HearthCircuit

Smart Air Purifier

Levoit Core 300S Smart Air Purifier

by Levoit

For anyone wanting straightforward, effective air purification enhanced by smart home convenience, the Levoit Core 300S delivers strong value.

Benchmarked alongside 55 other smart home products in our lab, averaging 4.5/5 across the catalog.

Overall score4.4/5.0
Verdict
For anyone wanting straightforward, effective air purification enhanced by smart home convenience, the Levoit Core 300S delivers strong value. It won't replace a whole-home HVAC filtration system, but for single rooms it's a dependable, quiet, and genuinely smart appliance worth adding to a connected household.

Technical Specifications

Coverage Area219 sq ft
Filter TypeH13 True HEPA
CADR140 CFM
Noise Level24-50 dB
ConnectivityWi-Fi, Alexa, Google Assistant
  • True HEPA H13 filter captures 99.97% of particles down to 0.3 microns
  • Wi-Fi connectivity with VeSync app for remote monitoring and control
  • Compatible with Amazon Alexa and Google Assistant voice commands
  • Real-time PM2.5 air quality display with color indicator
  • Auto Mode adjusts fan speed based on live sensor readings
  • Sleep Mode with dimmed display and quiet operation
  • Customizable filter options including pet allergy and toxin absorber
  • Filter replacement reminders via app notification

Pros

  • ✓ Effective HEPA filtration for allergens, dust and pet dander
  • ✓ Simple, intuitive app with useful automation features
  • ✓ Quiet enough for bedroom use, especially in Sleep Mode
  • ✓ Compact cylindrical design fits easily into most rooms
  • ✓ Reasonably priced replacement filters compared to competitors

Cons

  • ✕ No true auto-off timer beyond scheduled presets
  • ✕ App occasionally lags or disconnects during Wi-Fi hiccups
  • ✕ No air quality history graph for long-term tracking
  • ✕ Higher fan speeds can be noticeably louder in a quiet room
88%

Levoit Core 300S Smart Air Purifier

by Levoit

  • True HEPA filtration
  • Smart app control
  • Whisper-quiet sleep mode
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Trusted by readers of HearthCircuit56 products reviewedSite average 4.5/5

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The Levoit Core 300S Smart Air Purifier brings true HEPA filtration into the connected home, pairing a three-stage filter system with Wi-Fi enabled smarts. It captures up to 99.97% of airborne particles as small as 0.3 microns, including dust, pollen, pet dander and smoke, making it a solid pick for bedrooms, nurseries and living rooms up to roughly 219 square feet. The cylindrical design with 360-degree air intake keeps it unobtrusive on a nightstand or in a corner while still moving air efficiently through the space. What sets the Core 300S apart from purely mechanical purifiers is its integration with the VeSync app and both Amazon Alexa and Google Assistant. From the app you can monitor real-time PM2.5 readings on a color-coded display, switch between manual and Auto Mode, schedule operation around your routine, and receive filter replacement reminders so you are never caught off guard. Auto Mode uses the built-in laser particle sensor to automatically ramp fan speed up or down based on detected air quality, which helps balance purification performance with quiet operation and energy use. Built with a sleep-friendly mindset, the unit offers a dedicated Sleep Mode that dims the display and drops fan noise to a whisper, letting it run through the night without disturbing rest. The original filter (H13 True HEPA) and optional specialty filters for pets, toxin absorption or additional odor control let owners tailor filtration to their specific household needs, and the plastic housing is easy to wipe down. Overall it strikes a practical balance between smart convenience and genuinely effective air cleaning.

Customer reviews

Great for allergies — Marcus T. (2024-01-12)
Since running this in my bedroom every night my sinus issues have noticeably improved. The app is easy to use and Auto Mode does exactly what it should.
Quiet and smart — Priya S. (2023-11-03)
Love that I can check air quality from my phone. Only wish it had a longer scheduling window built into the app without needing to set it manually each week.
Solid purifier, minor app quirks — Dan R. (2024-02-20)
Works great and the filter really does trap pet hair and dander. Occasionally the app takes a few tries to reconnect after a router restart, but overall happy with it.
Perfect nursery addition — Elena K. (2023-12-15)
Sleep Mode is genuinely quiet, my daughter doesn't even notice it running. The filter replacement reminder is a nice touch so I never forget.