Levoit (brand store)white $219
Shippingabout 3–7 days
Returns–
Levoit Core 400S-P
Rank 1 of 13 robots for large rooms in our ranking, tested by .in our ranking, tested by
Score 8.3 out of 10
Lab tests, 60% of the score: no lab has tested it.
Owners’ ratings, 25%: none yet at the stores that ship to the United States, so this part is left out and the others count for more.
Features, 15%: 8.3, 59 of the 71 points for the facts the maker states.
Price does not count, so a discount never lifts a model. Only robots a lab has tested are ranked.
The highest score today is 8.4.
Is the Levoit Core 400S-P right for your home? Find out in 7 questions →
Before you buy, compare it with 2 recommended alternatives
Beside it, two models on sale today that come closest to it on score and price, with the same kind of station where we have them.
Green is the best of these 3, also when they share the lead.
| This model Levoit Core 400S-P Best on 1 fact | Lower score, 14% cheaper Levoit Vital 200S-P Best on 1 fact | Lower score, 45% pricier Blueair DustMagnet 5440i | |
|---|---|---|---|
| Price and ranking | |||
| Lowest price | $219Levoit (brand store) | $189Levoit (brand store) best | $319Blueair (brand store) |
| Score | best | ||
| Rank | rank 1 of 13 for large rooms | rank 5 of 13 for large rooms | rank 3 of 13 for large rooms |
| Customer rating | – | – | – |
| Station | |||
| Room size same on all | large rooms | large rooms | large rooms |
| Size, noise and age | |||
| Height lower is better | – | – | 22 in (55.9 cm) |
| On the market since | June 2023 | June 2023 | May 2025 |
Facts as the maker states them. A dash means the maker does not name it. Each model’s page gives the source of every fact. Noise is the maker’s own figure, so we do not judge it, and a customer rating only counts from 20 reviews.
Prices per store
On October 15, 2026 the lowest price for the Levoit Core 400S-P is $219 at Levoit (brand store), shipping to the United States included. In our ranking it is rank 1 of 13 for large rooms, with a score of 8.3 out of 10.
All prices include shipping to the United States. Sales tax is added at checkout. We may earn a commission when you buy through these links. It never changes our ranking.
Levoit (brand store)white 
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Price history
Lowest price per day
Lowest since Oct 13$219
Highest since Oct 13$219
Price drops since Oct 130no drop seen yet
Levoit Core 400S-P specifications
The numbers that matter first, then every fact by group. As published by the maker or the store we read it from.
Levoit · on the market since June 2023
Clean air delivery rate (CADR)231 cfm
Room size we compare on352 ft²
Noise at the lowest speed22 dB
Power at the highest speed38 W
Running cost: Electricity: about $43 a year. Electricity at EIA Short-Term Energy Outlook, October 2026, on the 237 kWh a year its energy label states.
Cleaning performance 9 facts
- Clean air delivery rate (CADR)
How much clean air the purifier delivers an hour, measured with smoke, dust and pollen. A higher figure cleans a bigger room or the same room faster.
- 231 cfm (393 m³/h)
- CADR measured to
The test the CADR comes from. AHAM AC-1 and the DOE test are independent and comparable. A maker's own test is not.
- DOE test
- CADR for smoke
The CADR measured with tobacco smoke, the finest of the three test particles. It is the figure to read for wildfire smoke.
- 231 cfm (393 m³/h)
- CADR for dust
The CADR measured with dust.
- 240 cfm (408 m³/h)
- CADR for pollen
The CADR measured with pollen.
- 259 cfm (440 m³/h)
- CADR for fine particles (PM2.5)
The CADR measured for particles under 2.5 microns.
- 236 cfm (401 m³/h)
- Room size we compare on
The room size where the purifier changes the air 4.8 times an hour under a 2.5 m ceiling, worked out from its CADR. We use it so every model is compared on the same rule.
- 352 ft² (33 m²)
- Room size the maker claims
The room size the maker states. Makers use different rules, so we show it but never rank on it.
- 358 ft² (33 m²)
- Air changes the maker assumes
How many times an hour the maker assumes the air is changed when it states a room size.
- 4.8 per hour
Filter 1 fact
- Activated carbon filter
A filter of activated carbon that takes out smells and some gases. It does not catch particles.
- yes
Running costs 1 fact
- Energy use a year
- 237 kWh
Noise and power 5 facts
- Noise at the lowest speed
The sound level at the lowest speed, as the maker measures it.
- 22 dB
- Noise at the highest speed
The sound level at the highest speed, as the maker measures it.
- 52 dB
- Power at the highest speed
The power the purifier draws at its highest speed.
- 38 W
- Energy efficiency (IEF)
Air delivered for each watt, the ENERGY STAR measure. Higher is better.
- 5.8 cfm/W
- ENERGY STAR certified
Certified by ENERGY STAR for the energy it uses to clean the air.
- yes
Air quality sensing 2 facts
- Particle sensor
- Laser
- Automatic mode
The fan speed follows the air quality the sensor reads.
- yes
Smart features and warranty 1 fact
- App control
- Wi-Fi
Build 1 fact
- Weight
What the robot weighs. It counts most if you carry it up a staircase every day.
- 11 lb (5 kg)
Extras 2 facts
- Ioniser
An ioniser charges particles so they settle. Some also make a little ozone, which is why a switch to turn it off matters.
- None
- Ozone produced
The ozone the purifier gives off, in parts per billion. California allows at most 50.
- 0 ppb
Warranty and certification 2 facts
- AHAM Verifide certified
The CADR is verified by AHAM, the US trade body that runs the test.
- yes
- Warranty
The warranty the maker gives in the United States.
- 2 years
Sources: data.energystar.gov · levoit.com · ahamdir.com
Our score
Confidence: medium. One lab and fewer than 300 owners’ ratings. The highest score today is 8.4.
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Lab tests 60%–
Left out, so the other parts count for more.
-
Owners’ ratings 25%–
Owners’ ratings, 25%: none yet at the stores that ship to the United States, so this part is left out and the others count for more.
-
Features 15%8.3
59 of 71 points for the facts the maker states.
- Price never countsA sale can’t lift a model. Today’s lowest price sits beside the score, checked every morning.
- No test, no rankOnly robots a lab has tested are ranked. The rest get a provisional score.
- Reviewers beside, not insideReviewers’ picks are shown next to the score and do not count in it.
Frequently asked questions about the Levoit Core 400S-P
What size of room is the Levoit Core 400S-P for?
The Levoit Core 400S-P is sized for a room of about 352 ft², the room size we compare it on. Its clean air delivery rate (CADR) is 231 cfm, measured to DOE test.
How loud is the Levoit Core 400S-P?
The maker states 22 dB at the lowest speed and 52 dB at the highest.
How much power does the Levoit Core 400S-P use?
It uses about 237 kWh a year on the maker’s test assumptions. At the highest speed it draws 38 W.
Is the Levoit Core 400S-P good for wildfire smoke?
Its CADR for smoke is 231 cfm. A higher number clears smoke from a room faster, so compare it with the size of your room.
The maker
Levoit
- Headquarters: United States
Levoit is a brand of Vesync (US) Corporation, which runs the Levoit website and app alongside the Cosori and Etekcity brands. The company gives its address as Tustin, California.
