LEVOIT PlasmaPro 400S

LEVOIT Core 400S-P Smart Air Purifier

A large-room smart air purifier with an air quality monitor, Auto Mode, and app + voice control—ideal for bedrooms, living rooms, and open layouts when you want cleaner air without fuss.

LEVOIT Core 400S-P Smart Air Purifier

Best for: Large rooms and open floor plans where you want auto-adjusting filtration + smart scheduling

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  • Category: Smart HEPA air purifier (AHAM VERIFIDE)
  • Designed for: Large-room particle filtration + odor reduction (dust, pollen, smoke, pet dander)
  • Great for: Living rooms, master bedrooms, apartments, open layouts, pet areas
  • Who it fits: Anyone who wants Auto Mode + app/voice control and an easy day-to-day routine

What it is and why households buy it

The LEVOIT Core 400S-P is built for whole-room air cleanup—especially in larger spaces where you want stronger airflow and an “automatic” set-it-and-forget-it experience. It combines 3-stage filtration with a real-time air quality monitor so it can ramp up when indoor air gets worse and settle down when things improve.

It’s a popular choice for everyday homes because it’s easy to live with: clear air-quality feedback, a practical Auto Mode, and smart controls that make schedules and routines simple.

Main features at a glance

  • AHAM VERIFIDE performance: Independently tested for air-cleaning performance, safety, and energy efficiency.
  • 3-stage filtration: Pre-filter + main filter + activated carbon to capture particles and help reduce household odors.
  • Air quality monitor + Auto Mode: Tracks airborne particles and adjusts fan speed automatically.
  • Smart control: Use the VeSync app to change settings, check air quality updates, and monitor filter life.
  • Voice assistants: Works with Amazon Alexa and Google Assistant for hands-free control.

Details readers usually want to know

Room size and placement

For best results, place it where air can circulate (not jammed behind furniture) and leave some clearance around the unit so it can pull air in and push clean air out efficiently—especially in larger rooms.

Noise and night use

A simple routine is higher speed during the day, then Sleep Mode at night. If you’re sensitive to light, use the display controls to keep the room darker while it runs.

Smart routine

Auto Mode is great for “hands-off” use, while schedules in the VeSync app help you run it harder after cooking/cleaning and quieter overnight. Voice control makes quick changes easy.

Filter maintenance

Keep the intake area clear and replace filters on schedule. Checking filter life in-app is the easiest way to keep airflow strong and performance consistent over time.

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