Troubleshooting:

What's the difference between OasisMist 1000S and LV600S?

OasisMist 1000S owns 10 Liters capacity, lasts up to 100 hours, and features cool mist.

LV600S owns 6 Liters capacity, lasts up to 100 hours, and features warm and cool mist.

If you need a humidifier with a super-long duration and less refilling, that's it!

Levoit OasisMist 1000S Smart Ultrasonic Cool Mist Tower Humidifier

Note: Distilled/ purified water is preferred for your health.