Cool Mist Humidifier, 4L Intelligent Top Fill Ultrasonic Humidifier with Essential Oil Tray
Review: 5 - "A masterpiece of literature" by , written on May 4, 20020

Cool Mist Humidifier, 4L Intelligent Top Fill Ultrasonic Humidifier with Essential Oil Tray

Available:In Stock


    • Top-Fill Design: Refill water or clean the interior from the top
    • 4L Capacity: Large 4L capacity tank brings you moisturized, fresh air uninterrupted for an entire day – without needing frequent refills
    • Automatic Humidification: Intelligently sprays cool mist to keep the room humidity between the ideal rate of 60%-65%
    • 3 Mist Settings: Customize the mist output to best fit your space and your humidity needs
    • Sleep Peacefully: Operates quietly at 28dB, together with an adjustable night light and LED screen that won’t disturb your sleep
    • Essential-Oil Friendly: Drop some essential oil into the tray to add fragrance immediately into your space
    • Safety: Features multiple protections which increase the humidifier’s service life and reliability
    • Memory Function: Remembers and uses your previous settings when you next turn it on




    • Double-layer protection can effectively solve the problem of water leakage, but it needs to be cleaned regularly to ensure that the water tank and sealing ring do not have impurities.(Please take out the protective foam of the base before use to prevent water leakage)
    • An open or fast air convection environment will affect the humidity display (such as a room with windows for ventilation, a bedroom with an air conditioner or fan, or a living room with a fireplace, etc.)


    Technical Specifications:


    • Operating Voltage: 100-120V 50 / 60Hz
    • Rated Power: 20W
    • Water Tank Capacity: 4L / 1.06Gal
    • Mist Output: 300 ml/h (High) 200 ml/h (Medium) 100 ml/h (Low)
    • Working Time on a Full Tank: 14-30h
    • Recommended Room Size: 10-30 m²/107-322 ft²
    • Noise: 28dB

    Shipping Status

    Last updated October 22, 2020.
    Delivery times may be longer than usual due to the COVID-19 pandemic across the globe. We will arrange shipment as soon as the delivery industry gets back to normal.
    Do not use delivery addresses for buildings that may be closed due to the current provisions (e.g. schools).
    For any questions, please contact our customer service via the pop-up window on the page.


    Shipping Fee
    Free shipping.



    Shipping Orders

    Normally orders will ship within 2-7 business days of processing payment, unless particularly noted else where on the website, at the time order is placed, or you receive an email notice that an item in your order has been delayed. Any expected delivery dates that may be given are only estimates. Orders can be delayed due to verification or the time the order has been placed.  Orders may be delivered in separate shipments.  All purchases through are made pursuant to a shipment contract. This means that the risk of loss and title for such items pass to you upon tender of the item to the carrier.


    Delivery Address

    A complete and correct delivery address is essential. Once your order has been prepared for shipment or has shipped, we are unable to change the shipping address. If a package is returned to us due to an incorrect or incomplete address provided by you (the customer) or your agent, we will contact you immediately for a correction, and the package will be re-shipped at an additional shipping fee. You must include a daytime telephone number for all orders. Occasionally packages are returned to Boltune as undeliverable. When the carrier returns an undeliverable package to Boltune, please contact Boltune to make arrangements for reshipment.

    The 10 continental U.S. states will not serve at this time (Last updated Nov 25, 2020. ):

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    Shipping Hubs

    Orders for The United States:
    Most orders will be processed by Amazon, and shipped directly from Amazon distribution center in California. 
    Orders for The United Kingdom:

    When you place an order on the Boltune website, you will receive a shipping info email from Amazon. Please check your email address. In addition, you can also check the shipping info through track order.

    Standard Shipping

    Products shipped via standard service are normally delivered within 3-5 business days after receiving the order.