Air Purifiers · Head-to-head
Levoit Core 300-P vs Levoit Core 400S-P
The short answer
Levoit Core 400S-P comes out ahead overall with 7.5/10 against 7.1/10 for the Levoit Core 300-P. Levoit Core 300-P is stronger on running cost & ownership and value. Levoit Core 400S-P is stronger on noise at sleep-usable speeds, cleaning performance for bedroom size, sleep-friendly features and indoor-air safety & materials. At current verified prices, the Levoit Core 300-P costs about $104.98 less.
- Choose the Levoit Core 300-P if: One-pet households on a tight budget with a bedroom up to about 219 sq ft. It is not for odor problems or large rooms.
- Choose the Levoit Core 400S-P if: Cat owners who will buy the $64.99 Smoke Remover filter (about $255 total) for quiet auto cleaning plus real odor carbon.
Scores by criterion
| Criterion | Levoit Core 300-P | Levoit Core 400S-P |
|---|---|---|
| Noise at sleep-usable speeds | 7.0HouseFresh: 37.1 dB in sleep mode; speed 2 is 40.5–45.7 dB. | 7.8134 cfm PM1 under 45 dBA and 35.5 dBA in sleep (HouseFresh). Loud at top speed (60.3 dBA). |
| Cleaning performance for bedroom size | 5.5143 cfm rated; about 109 cfm PM1 at top speed (HouseFresh). | 7.8249 cfm PM1. Odor capability depends on the 450 g Smoke Remover filter. |
| Sleep-friendly features | 7.3Sleep mode, display off, timer; no sensor. | 8.0Laser sensor, auto mode, sleep mode and app. |
| Indoor-air safety & materials | 7.0Ozone-free and CARB; named in the labelling settlement. | 7.5No ionizer, Energy Star and CARB listed. Covered by the HEPA-labeling settlement. |
| Running cost & ownership | 8.2Cheap, common filters. | 5.5The $64.99 Smoke Remover filter about every 6 months is pricey. |
| Value | 8.8$89.99. | 7.0About $255 with the odor filter, roughly the Mighty2's price. |
Specifications
| Spec | Levoit Core 300-P | Levoit Core 400S-P |
|---|---|---|
| Exact model / SKU | Core300-P | Core 400S-P |
| Workflow type | Cylindrical 360° room purifier: pre-filter + HEPA-type + carbon, manual controls | Cylindrical 360° room purifier: pre-filter + H13-labeled HEPA + carbon |
| Lowest-speed noise (manufacturer) | 24 dB | 22 dB |
| Independent PM1 CADR at maximum | — | 249 CFM |
| Top-speed noise (manufacturer) | 54.5 dB | 52 dB |
| Independent PM1 CADR at low-noise setting | — | 134 CFM |
| Lowest-speed noise (independent measurement) | 37.1 dBA | 35.5 dBA |
| Quiet-test threshold | — | HouseFresh: fastest speed under 45 dBA at 3 ft |
| CADR (smoke where given, else headline) | 143 cfm | 231 cfm |
| Measured noise range | — | 35.5 (sleep)–60.3 (HouseFresh) |
| Recommended room size (4.8–5 ACH / AHAM) | 222 sq ft | 358 sq ft |
| Max power draw | 56 W | 38 W |
| Ionization/electronic stage present | No | No |
| Sleep / night mode | Yes | Yes |
| App control | No | Yes |
| Ionizer / electrostatic stage | None (listed ozone-free) | — |
| Filter type | 3-stage: pre-filter + HEPA-type + activated carbon | 3-stage; Pet Allergy, Toxin Absorber, Smoke Remover (HEACAFLVNUS0081A, $64.99) options |
| Carbon-media format | — | Pelleted carbon; 450 g in Smoke Remover filter (HouseFresh) |
| Main filter life | — | 6 months |
| OEM replacement-filter price | 29.99 USD | 49.99 USD |
| Manufacturer direct/list price | — | 219.99 USD |
| Pet-hair pre-filter / intake design | Fabric pre-filter on cylinder | Fabric pre-filter wrapped on cylinder |
| Activated carbon amount (where disclosed) | — | 450 g (Smoke Remover filter, HouseFresh) |
Levoit Core 300-P
Pros
- Budget price
- 37.1 dB in sleep mode
- No ionizer
- Compact
- Low running cost
Cons
- Low airflow
- Needs higher speeds to clean a 200 sq ft room
- No app
- Named in the Vesync filter settlement
Good value for a small room, as long as you accept running it above sleep mode.
Full Levoit Core 300-P review →Levoit Core 400S-P
Pros
- Strong odor carbon with the Smoke Remover filter
- Quiet auto cleaning with a laser sensor
- 35.5 dBA in sleep
- App control
- No ionizer
Cons
- Odor setup costs about $255 in total
- Noisy at top speed, 60.3 dBA
- Filters need replacing about every 6 months
The best mainstream choice for cat owners who want real odor control and quiet nights, provided you budget for the upgraded filter.
Full Levoit Core 400S-P review →Both products are part of our guide The Best Air Purifiers for Pet Dander and Odor of 2026, where you can see every pick, how we score and current prices from each retailer.