Levoit - Classic 300S

Levoit Classic 300S Humidifier

It’s designed to handle dry air in spaces up to 47㎡, with a 6L tank that needs refilling just once every 60 hours. The top-fill design simplifies maintenance—no flipping or complicated disassembly. Just pour water straight into the open tank.

You’ll notice the LED display first. It’s responsive to touch, but doesn’t overwhelm with options. Three modes—Auto, Sleep, and Manual—cover most needs. Auto mode uses a built-in sensor to adjust mist levels based on real-time humidity. Some users report a 5-10% fluctuation around set targets, though, so keep that in mind if precision matters.

Quiet operation sits at 30dB, comparable to rustling leaves. Sleep mode dims the display entirely, leaving only a soft nightlight. Pair it with essential oils if you like; the diffuser compartment lets you add a subtle scent without clogging the mist mechanism.

Smart controls via the VeSync app or Alexa voice commands are handy. Adjust settings remotely, check humidity levels, or schedule runtimes. Connectivity requires 2.4GHz Wi-Fi, which might limit older routers.

Maintenance isn’t fussy, but it’s non-negotiable. The clear water tank can develop algae if exposed to sunlight, so regular cleaning with vinegar (included brush helps) is key. A few reviewers mentioned leaks, though this seems sporadic rather than widespread.

By the way, the 26-watt power draw is efficient—about £0.07 per day if run continuously. At 2kg, it’s light enough to move between rooms, though the 34cm height demands some shelf space.

Levoit backs it with a 2-year warranty, and their UK support team responds quickly to issues. While it’s not perfect for hyper-specific humidity control, the balance of smart features, simplicity, and runtime makes it a practical pick for bedrooms or medium-sized living areas.