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Levoit Core 300-P vs Core 400S-P (2027)

The two Levoit staples compared: Core 300-P against Core 400S-P on room size, smart control, CADR, and price, for 2027 buyers.

TGBy TrueGear Research TeamIndependent editorial teamLast updated How we researchResearch-based assessment · Air Purifiers
Specs verified against manufacturer docs
No paid placements
Independently funded by readers
Updated 2026-10-31
Levoit Core 300-P vs Core 400S-P (2027) featured graphic
Levoit Core 300-P Air Purifier

Levoit Core 300-P Air Purifier

The bedroom classic: a compact cylinder with AHAM VERIFIDE CADR ratings, a 3-in-1 filter, and a sleep mode quiet enough to run all night.

  • Coverage: Up to 1,073 sq ft in one hour, per retailer listing
  • CADR: 143 CFM smoke, 153 CFM dust, 167 CFM pollen, AHAM VERIFIDE ratings
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Levoit Core 400S-P Smart Air Purifier

Levoit Core 400S-P Smart Air Purifier

The smart step up from the bedroom Levoits: AHAM VERIFIDE ratings, an air quality monitor, auto mode, and VeSync app control for large rooms.

  • Coverage: Up to 1,733 sq ft in one hour, per retailer listing
  • Room at 4.8 changes: 358 sq ft at 4.8 air changes per hour, per maker rating
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What owners report

Most praised
  • Bedroom owners praise how quickly cooking smells and dust fade after the purifier runs in a closed room.
  • The simple top dial is praised by buyers who wanted clean air without an app account or a Wi-Fi setup step.
  • Night use gets praise for a low hum that fades into the background once the bedroom door closes.
Common complaints
  • Buyers with open living areas complain the purifier feels underpowered once the room passes bedroom size.
  • Manual speed changes annoy owners who expected an auto mode to react to cooking smoke on its own.
  • Filter prices surprise first-time buyers who compared only the machine price before ordering.

What owners report

Most praised
  • Auto mode earns praise from owners who watch the fan step up during cooking and settle back down afterwards.
  • App scheduling is praised by households that set a quiet night speed and a stronger daytime clean without thinking about it.
  • Large-bedroom owners praise the tower for clearing overnight stuffiness before the alarm goes off.
Common complaints
  • App pairing frustrates some buyers, especially where the home network hides the 2.4GHz band the purifier needs.
  • Tower height surprises buyers who pictured a nightstand machine and found a floor-standing unit instead.
  • Filter cost over a year disappoints owners who budgeted for the machine price and not the consumable that follows it.

Our recommendation

This is the purest comparison in the guide, because both machines share the Levoit filter family and the same HEPA sleep-mode idea. The only questions are room size and smart control. Take the Core 300-P if the room is a bedroom and you want a simple dial machine at a budget price. Take the Core 400S-P if the room is a living room or a large bedroom and you want auto mode, an air quality monitor, and app control. The 400S-P costs more and filters cost more, but it covers the room the 300-P cannot.

Room size and CADR

The Core 300-P is AHAM VERIFIDE rated at 143 CFM for smoke, 153 CFM for dust, and 167 CFM for pollen, and it covers up to 1,073 sq ft in one hour. The Core 400S-P is rated at 231, 240, and 259 CFM on the same measures, and it covers up to 1,733 sq ft in one hour, with 358 sq ft at 4.8 air changes per hour. The gap is a bedroom against a living room, not a marginal upgrade.

Control: dial against smart

The Core 300-P uses a top dial and manual speeds, with no auto mode and no app. The Core 400S-P uses an air quality monitor with auto mode, VeSync app control, and voice control. Buyers who want the machine to react to cooking smoke need the 400S-P; buyers who want a dial they can use in the dark need the 300-P.

Size, weight, and filter cost

The Core 300-P is a compact 8.7 inch cylinder at 7.9 pounds, while the Core 400S-P is a taller tower at 12.79 pounds. Filter costs follow size: the 400S-P filter costs more per change, and its 6 to 8 month interval still applies. Budget the tower and its filter together before choosing on machine price alone.

Choose Levoit Core 300-P Air Purifier if…

  • Your room is a bedroom, nursery, or home office
  • You want the lowest machine price and the simplest controls
  • You prefer a dial to an app and a voice assistant
  • You want the smallest footprint in this guide

Choose Levoit Core 400S-P Smart Air Purifier if…

  • Your room is a living room or a large bedroom
  • You want auto mode driven by an air quality monitor
  • You use app schedules or voice routines already
  • You need a tested large-room CADR rating

Questions, answered

Can I use Core 300-P filters in the Core 400S-P?

No. Each model takes its own filter size, and the filter versions differ by model. Order by the exact model name to avoid a filter that does not fit.

Is the Core 400S-P worth the premium over the Core 300-P?

If the room is a living room or a large bedroom, yes: the 300-P cannot cover that room properly, so the premium buys a room that actually gets clean. If the room is a bedroom, no: the 300-P covers it for less money with simpler controls.

Which is quieter at night?

Both are bedroom-quiet at sleep speed: the Core 300-P at 24 decibels, and the Core 400S-P at a low auto speed that settles once the air is clean. The 300-P is simpler to set for the night, since it has no auto mode to surge.

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