Let the Levoit Core 300S read the air and adjust itself, room by room

It has a built-in PM2.5 laser sensor that reads air quality in real time and shows the result on the unit's display and in the VeSync app, plus Auto Mode, which uses that reading to adjust fan speed on its own rather than needing you to set it manually.

The laser sensor continuously measures airborne particulate, and the unit's fan speed steps up or down automatically based on what it detects. Air quality drops, the fan works harder, air quality improves, it eases off. You do not need to intervene once it is set to Auto.

With a CADR of 258m³/h, Levoit states it covers up to 108m² once an hour, or 54m² twice an hour, which puts it comfortably in range for a large bedroom, a living room or an open-plan space.

No, the unit can be operated and set to Auto Mode directly on the machine. The app adds the ability to monitor air quality remotely and adjust settings from your phone, but it is not required for day-to-day use.

Three-stage HEPA filtration is rated to capture pollen, dust, pet dander, mould spores and smoke particles down to 0.3 microns, which covers most common household air quality triggers.

The HEPA filtration and real-time sensor are aimed at reducing airborne pollen and irritants during hay fever season, adjusting automatically as pollen levels change through the day. It is a way to cut exposure indoors, not a medical treatment.

Four: Original, Pet Allergy, Toxin Absorber and Mould, so you can match the cartridge to whichever issue is the priority in your home.

Yes, the HEPA filtration is rated to capture pet dander down to 0.3 microns, and there is a dedicated Pet Allergy filter variant if that is your main concern.

Its coverage rating of up to 108m² and 360° air circulation make it a reasonable fit for open-plan living spaces, larger than a typical single bedroom would need.

A specific noise level in decibels is not stated in our product record for this model, so we do not want to quote a figure we cannot confirm. Auto Mode should generally keep fan speed, and therefore noise, lower when air quality is already good.

Levoit notes that running the fan at high speed can improve general airflow and add a cooling effect in summer, though it is an air purifier first rather than a dedicated fan or air conditioner.

No. Wi-Fi and the app are only needed if you want remote monitoring and control. The purifier, sensor and Auto Mode all work locally on the unit without an internet connection.

Filter status can be checked in the VeSync app, and the unit is designed to prompt you when a replacement is due, so you are not left guessing.

Open floor space with clear airflow on all sides suits the 360° circulation design best, ideally central to the room or space you want it to cover.

The Core 300S uses HEPA filtration and a laser sensor rather than UV-C light or ionisers, in line with the rest of the Levoit Core range.

Scheduling and timer options are available through the unit and the VeSync app; specific timer durations for this model are not listed in our product record, so we have not stated a figure we cannot confirm.

A dedicated dimmed sleep display setting is not specifically confirmed for this model in our record, so we would rather leave that unstated than guess. If display brightness at night is important to you, our Core 300 model confirms a dimmed sleep mode.

No, the Core 300S covers more. It is rated at 108m² with a CADR of 258m³/h, compared with the standard Core 300's 80m² and 187m³/h, in exchange for the added laser sensor and Auto Mode.

Yes, we deliver this item. Your delivery estimate and any options are shown at checkout before you pay, so you can see the timing for your address first.

Any delivery charge is worked out at checkout based on your address and shown before you confirm the order. There are no hidden fees added after payment.

Yes. If it is not right for your room, you can return it in line with our returns policy. Keep the packaging where possible, it makes the process tidier and safer.

It suits anyone who wants their air purifier to run itself, useful for a busy household, a first smart-home gadget, or a gift for someone managing allergies who would rather not fiddle with settings.

Get in touch and we will sort it out. Whether it is a fault, a missing part or the wrong fit for your space, we would rather put it right than leave you with something you will not use.

The HEPA filter is rated to capture smoke particles as part of its filtration claim, which can help with lingering smoke, though it filters particles rather than chemically neutralising odours.

Colour is not confirmed in our product record for this listing, so we have left it unstated rather than guess.

Weight is not specified in our product record, so we would rather leave it blank than invent a figure.

The VeSync app is designed for straightforward pairing with Levoit's smart devices; exact setup steps are not detailed in our product record, so we cannot describe them here beyond confirming app control is supported.

Yes, it is designed for continuous operation, and Auto Mode is intended to make that practical by only working the fan as hard as current air quality requires.

The stated sensor is a PM2.5 laser sensor, tracking particulate matter. Our product record does not confirm separate VOC or gas detection, so we have not claimed that capability.

The 300S covers a larger room (108m² vs 80m²), adds a real-time PM2.5 sensor, Auto Mode and app control. If you want the unit to monitor and adjust itself, or you have a bigger space to cover, the 300S is the better fit; if you just want manual HEPA filtration at a lower price, the standard Core 300 does that job.