1. Introduction
The LittleHippo WISPI is a versatile 3-in-1 device designed to enhance the comfort and ambiance of your space. It functions as a humidifier, an essential oil diffuser, and a night light. This manual provides detailed instructions for the safe and effective use of your WISPI unit.

Image: The LittleHippo WISPI unit, highlighting its 3-in-1 functionality as a humidifier, diffuser, and night light.
Product Video Overview
Video: An official overview of the LittleHippo WISPI, demonstrating its features as a 3-in-1 children's humidifier, diffuser, and night light.
2. Important Safety Instructions
Please read and save these safety instructions before using the WISPI unit. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Always place the humidifier on a firm, flat, waterproof surface at least 12 inches (30 cm) away from walls and appliances.
- Do not operate the humidifier without water in the tank.
- Do not use hot water. Use cool tap water or distilled water.
- Do not add essential oils directly into the water tank. Use only the designated essential oil tray.
- Keep the unit out of reach of children and pets.
- Unplug the unit before filling, cleaning, or moving.
- Do not block the mist outlet or air intake vents.
- If the unit is damaged, do not operate it. Contact customer support.
- Avoid placing the unit near heat sources or in direct sunlight.
3. Package Contents & Product Components
3.1 Package Contents
Verify that all items are included in your package:
- LittleHippo WISPI Unit
- Power Adapter
- 3 Essential Oil Pads
- Optional Demineralization Filter
- User Manual (this document)
3.2 Product Components
Familiarize yourself with the main parts of your WISPI unit:
- Water Tank: Holds up to 1.6 liters of water.
- Base Unit: Contains the ultrasonic transducer and control electronics.
- Mist Nozzles: Located on top of the unit, for mist output.
- Control Panel: Touch-sensitive buttons for power, mist, and light settings, with an LED display.
- Essential Oil Tray: A small compartment for adding essential oils to the included pads.
- Demineralization Filter: Helps reduce white dust from hard water.
4. Setup Guide
Follow these steps for initial setup:
- Placement: Place the WISPI on a flat, stable, and waterproof surface. Ensure it is not directly on carpet or near sensitive electronics.
- Fill Water Tank: Remove the top cover of the unit. Fill the water tank with cool, clean tap water or distilled water. Do not exceed the maximum fill line. Replace the top cover securely.

Image: A hand filling the transparent water tank of the WISPI humidifier.
- Install Demineralization Filter (Optional): If your water is hard, insert the demineralization filter into its designated slot in the base unit. This helps prevent white dust.

Image: A hand placing the demineralization filter into the base of the humidifier.
- Connect Power: Plug the power adapter into the unit and then into a standard electrical outlet. The unit will emit a beep, and the display will briefly illuminate.
5. Operating Instructions
5.1 Power On/Off
Press the Power button (
) once to turn the unit on. Press it again to turn off. The unit will start in the last used mist setting.
5.2 Mist Control
The WISPI offers three mist intensity levels. Press the Mist button (
) repeatedly to cycle through Low, Medium, and High mist settings. The current setting will be displayed on the LED screen.

Image: The WISPI humidifier demonstrating its auto mist technology, which automatically adjusts mist output to maintain desired humidity levels.
5.3 Night Light Control
Press the Light button (
) to activate the night light. Repeatedly press to cycle through 7 different LED colors and a color-changing mode. Press and hold to turn the night light off.
5.4 Humidistat / Auto Mode
The WISPI features a built-in humidistat to monitor room humidity. To set a desired humidity level, press the Humidity button (
). The unit will automatically adjust its mist output to maintain the set humidity. The auto-shutoff feature activates when the tank runs dry or the desired humidity is reached.

Image: Close-up of the WISPI's LED display showing the current humidity level at 40%.
5.5 Aromatherapy Diffuser
To use the aromatherapy function:
- Locate the essential oil tray on the side of the unit.
- Pull out the tray and place one of the included essential oil pads inside.
- Add a few drops of your preferred essential oil onto the pad.
- Slide the tray back into the unit. The mist will now carry the aroma into the air.

Image: A hand adding drops of essential oil onto a pad in the pull-out diffuser tray.
6. Maintenance & Cleaning
Regular cleaning ensures optimal performance and extends the lifespan of your WISPI unit.
6.1 Daily Maintenance
- Empty and rinse the water tank daily.
- Wipe the inside of the water tank and base with a clean, dry cloth.
6.2 Weekly Cleaning
- Unplug the unit and remove the water tank.
- Pour 1 cup of white vinegar into the water tank and base. Let it sit for 20 minutes.
- Use a soft brush or cloth to clean any mineral buildup.
- Rinse thoroughly with clean water until the vinegar smell is gone.
- Do not submerge the base unit in water.
6.3 Demineralization Filter Replacement
The demineralization filter should be replaced every 2-3 months, or more frequently with hard water use. Replacement filters are available from LittleHippo.

Image: A close-up of the demineralization filter, which helps reduce mineral buildup and white dust.
6.4 Essential Oil Pad Replacement
Replace essential oil pads when they become discolored or no longer effectively diffuse scent. Additional pads are available from LittleHippo.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist or low mist output |
|
|
| Unit not turning on |
|
|
| Unpleasant odor |
|
|
| White dust around unit |
|
|
8. Specifications
| Feature | Detail |
|---|---|
| Brand | LittleHippo |
| Model Name | WISPI Humidifier |
| Model Number | KHHU-01 |
| Capacity | 1.6 Liters (54 oz) |
| Runtime | Up to 720 minutes (12 hours) |
| Mist Output | 80-160 ml/hr |
| Floor Area Coverage | Up to 350 Square Feet |
| Operation Mode | Ultrasonic |
| Night Light | 7 LED Color Changing Lights |
| Control Method | Touch |
| Power Source | Corded Electric |
| Voltage | 44 Volts |
| Wattage | 22 watts |
| Item Dimensions (D x W x H) | 8.5"D x 7"W x 8.5"H |
| Item Weight | 3.7 Pounds |
| Material | Plastic |
| Included Components | 3 oil pads, optional demineralization filter |

Image: Infographic detailing the WISPI's capacity (1.6L), working hours (12-24h), mist output (80-160 ml/hr), and room size coverage (100-350 sq ft).
9. Warranty & Support
9.1 Warranty Information
The LittleHippo WISPI unit comes with a Limited 1 Year Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or failure to follow the instructions in this manual.
9.2 Customer Support
For any questions, concerns, or warranty claims, please contact LittleHippo customer support. Contact information can typically be found on the official LittleHippo website or through your purchase platform.
