LEVOIT 6L Top-Fill Cool Mist Humidifier: features, specs and what to check

The LEVOIT 6L Top-Fill Cool Mist Humidifier is a large-room humidifier with a 6-litre tank that fills from the top, an essential oil tray and an Auto mode that follows the humidity in the room. Its listing also describes a HEPA air purifier, so the title covers two products in one listing. Here is what the humidifier's features mean and what to check.

Cool mist and the 6L tank

Cool mist humidifiers add moisture to the air without heating the water. LEVOIT says the 6L tank runs for up to 60 hours and covers up to 505 square feet. Both numbers depend on the setting: runtime is longest at low output, and room coverage assumes an ordinary, closed room. Top filling means you lift the lid and pour water in, so you don't have to carry or flip the tank.

Auto mode and sensors

In Auto mode, sensors read the humidity and adjust output to maintain a steady level. LEVOIT presents this as a way to avoid constant fiddling with the controls. In general, indoor humidity somewhere in the middle range is a common comfort target, and a separate hygrometer is a handy way to check your room. The brand also says the unit is quiet, with noise of 30dB or less.

Modes through the day

LEVOIT outlines several uses: aromatherapy in the morning, Auto mode in the afternoon, Plant Mode in the evening and Sleep Mode at night. Sleep mode usually lowers output and dims display lights. The essential oil tray lets you add a scent. Use only products the manual allows, since some oils can damage plastics or clog parts.

App control

The app lets you control the humidifier remotely, set schedules and adjust settings. A phone and a home Wi-Fi network are needed for this.

The air purifier in the listing

The listing also describes an air purifier, shown as "Product 2". LEVOIT says it uses 3-stage HEPA filtration to trap dust, pet dander and pollen, and that it avoids UV-C light so it is ozone free. It has three fan speeds, with 25dB on low, and uses genuine replacement filters (the listing gives B06XD7X81D as the replacement filter search code). Check which items are included in the version you choose, since the listing mixes the two descriptions.

Keeping a humidifier clean

Any humidifier needs regular cleaning, because standing water can grow mould and bacteria. Typically that means emptying and rinsing the tank often, descaling as the manual advises, and using clean water. Hard water can leave white deposits, so check whether the manual recommends distilled or filtered water.

Who it suits

It suits larger bedrooms and living rooms, people who want a lengthy run between fills, and anyone who likes app control or an adjustable mist level.

What to check before you buy

• Room size: compare your room with the stated 505 sq ft coverage.
• Water type: check the manual on tap, filtered or distilled water.
• Placement: put it on a level, water-resistant surface away from walls, electronics and bedding.
• Cleaning: look at how easy the tank opens and what parts need washing.
• Filters: for the purifier, confirm the filter type and how replacements are obtained.
• Oils: only use essential oils in the tray if the manual allows them.

The short version

• A 6L top-fill cool mist humidifier with up to 60 hours of runtime.
• Rated by LEVOIT for rooms up to 505 square feet.
• Auto, Plant and Sleep modes, essential oil tray and app control.
• Noise stated at 30dB or less.
• The listing also describes a HEPA air purifier, so check what's included.

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