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The Levoit Core 300S has over 50,000 Amazon reviews and a 4.3-star rating. After testing it for 30 days, here’s what we think.
Design
Compact cylinder, about 14 inches tall. Fits on a nightstand or desk. The white design blends into most rooms. Touch controls on top with a small display.
Filtration
3-stage filtration:
- Pre-filter (captures large particles)
- H13 True HEPA (captures 99.97% of particles ?0.3 microns)
- Activated carbon (reduces odors and VOCs)
The H13 HEPA is a step above the H11 HEPA found in many budget purifiers.
Performance
We tested in a 250 sq ft bedroom:
- Dust: Noticeably less dust on surfaces after 1 week
- Pet dander: Effective ?reduced allergy symptoms
- Cooking odors: Moderate improvement (carbon filter is small)
- Smoke: Limited ?needs a larger carbon filter for heavy smoke
Smart Features
- VeSync app control
- Voice control (Alexa/Google)
- Auto mode with air quality sensor
- Sleep mode (whisper quiet)
- Timer and scheduling
- Filter life tracking
Noise Level
- Sleep mode: 24 dB (barely audible)
- Low: 32 dB
- Medium: 40 dB
- High: 48 dB
- Turbo: 55 dB (noticeable but not annoying)
Filter Replacement
Replace every 6-8 months. Filters cost $25-35 each. Annual cost: ~$50-70.
Who Should Buy?
?You want clean air on a budget ?Bedroom or small room use ?You want smart app control ?You have mild allergies
Who Should Skip?
?You need to cover a large room (300+ sq ft) ?You have heavy smoke or odor issues ?You want whisper-quiet on high speed
Verdict
The Levoit Core 300S is the best air purifier under $100. It’s not the most powerful, but for small to medium rooms, it delivers excellent filtration at an unbeatable price. The smart features are a bonus.
Rating: 4.3/5 ⭐⭐⭐⭐
FAQ
How big of a room can the Levoit Core 300S handle?
Levoit rates it for 219 sq ft. In practice, it works well in rooms up to 250 sq ft. For larger rooms, consider the Levoit Core 400S.
How often do I need to replace the filter?
Every 6-8 months depending on usage and air quality. The app tracks filter life and notifies you when it’s time.
Is the Levoit Core 300S loud?
On sleep mode, it’s virtually silent (24 dB). On turbo, it’s 55 dB ?similar to a normal conversation. Most people use it on low or auto.
Last updated: June 2026