Levoit Core 400S
#2 in Medium roomsFull review
A strong all-round pick for a living room or large bedroom, with a real particle sensor and app control at a mid-range price.
Amazon $189.97$189.97
3.9/5
A compact, quiet smart purifier for bedrooms, nurseries and home offices.
- 153 cfmSmoke CADR
- 237 sq ftRoom size
- $59.98/yearFilters
- 19 to 48 dBNoise
- 1 yearsWarranty
Check price at Amazon$112.99
Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Small and light enough for a nightstand or desk
- Very quiet 19 dB lowest setting suits bedrooms
- Carbon layer helps with everyday odors
- Filters cost about $30 every six to nine months
Cons
- Sized for small rooms around 240 sq ft
- Uses an ionizing stage that can’t be documented as switchable
- One-year warranty
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its room size. How we rank explains each one.
Specifications
| Model number | 3132111100 |
|---|---|
| Performance | |
| Smoke CADR | 153 cfm |
| Dust CADR | 159 cfm |
| Pollen CADR | 174 cfm |
| PM2.5 CADR | 156 cfm |
| CADR certified by | AHAM Verifide |
| Room size (AHAM) | 237 sq ft |
| Coverage (maker) | 1,138 sq ft |
| Noise | 19 to 48 dB |
| Efficiency | |
| Efficiency (IEF) | 7.9 cfm/W |
| ENERGY STAR | Yes |
| Energy use | 114 kWh/year |
| Power at top speed | 17 W |
| Filters | |
| Filter | Particle + carbon filter with washable fabric pre-filter |
| Activated carbon | Yes |
| Replacement | 511i Max filter (111179) |
| Replacement cost | $29.99 every 6 months |
| Yearly filter cost | $59.98/year |
| Ionizer | Yes |
| CARB certified (ozone) | Yes |
| Controls and build | |
| Air-quality sensor | particle |
| Auto mode | Yes |
| Wi-Fi app | Yes |
| Fan speeds | 4 |
| Dimensions | 14.5 x 9.3 x 9.3 in |
| Weight | 4.2 lb |
| Warranty | 1 years |
Alternatives in this room size
Coway Airmega Mighty AP-1512HH
#3 in Medium roomsFull review
A long-running favourite for a bedroom or living room that’s still cheap on Amazon. It has an air quality sensor but no app.
Amazon $154.98$154.98
Coway Airmega 150
#4 in Medium roomsFull review
A quiet, good-looking purifier for a small bedroom or nursery. Bigger rooms need more airflow for the money.
Amazon $186.29$186.29
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