Levoit Core 400S Smart Air Purifier: Powerful Cleaning for Open Spaces

If you have a large living room, an open-concept kitchen, or high ceilings, standard air purifiers often struggle to keep up. The Levoit Core 400S Smart Air Purifier is engineered specifically for these challenging spaces. It combines industrial-grade coverage with whisper-quiet operation, ensuring your air stays fresh without dominating your home environment.

Capable of refreshing the air in a massive 1,733 sq. ft. space in just one hour (or cleaning a 403 sq. ft. room 5 times per hour), this unit provides the heavy-duty performance needed for households with pets, allergies, or frequent cooking.

AirSight Plus™: It Sees What You Can’t

The standout feature of the Levoit Core 400S Smart Air Purifier is its precision. Equipped with AirSight Plus™ technology, a sensitive laser dust sensor scans the surrounding air for microscopic particles.

• Real-Time Feedback: The PM2.5 display on the unit shows you the exact amount of airborne particles detected, while the colored LED ring gives you a quick visual status (Blue = Very Good, Red = Bad).

• Intelligent Auto Mode: You don’t need to micromanage your air quality. In Auto Mode, the fan speed adjusts instantly based on the sensor readings. If you start frying food or vacuuming, the Core 400S ramps up to clear the air and quiets down automatically when the job is done.

3-Stage Filtration with ARC Formula™

Reliable filtration is about more than just capturing dust. The Levoit Core 400S uses a robust 3-stage defense system designed for complex household pollutants:

1. Fine Pre-Filter: Captures large contaminants like pet fur, lint, and fibers.

2. H13 True HEPA Filter: Traps 99.97% of fine particles 0.3 microns in size, including pollen, dust mites, and smoke particles.

3. Activated Carbon Filter (ARC Formula™): Unlike standard carbon filters, Levoit’s custom formula is biologically active to break down odors from cooking, pets, and smoke, rather than just trapping them.

Therefore, this purifier is particularly effective for smokers or homes with “wet dog” smells. To maintain this performance, always use genuine Replacement Filters.

Smart Control & Quiet Operation

Despite its power, the Levoit Core 400S Smart Air Purifier is designed to live quietly in your home.

• Sleep Mode: The lights turn off and the fan slows to a near-silent 24dB, making it suitable for master bedrooms.

• VeSync App: Control settings, view air quality history, and check filter life from your smartphone.

• Voice Control: Fully compatible with Amazon Alexa and Google Assistant for hands-free adjustments.

Compare this model to our other high-capacity units in the Air Purifiers collection.

Technical Specifications