Introduction
This manual provides detailed instructions for the safe and efficient operation of your BOXING HU-803 6L Warm & Cool Mist Humidifier. Designed for large rooms, bedrooms, and plant care, this humidifier features remote control, auto mode, top-fill design, sleep mode, timer functions, and an essential oil tray, offering up to 60 hours of continuous operation. Please read this manual thoroughly before use and retain it for future reference.
Setup
Before first use, ensure all packaging materials are removed. Place the humidifier on a flat, stable, and water-resistant surface. Ensure it is away from walls, furniture, and electronic devices to allow for proper mist dispersion.
Filling the Water Tank
The BOXING HU-803 features an easy top-fill design. Simply lift the tank cover and pour water directly into the tank. It is recommended to use distilled water or filtered water to minimize white dust accumulation, which is caused by minerals in tap water. Do not fill water over the maximum water line indicated on the tank.


Power Connection
Plug the power cord into a suitable electrical outlet. The unit is now ready for operation.
Operating Instructions
The humidifier can be operated using the touch control panel on the unit or the included remote control.
Power On/Off
Press the power button on the control panel or the remote control to turn the humidifier on or off.
Mist Level Adjustment (Cool/Warm Mist)
The humidifier offers both cool and warm mist options. Press the respective cool mist or warm mist button on the control panel or remote to select your desired mist type. Repeatedly pressing the button will cycle through different mist output levels (low, medium, high).

Auto Mode
Activate Auto Mode by pressing the 'A' button on the control panel or remote. In this mode, the smart sensor continuously monitors and adjusts humidity levels to maintain your ideal setting, typically between 40% and 60% Relative Humidity (RH).

Sleep Mode
Press the Sleep Mode button on the remote control to activate. This mode turns off all LED lights on the display for an undisturbed night. The humidifier continues to operate quietly without light interruptions.

Timer Function
Use the timer button on the remote control to set an operating duration. The timer can be set to match your routine, allowing the humidifier to automatically turn off after a set period.

Essential Oil Tray
For soothing ambiance, locate the essential oil tray at the back of the base. Pull it out, add a few drops of your favorite essential oil to the aroma pad, and then push the tray back into the humidifier. The mist will then carry the aroma into the room.

Official Product Video: How to Operate
Video: An official instructional video from BOXING-Direct demonstrating the operation of the warm and cool mist humidifier, including filling, power, mist settings, and auto mode.
Maintenance
Regular cleaning and maintenance are essential for optimal performance and longevity of your humidifier.
Cleaning the Water Tank
To prevent mineral buildup and ensure clean mist, clean the water tank regularly. The top-fill design and wide opening facilitate easy access for cleaning. Use a soft cloth and mild detergent, then rinse thoroughly.
Avoiding White Dust
White dust is caused by minerals in hard tap water. To minimize this, use distilled or demineralized water. The humidifier includes filters to help reduce mineral content.
Troubleshooting
- No Mist Output: Check if the water tank is properly seated and filled. Ensure the unit is powered on.
- Excessive White Dust: Switch to distilled or demineralized water. Clean the tank and transducer regularly to remove mineral buildup.
- Unusual Odor: Clean the water tank and replace the water. If using essential oils, ensure the aroma pad is clean.
- Unit Not Responding to Remote: Ensure the remote has working batteries. The package includes an extra screw for the remote for battery compartment security.
- Automatic Shut-off: The humidifier features an automatic shut-off when the water level is low. Refill the tank to resume operation.
Specifications
| Feature | Detail |
|---|---|
| Brand | Boxing |
| Model Name | Ultrasonic Warm and Cool Mist Humidifier |
| Item Model Number | HU-803 |
| Capacity | 6 Liters |
| Operation Mode | Ultrasonic |
| Special Features | 6-Liters Capacity, Humidistat, Remote Control, Top-Fill, Timer, Aroma Diffuser, Warm and Cool Mist for Instant and Healthy Relief |
| Color | Transparent Black |
| Floor Area Coverage | 600 Square Feet |
| Product Dimensions | 7.09"D x 8.27"W x 15.12"H |
| Voltage | 120 Volts (AC) |
| Wattage | 27 watts |
| Item Weight | 5.3 pounds |
| Included Components | 1 x 6L Ultrasonic Warm and Cool Mist Humidifier, 3 x Aroma Pads (1 Pre Installed), 3 x Filter (1 Pre Installed), Remote Control |
| BPA-Free Materials | Yes |
Warranty and Support
For warranty information or customer support, please refer to the product packaging or contact BOXING customer service directly. Keep your purchase receipt for any warranty claims.





