Experience uninterrupted tranquility with our brand new Classic 160 Top Fill Humidifier. Indulge in a blissful nights sleep, knowing that it is diligently moisturizing the air for you and your little one! Featured with BPA-Free material and Auto Shut-off when the water level in the base is low, there is no need to worry about safety issues.Troubleshooting:1. Do I need to use distilled water?Yes, we recommend using purified or distilled water to minimize white dust as much as possible.2. How should I clean the water tank?Please watch the cleaning video in the listing before cleaning the humidifier and follow the steps shown in the video.3. Should I place the humidifier on a table for use?We recommend placing the humidifier at a higher position and using it in a more open space to achieve the best possible humidification effect.4. I noticed that the pre-installed filter cotton inside the humidifier got dirty after some time. What should I do?Generally, it lasts about one month, depending on the hardness of the water. You can purchase a replacement on Amazon when the filter cotton becomes dirty. Please search for B09ZY9N6PD or LEVOIT 10-Pack Humidifier Replacement Filters on Amazon.5. Why doesnt the humidifier turn off immediately when the water tank is empty?The float in the base controls the auto shut-off function to stop the machine. There may be a slight delay in the shut-off time, but there is no safety concern. Additionally, a red light will indicate when the machine turns off due to a low water level.Features:v Large Water Tank of 2.5Lv Operation that Lasts Up to 25 Hours When Used at the Lowest Levelv Easy Top-Fill Design v Easy to Clean with Big Opening and Base without Nooksv Ultra-Quiet Operationv 360 Rotating Nozzlev Auto Shut-Off (Controlled by the float to stop the machine, there will be some delay in the stopping time), and there will be a red light when the machine is off due to the low water level. v BPA-Free for Safety and Reliabilityv Comes with Cleaning Brush Your satisfaction with our products is the teams priority.If you find the product damaged or used when you receive it, please dont hesitate to contact us.Specifications:Product Dimensions: 7.16.4 10.2 in / 18.116.225.8 cmProduct Weight: 2.16 lb / 0.98 kgWhisper-Quiet Operation: 26-28dBEffective Range: 219 ft / 20 mMaterial: BPA free, suitable for babies and adultsFuel Your Classic160 with Levoit Humidifier Replacement Filters Levoit Humidifier Replacement Filters/ Levoit Water Filter SpongeWhy to use:Capture and filter fine impurities and particles to improve humidifying efficiency more healthily.When to change: Generally lasts 1 month depending on the hardness of water.Where to buy: Please search B09ZY9N6PD or LEVOIT 10-Pack Humidifier Replacement Filters on Amazon.