Levoit Core 300S Smart True HEPA Air Purifier
The Levoit Core 300S is the undisputed benchmark for small-to-medium room air purifiers. Equipped with a laser dust sensor, automatic fan adjustment, and full VeSync app connectivity, it delivers genuine H13 True HEPA filtration at an almost silent 22 dB in Sleep Mode.
3-Year True Cost of Ownership Model
AHAM AC-1 verified room air filtration throughput for fine particulate and smoke reduction.
Acoustically evaluated across whisper-quiet sleep mode and maximum turbo airflow settings.
Sized for 4.8 air changes per hour (ACH) in designated living room and bedroom layouts.
Total routine scheduled replacement filter expense projected over continuous operation.
- Whisper-quiet Sleep Mode (22 dB) with all display lights turned off
- Real-time airborne PM2.5 infrared laser sensor with auto mode
- Vesync app provides voice control (Alexa/Google) and filter life tracking
- Compact footprint with 360-degree cylindrical air intake
- Only delivers 141 CADR (not suited for large living rooms)
- Activated carbon layer is relatively thin for heavy cigar or pet odor
Verified Engineering Specifications
| Nominal Dimensions | Cylindrical 3-in-1 Filter (Core 300-RF) | Actual Dimensions | 7.5 in diameter x 7.5 in height |
|---|---|---|---|
| Filter Depth | Cylindrical Cartridge | Media Construction | H13 True HEPA + Granular Activated Carbon + Fine Nylon Pre-Filter |
| Smoke CADR | 141 CFM | Dust / Pollen CADR | 140 / 145 CFM |
| Acoustic Noise | 22 – 48 dB | Rated Room Coverage | 219 sq ft @ 4.8 ACH (547 sq ft @ 2 ACH) |
| Replacement Filter Cost | $26.00 per filter | Replacement Interval | Every 6–8 months |
| Annual Consumable Cost | $40.00 – $52.00/yr (1.5 to 2 filter changes) | Compatible Equipment | Uses Core 300-RF, Core 300-RF-TX (Toxin), Core 300-RF-PA (Pet Allergy), Core 300-RF-MB (Mold) |
Our Take on the Levoit Core 300S Smart True HEPA Air Purifier
The best all-around compact air purifier for bedrooms. Affordable upfront price, rock-solid app features, AHAM-verified CADR ratings, and reasonably priced replacement filters make it our highest-rated room unit.
Filtration Performance Note
H13 True HEPA captures 99.97% of airborne particles down to 0.3 microns, verified by AHAM testing.
Installation, Airflow Direction & Maintenance Protocol
Place 15 inches away from walls. Vacuum outer nylon pre-filter every 2-4 weeks; replace cartridge every 6 to 8 months.
Common Questions About the Levoit Core 300S Smart True HEPA Air Purifier
What is the difference between Core 300 and Core 300S?
The 'S' designation adds an onboard AirSight laser dust sensor, automatic fan speed control, Wi-Fi app connectivity, and Amazon Alexa/Google Assistant compatibility.
Does the Core 300S emit ozone?
No. The Core 300S is 100% ozone-free, certified by the California Air Resources Board (CARB). It does not use ionizers or UV-C lights.
How much do replacement filters cost?
Official OEM Levoit Core 300-RF filters cost approximately $24–$26 and last 6 to 8 months under continuous daily use.
Comparable Air Purifiers
Levoit Core 200S Smart Air Purifier
When to choose: Comparable small-room air purifier alternative.
Levoit Core 300 True HEPA Purifier
When to choose: Alternative small-room air purifier with similar CADR profile.