Levoit Core 300S
The same quiet Core 300 hardware wrapped in full smart-home control. The 300S adds WiFi, Alexa and Google Assistant voice commands, and app-based scheduling, so the purifier can ramp down automatically at bedtime and back up in the morning without touching a button.
We may earn a commission when you buy through our links. Prices and availability shown are accurate as of Jul 13, 2026 and are subject to change; the merchant's price at purchase applies.
Our Verdict
Identical filtration to the Core 300, but full WiFi, voice control, and auto-scheduling justify the highest price in this lineup for households that want the purifier to run itself on a bedtime routine.
Score Breakdown
Pros & Cons
Pros
- •Full WiFi app control plus Alexa/Google voice commands
- •Same proven 24 dB Sleep Mode as the standard Core 300
- •Schedules let it quiet down at bedtime and resume automatically
- •Display fully dims for a dark bedroom
Cons
- •Priciest of the three Levoit models here for the same core filtration
- •Smart features depend on a stable home WiFi connection
- •Fixed pre-filter (not washable), same as the base Core 300
Specifications
| CADR (Smoke) | 141 CFM |
| Room Coverage | ~219 sq ft (AHAM) |
| Filter Type | 3-in-1: pre-filter, H13 HEPA, activated carbon |
| Noise Level (Sleep Mode) | 24 dB |
| Smart Features | VeSync WiFi app, Alexa/Google, auto scheduling |
| Filter Replacement Cost | ~$35 every 6-8 months |
| Dimensions | 8.7" x 8.7" x 14.2" |
Quick Answers
What is the cadr (smoke) of the Levoit Core 300S?
Levoit Core 300S cadr (smoke): 141 CFM.
What is the room coverage of the Levoit Core 300S?
Levoit Core 300S room coverage: ~219 sq ft (AHAM).
What is the filter type of the Levoit Core 300S?
Levoit Core 300S filter type: 3-in-1: pre-filter, H13 HEPA, activated carbon.
What is the noise level (sleep mode) of the Levoit Core 300S?
Levoit Core 300S noise level (sleep mode): 24 dB.
What is the smart features of the Levoit Core 300S?
Levoit Core 300S smart features: VeSync WiFi app, Alexa/Google, auto scheduling.
What is the filter replacement cost of the Levoit Core 300S?
Levoit Core 300S filter replacement cost: ~$35 every 6-8 months.
What is the dimensions of the Levoit Core 300S?
Levoit Core 300S dimensions: 8.7" x 8.7" x 14.2".
How much does the Levoit Core 300S cost?
The Levoit Core 300S lists at $149.99 at Amazon as of July 13, 2026. Prices change often, so the merchant page shows the current figure.
Who is the Levoit Core 300S for?
It suits smart-home households that already use Alexa or Google Assistant routines, buyers who want the purifier to run on a bedtime/wake schedule automatically, anyone upgrading from a Core 300 who wants voice control. It is not the right pick for buyers on a strict budget who won't use the app or voice features, homes without reliable WiFi coverage in the bedroom.
Is the Levoit Core 300S worth buying?
The same quiet Core 300 hardware wrapped in full smart-home control. The 300S adds WiFi, Alexa and Google Assistant voice commands, and app-based scheduling, so the purifier can ramp down automatically at bedtime and back up in the morning without touching a button. It ranks #3 in our Top 5 Air Purifiers for Bedrooms. Identical filtration to the Core 300, but full WiFi, voice control, and auto-scheduling justify the highest price in this lineup for households that want the purifier to run itself on a bedtime routine.
Who Is This For?
Best For
- Smart-home households that already use Alexa or Google Assistant routines
- Buyers who want the purifier to run on a bedtime/wake schedule automatically
- Anyone upgrading from a Core 300 who wants voice control
Not For
- Buyers on a strict budget who won't use the app or voice features
- Homes without reliable WiFi coverage in the bedroom
Where to Buy
Appears In
Compare Head-to-Head
Customer Reviews
Alternatives to Consider
Levoit Core 300
Levoit
The default recommendation for a nightstand-sized bedroom purifier. The Core 300 pairs a genuine H13 HEPA filter with a dedicated Sleep Mode that drops fan noise to 24 dB and dims the display — quiet enough to run all night next to the bed without being a distraction.
Levoit Vital 100S
Levoit
The Core 300's smarter sibling. For roughly $15 more, the Vital 100S adds a real-time PM2.5 readout on the display, VeSync app scheduling, and a washable pre-filter that cuts down on replacement-filter waste — while keeping the same 25 dB sleep-mode noise floor.
Winix A230
Winix
A true HEPA alternative to the Levoit lineup with a built-in air quality sensor and Auto Mode that reacts to what it detects overnight. Its PlasmaWave odor feature can be switched off entirely, which matters for anyone sensitive to ionizer-style purifiers in a closed bedroom.
GermGuardian AC4825E
GermGuardian
The lowest entry price in this lineup, and the pick for buyers who mainly want a HEPA filter running quietly on low overnight. Its 22-inch tower adds an optional UV-C sanitizer stage that the other purifiers here don't offer, though it lacks a dedicated ultra-quiet sleep setting.