
Levoit Core 400S-P
AHAM verified
- Really cleans
- 356 sq ft33 m² 33 m²356 sq ft
- Box says
- 1,718 sq ft160 m² 4.8× overstated
- New filter
- 6–12 months
Levoit · LAP-V201S-WUS
381 sq ft35 m² 35 m²381 sq ft
At 4.8 air changes an hour with a 2.5 m ceiling
A wide, flat smart tower with a verified CADR, an air quality sensor and an app. Cleans a large living room.

A flatter alternative to the round purifiers for a large living room. AHAM has verified its CADR, it has auto mode and app control, and the flat shape stands close to a wall.
Levoit Vital 200S-P · LAP-V201S-WUS
Certified: measured in an independent lab for AHAM’s Verifide programme. Maker’s claim: the manufacturer’s own figure, not independently checked. Where figures come from
A new filter every 6–12 months means 1–2 filters a year. At top speed it draws 50 W: 1.2 kWh if it ran flat out all day. Slower settings use less.
Levoit Vital 200S-P Replacement Filter on Amazon: Levoit Vital 200S-P Replacement Filter Paid link
Source: Maker’s claim, Levoit, checked 1 Nov 2026
To clean 1,862 sq ft173 m² it would only change the air in the room 1 time an hour. We size every purifier at 4.8 air changes an hour, the level AHAM's room-size guideline works out to.
Levoit's figure is the room it can change the air of once an hour, and the wording says as much. That's a real number, but at one air change an hour smoke and pollen come back in nearly as fast as the purifier removes them.
425 m³/h smoke CADR ÷ (4.8 × 2.5 m ceiling) = 35.4 m² = 381 sq ft35.4 m²
Use the calculator for your exact room and ceiling, or read how we pick.
Drawn to scale: the box says “Changes the air in a 1862 ft2 room once per hour”, the purifier really cleans 381 sq ft, 4.9 times less.Drawn to scale: the box says “Changes the air in a 1862 ft2 room once per hour”, the purifier really cleans 35 m², 4.9 times less.
It suits 215 sq ft20 m² and 269 sq ft25 m² rooms best: there it has 40–75% more air than the room needs, so it needn't run flat out. At 376 sq ft35 m² it only just keeps up (no air to spare), so it would run near its top speed, usually its loudest (why we don’t list noise). In rooms of 161 sq ft15 m² or less it's more than twice the size needed; a smaller model does the job.
Under a 2.7 m ceiling it covers 352 sq ft, under 3 m 317 sq ftUnder a 2.7 m ceiling it covers 32 m², under 3 m 29 m², so with a 3 m ceiling it no longer covers 322 sq ft30 m² or 376 sq ft35 m² (why).
For a 430 sq ft room or bigger it's too small, although the box claims 1,862 sq ft: the For a 40 m² room or bigger it's too small, although the box claims 173 m²: the 430 sq ft40 m² page lists models that cover it.
The certified models closest in size, and what is different about each, from the same kinds of source.

AHAM verified
Cleans 356 sq ft, 25 sq ft lessCleans 33 m², 2 m² less. It draws 38 W at top speed. 1 kg lighter.

AHAM verified
Cleans 385 sq ft, 4 sq ft moreCleans the same 35 m². It has an ionizer you can switch off. It goes longer between filters (every 12 months) and draws 65 W at top speed. 6.1 cm taller.

AHAM verified
Cleans 411 sq ft, 30 sq ft moreCleans 38 m², 3 m² more. It has an ionizer you can switch off. It goes longer between filters (every 12 months). 1.4 kg lighter.
We don't test purifiers ourselves: every figure on this page is copied from these sources and was last checked on 1 Nov 2026. Spotted one that's wrong or out of date? Tell us and we'll fix it and change the date.