LEVOIT Core 400S specs
LEVOIT Core 400S is an ENERGY STAR certified air purifier listed for rooms up to 358 sq ft with a smoke CADR of 231 cfm and 237 kWh per year of energy use.
LEVOIT Core 400S lists a smoke CADR of 231 cfm (higher than 62% of the 216 certified ones) for rooms up to 358 sq ft, at 237 kWh per year and 0 ppb reported ozone.
Official specs
| CADR — smoke | 231 cfm |
|---|---|
| CADR — dust | 240 cfm |
| CADR — pollen | 259 cfm |
| Room size listed | 358 sq ft |
| Annual energy use | 237 kWh/yr |
| Efficiency (smoke CADR per watt) | 5.8 cfm/W |
| Ozone emissions | 0 ppb |
| Technology | Fan and Filter |
| Filter type | HEPA-Type |
| Automatic mode | Air Quality Sensor,Timer |
| Connected | Yes |
| Noise level | n/c |
| ENERGY STAR certified | 2024-09-23 |
Similar air purifiers
| Model | CADR (smoke)cfm | Room sizesq ft | EnergykWh/yr | Ozoneppb |
|---|---|---|---|---|
| LEVOIT Core 400S this page | 231 | 358 | 237 | 0 |
| Honeywell HPA4300B | 229 | 355 | 185 | 0 |
| Winix C610 | 248 | 384 | 235 | 1 |
| Coway AP-1523D | 255 | 395 | 219 | 0 |
Skip it if
- Your room is larger than 358 sq ft: ENERGY STAR lists this model for rooms up to that size (8-foot ceiling).
- You specifically want a filter listed as “HEPA”: ENERGY STAR lists this one as “HEPA-Type”.
- Low running energy is your priority: it lists 237 kWh per year, and 74% of certified air purifiers list less.
How it ranks in the ENERGY STAR list
- smoke CADR: 231 — rank 81 of 216 certified air purifier models (higher is better).
- annual energy use: 237 — rank 161 of 216 certified air purifier models (lower is better).
- energy efficiency (CFM/W): 5.8 — rank 155 of 216 certified air purifier models (higher is better).
Ranks compare this model with every air purifier in the ENERGY STAR dataset (2026-11-06), not with products on sale today.
Reading these specs
- CADR
- Clean Air Delivery Rate, in cubic feet per minute, as listed for smoke, dust and pollen. Higher means more air cleaned per minute for that particle size.
- Room size
- The room size in square feet that ENERGY STAR lists for this model.
- kWh/yr
- Annual energy use as listed by ENERGY STAR.
- Ozone
- Ozone emissions in parts per billion as listed.
Noise level is not part of the ENERGY STAR dataset, so it shows as n/c. Check the maker’s own specification sheet for decibels.
Where to buy
Search Amazon.com for this exact model. Prices and availability change, so we don’t print them.
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Frequently asked questions
What room size is the LEVOIT Core 400S listed for?
Start with the room-size rating, then compare it with the room where the unit will sit. ENERGY STAR lists 358 sq ft for this model, with a smoke CADR of 231 cfm. Ceiling height and layout change real-world results, so treat it as a rated figure and leave the clearance the maker’s manual asks for around the intake and outlet.
How much energy does the LEVOIT Core 400S use?
The listing gives 237 kWh per year and an efficiency of 5.8 cfm per watt.
What filter does the LEVOIT Core 400S use, and does it produce ozone?
ENERGY STAR lists the filter type as HEPA-Type. Ozone emissions are listed at 0 ppb. Compare the stated filter type rather than marketing language such as “HEPA-like”. Noise level is not part of the ENERGY STAR dataset (n/c), so see the maker’s specifications for decibels.
Sources
- ENERGY STAR certified air purifier data, record 4027325 (data.energystar.gov, dataset gaa3-swy6, updated 2026-11-06)
- ENERGY STAR product guidance for air purifiers
We compile and compare published data; we do not run our own product tests. See How We Compare.