HAOYUNMA Portable Evaporative Air Cooler Fan | 3-Speed, 3–5L

Stay Cool Anywhere with the HAOYUNMA Portable Evaporative Air Cooler

Beat the summer heat without the bulk or installation hassle of a traditional air conditioner. The HAOYUNMA KF-LY21J is a compact, mobile evaporative water-cooling fan that circulates refreshingly cool, humidified air throughout your room. Simply fill the 3–5 litre water tank, select your preferred fan speed, and enjoy energy-efficient cooling wherever you need it most — bedroom, living room, home office, or workshop.

Featuring a built-in negative ion generator, this air cooler doesn't just cool the air — it also helps freshen it, making your space feel more comfortable during warm months. The whisper-friendly Sleep Mode and three selectable fan speeds give you complete control over your environment day and night.

Key Features

• Evaporative Water Cooling: Uses water refrigeration technology to deliver cool, moist airflow without traditional compressor noise or high energy draw.
• 3–5 Litre Water Tank: Generous capacity for extended run time between refills.
• 3 Fan Speed Settings: 1st, 2nd, and 3rd gear — choose the airflow intensity that suits you.
• Sleep Mode: Reduces fan speed and noise automatically for undisturbed rest.
• Negative Ion Function: Helps freshen ambient air for a cleaner, more comfortable feel.
• Fully Mobile & Portable: Compact, lightweight design moves easily from room to room.
• Plug-In AC Power (220V): Straightforward plug-and-play setup — no installation required.
• Model: KF-LY21J | Voltage: 220V AC

Specifications

Why Choose an Evaporative Air Cooler?

Evaporative coolers use the natural process of water evaporation to lower air temperature, consuming significantly less energy than conventional compressor-based air conditioners. They work best in dry or moderately humid environments and are ideal for spot-cooling a single room or personal workspace. Learn more about energy-efficient home cooling at energy.gov – Fans for Cooling.

Explore More Home Comfort Solutions

• 1.4W Solar Fountain Pump – Garden & Pond
• 1.8W Solar Fountain Pump – 6 Nozzles, IPX8 Bird Bath & Garden

Learn more: The Dark Tower (series)

Frequently Asked Questions

Q: How does the HAOYUNMA evaporative air cooler work?

A: The KF-LY21J draws warm room air through a water-saturated cooling pad inside the unit. As air passes through, water evaporates and lowers the air temperature before blowing it back into the room. The negative ion generator simultaneously helps freshen the circulating air. Simply fill the 3–5L water tank and switch on your preferred fan speed — no refrigerant or complex installation needed.

Q: What size room is this portable air cooler suitable for?

A: This unit is designed for personal and small-to-medium room cooling — ideal for bedrooms, home offices, or study rooms. For best results, use it in a well-ventilated space with low to moderate humidity levels, as evaporative cooling is most effective in drier climates.

Q: Can I use ice in the water tank to make the air cooler colder?

A: Yes — adding ice cubes to the water tank can enhance the cooling effect, delivering an even more refreshing airflow. This is a popular way to boost performance on particularly warm days.

Q: Is this air cooler noisy?

A: The HAOYUNMA KF-LY21J features a Sleep Mode that reduces fan speed and minimises noise output for use at night. On lower speed settings (1st gear), the unit operates quietly enough for bedroom use.

Q: What voltage does this air cooler require?

A: This model operates on 220V AC power via a standard plug-in connection. Please ensure your home outlet matches this voltage before use.