Portable USB Cooling Fan & Spray Humidifier – 380ml Tank

Stay Cool & Comfortable Anywhere with This Portable USB Cooling Fan

Beat the heat without bulky equipment. The LZHZXY WT-F11 Portable USB Evaporative Cooling Fan combines a whisper-quiet desk fan with a built-in spray humidifier to deliver a refreshing cool mist right where you need it — at your desk, bedside, or workspace. Compact enough to sit on any table, powerful enough to make a real difference on hot, dry days.

Made in Mainland China.

Key Features

• 380ml Water Tank — Generous capacity for extended use without constant refilling
• 3-Speed Fan Control — Mechanical speed selector lets you choose gentle breeze or full cool airflow
• Spray Humidification — Fine mist nozzle adds moisture to dry air while cooling, keeping skin and sinuses comfortable
• USB Powered (DC 5V) — Plug into any USB port, power bank, or 2A USB adapter; low energy draw of just 1W–7W
• ABS + Silicone Construction — Durable, lightweight body that's easy to wipe clean
• Compact Desktop Design — Tabletop footprint that fits neatly on desks, nightstands, or countertops
• Works Best in Dry Conditions — Ideal when ambient temperature is above 25°C; adding ice water to the tank boosts the cooling effect

Specifications

Usage Tips for Best Results

1. First-time use: Fill with water and let it stand for 20 minutes so the internal water curtain is fully saturated before switching on.
2. Power source for Speed 3: Speed 3 requires at least 1.5A output. Use a 2A USB adapter or a USB 3.0 port on your computer to unlock maximum airflow.
3. Keep it upright: Always use and store the fan in an upright position to prevent water from reaching the circuit board.
4. Adding ice water: For extra cooling on very hot days, fill the tank with cold or ice water to enhance the mist's cooling effect.
5. Moving the unit: Open the drain outlet at the base and empty the tank before relocating the fan to avoid leaks.

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Learn More About Indoor Air Quality

Maintaining comfortable indoor humidity levels can improve overall well-being. For guidance on healthy indoor environments, visit the U.S. Environmental Protection Agency – Indoor Air Quality resource page.

Frequently Asked Questions

Q: How does the USB evaporative cooling fan work?

A: The fan draws warm room air through a water-saturated curtain inside the 380ml tank. As the air passes through, evaporation lowers the air temperature and adds a fine mist, delivering cooler, slightly humidified airflow directly toward you. It works best in warm (above 25°C) and low-humidity environments.

Q: What USB power source do I need for all 3 fan speeds?

A: Speeds 1 and 2 work with standard USB ports (0.5A–1A). To activate Speed 3 (maximum airflow), you need a power source capable of at least 1.5A — a 2A USB wall adapter or a USB 3.0 computer port is recommended.

Q: Can I use ice water in the tank for extra cooling?

A: Yes! Filling the 380ml tank with cold or ice water is a great way to boost the cooling effect, especially when ambient temperatures or humidity levels are high. Just be sure to keep the unit upright at all times.

Q: Is this fan suitable for cooling an entire room?

A: This portable cooling fan is designed for personal use, providing targeted cool airflow within approximately 40 cm. It is ideal for one person at a desk or bedside and is not intended to replace room air conditioning.

Q: How do I clean and maintain the fan?

A: Drain the water tank completely before cleaning. Wipe the exterior with a damp cloth. Periodically rinse the water tank to prevent mineral buildup, especially if you use tap water regularly. Allow all parts to dry before refilling.