Introduction
Thank you for choosing the MEGAWISE Ultrasonic Cool Mist Humidifier. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new humidifier. Please read it thoroughly before use and retain it for future reference.
Important Safeguards
To reduce the risk of fire, electric shock, or injury, please follow these instructions:
- Always unplug the humidifier before cleaning, filling, or moving it.
- Do not overfill the water tank. Ensure water level is below the MAX line.
- Use only clean, cool tap water or distilled water. Do not use hot water.
- Keep the humidifier on a firm, flat, and waterproof surface at least 12 inches (30 cm) away from walls and appliances.
- Do not place the humidifier directly on carpet, towels, or other absorbent surfaces.
- Keep out of reach of children and pets.
- Do not add essential oils directly into the water tank. Use the designated aromatherapy tray.
- Do not block the mist outlet.
- If the unit is damaged, do not operate it. Contact customer support.
Package Contents
- MEGAWISE Ultrasonic Cool Mist Humidifier (Model HHHD0005)
- User Manual
Specifications
| Brand | MEGAWISE |
| Model Name | HHHD0005 |
| Capacity | 3.5 Liters (0.5 Gallons) |
| Product Dimensions | 7.02"D x 9.75"W x 7.02"H |
| Item Weight | 1.48 pounds (0.67 Kilograms) |
| Floor Area Coverage | Up to 500 Square Feet |
| Special Feature | Adjustable Humidity Control, 7-Color Night Light, Aromatherapy Tray, Auto Shut-Off |
| Noise Level | 24dB (Ultra-Quiet) |
Setup
- Unpack: Carefully remove the humidifier and all accessories from the packaging.
- Placement: Place the humidifier on a flat, stable, and water-resistant surface. Ensure it is away from direct sunlight, heat sources, and electronic devices.
- Fill Water Tank: Remove the top cover. Fill the water tank with clean, cool tap water or distilled water. Do not exceed the maximum fill line indicated inside the tank.

For a visual guide on unboxing and initial setup, please watch the video below:
- Replace Cover: Place the top cover back onto the water tank securely.
- Plug In: Plug the power cord into a suitable electrical outlet. The humidifier is now ready for operation.
Operating Instructions
- Power On/Off: Rotate the dial knob clockwise to turn on the humidifier. Continue rotating to adjust the mist output. Rotate counter-clockwise to turn off.
- Adjust Mist Output: The dial knob allows for stepless adjustment of mist intensity from minimum to maximum.

- 360° Rotatable Nozzle: The mist outlet nozzle can be rotated 360 degrees to direct the mist in any desired direction.
- Night Light Function: Press the 'Light' button to cycle through 7 different LED colors or select a single color to create a soothing ambiance. Press again to turn off the light.

- Aromatherapy: Locate the essential oil tray at the base of the humidifier. Add a few drops of your favorite essential oil onto the aroma pad. Do not add essential oils directly into the water tank.

See the humidifier in action with its various features:
Maintenance
Regular cleaning is crucial for optimal performance and hygiene. The top-fill design and simple base make cleaning easy.
- Daily Cleaning: Empty any remaining water from the tank and base. Wipe down the inside of the tank and base with a soft, damp cloth.
- Weekly Cleaning: For thorough cleaning, remove the top cover and the mist tube. Fill the tank with a mixture of equal parts white vinegar and water. Let it soak for 30 minutes, then scrub with a soft brush or cloth. Rinse thoroughly with clean water.
- Base Cleaning: Clean the nebulizer and the area around it in the base with a soft brush or cotton swab. Do not immerse the base in water.
- Aroma Pad: Replace the aroma pad in the essential oil tray regularly or when changing essential oil scents.

Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist or low mist output | Lack of water in tank; mineral buildup on nebulizer; mist outlet blocked. | Refill water tank; clean the nebulizer and base; ensure mist outlet is clear. |
| Unusual odor | Dirty water or tank; new unit smell. | Clean the water tank and replace with fresh water; run the unit in a well-ventilated area for a few days. |
| Water leakage | Tank not properly seated; overfilled tank; damaged tank. | Ensure tank is correctly placed; do not overfill; contact support if damaged. |
| Humidifier not turning on | Not plugged in; no power; water tank empty. | Check power connection; ensure outlet is working; refill water tank. |
Warranty and Support
MEGAWISE is committed to your satisfaction. For any questions regarding setup, maintenance, or operation of your humidifier, our friendly support team is available 24/7 via live chat or phone. Please refer to your product packaging or the official MEGAWISE website for specific warranty details and contact information.

