering solid performance and smart features but at a higher price point.

80
Independent publication02/2026

The LEVOIT PlasmaPro 400S Smart Air Purifier offers 3-stage filtration, smart controls, and quiet operation, with generally satisfactory performance for most everyday users.

79
Established publication

The Levoit PlasmaPro 400S is a smart air purifier with a large recommended room size of 164 m2, quiet operation at 22 dB minimum, and energy-efficient performance at 38W.