Dreame CVF20B vs Levoit Core 400S
A spec-only comparison using ENERGY STAR certification data. We have not tested either unit, and features like noise, filter price and build quality are not covered here.
- Cleaning speed: the Levoit Core 400S has the higher smoke CADR (231 vs 224 cfm, 3% more).
- Running cost: the Dreame CVF20B uses less electricity per ENERGY STAR (149 kWh/yr), about $16.11/yr less at the U.S. average rate (estimate).
- Room size: by AHAM's 2/3 rule, up to about 336 sq ft vs 346 sq ft.
Both sit in ENERGY STAR data as Medium rooms (150–249 cfm) units by smoke CADR. Listed differences: only the Levoit Core 400S lists an air-quality-sensor auto mode; only the Dreame CVF20B meets ENERGY STAR Most Efficient criteria. Over 5 years at the U.S. average rate, the electricity difference is about $80.56 (estimate).
| Dreame CVF20B | Levoit Core 400S | |
|---|---|---|
| Smoke CADR (cfm) | 224 | 231 |
| Dust CADR (cfm) | 223 | 240 |
| Pollen CADR (cfm) | 245 | 259 |
| ENERGY STAR room size | 347 sq ft | 358 sq ft |
| AHAM 2/3-rule room size | 336 sq ft | 346 sq ft |
| Annual energy | 149 kWh | 237 kWh |
| Est. electricity/yr (U.S. avg) | $27.28 | $43.39 |
| Smoke CADR per watt | 9 | 5.75 |
| Ozone (reported) | 0 ppb | 0 ppb |
| Technology | Fan and Filter | Fan and Filter |
| Filters listed | HEPA-Type | HEPA-Type |
| Auto mode | None | Air Quality Sensor,Timer |
| Connected | Yes | Yes |
| Most Efficient | Yes | No |
| Source | ENERGY STAR record 4614554 | ENERGY STAR record 4027325 |
Purchase price and filter cost are not included (data gap). Electricity estimates use 18.31¢/kWh (EIA).
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See Dreame air purifiers on the manufacturer's site (plain link, not an affiliate link)
See Levoit air purifiers on the manufacturer's site (plain link, not an affiliate link)