Introduction
This manual provides essential instructions for the safe and efficient operation, maintenance, and troubleshooting of your Perfect Aire PAU120 1.2 Gallon Ultrasonic Cool Mist Humidifier. This unit is designed to add moisture to the air in medium-sized rooms, helping to alleviate issues caused by dry air. Please read all instructions carefully before use and retain this manual for future reference.
Important Safety Instructions
- Always place the humidifier on a firm, flat, water-resistant surface at least 12 inches (30 cm) away from walls and heat sources.
- Do not operate the humidifier without water in the tank.
- Do not add essential oils or medication directly into the water tank or base.
- Unplug the unit from the power outlet before filling, cleaning, or moving.
- Keep the humidifier out of reach of children and pets.
- Do not block the mist outlet.
- If the unit is damaged, do not operate it. Contact customer support.
Product Components
Familiarize yourself with the parts of your Perfect Aire Humidifier:
- Water Tank: Holds up to 1.2 gallons of water.
- Base Unit: Contains the ultrasonic transducer and control knob.
- Mist Nozzle: Directs the cool mist output.
- Control Knob: Adjusts mist intensity and turns the unit on/off.
- Waterless Indicator: Illuminates when the water tank is empty.

Image 1: Overview of the Perfect Aire PAU120 Humidifier. This image displays the main unit, including the transparent blue water tank and the white base with the control knob.

Image 2: Diagram illustrating key features and dimensions of the humidifier, including ultrasonic cool mist technology, whisper-quiet operation, adjustable output levels, auto shut-off, easy fill design, and waterless indicator.
Setup
- Unpack: Carefully remove the humidifier from its packaging.
- Placement: Place the unit on a flat, stable, and water-resistant surface. Ensure it is at least 12 inches (30 cm) from walls and furniture to allow for proper mist dispersion.
- Fill Water Tank:
- Remove the water tank from the base.
- Unscrew the tank cap and fill the tank with clean, cool tap water. Do not use hot water.
- Securely replace the tank cap.
- Place the filled water tank back onto the base, ensuring it is seated correctly.
- Connect Power: Plug the power cord into a standard electrical outlet.
Operation
- Power On: Turn the control knob clockwise. The power indicator light will illuminate, and mist will begin to emit from the nozzle.
- Adjust Mist Output: Continue turning the control knob clockwise to increase the mist output. Turn it counter-clockwise to decrease the mist output.
- Adjust Mist Direction: The mist nozzle can be rotated 360 degrees to direct the mist as desired.
- Automatic Shut-Off: The humidifier is equipped with an automatic shut-off feature. When the water tank is empty, the unit will automatically turn off, and the waterless indicator light will illuminate. Refill the tank to resume operation.
- Power Off: Turn the control knob counter-clockwise until it clicks to the "OFF" position.

Image 3: The Perfect Aire PAU120 humidifier actively emitting a cool mist into a room environment.

Image 4: Close-up view of the control knob on the Perfect Aire PAU120 humidifier, used for adjusting mist output and power.
Product Features Video
Video 1: This video demonstrates the key features of the Perfect Aire Ultrasonic Cool Mist Humidifier, including its quiet operation, mist output, and adjustable controls.
Maintenance and Cleaning
Regular cleaning is essential to ensure optimal performance and hygiene of your humidifier. This model does not require a filter.
- Daily Maintenance:
- Unplug the unit.
- Empty any remaining water from the tank and base.
- Rinse the water tank and base with clean water.
- Allow all parts to air dry before reassembling.
- Weekly Cleaning (Mineral Deposits):
- Unplug the unit and empty all water.
- Pour 2-4 tablespoons of white vinegar into the water tank and base.
- Let it stand for 20 minutes.
- Gently scrub the inside of the tank and base with a soft brush or cloth to remove mineral buildup.
- Rinse thoroughly with clean water until the vinegar smell is gone.
- Allow all parts to air dry completely before storage or next use.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist or low mist output. |
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| Unusual odor. |
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| Water leakage. |
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Specifications
| Brand | PerfectAire |
| Model Name | PAU120 |
| Operation Mode | Ultrasonic |
| Special Features | Auto Shut Off, Humidistat, Quiet Operation |
| Water Tank Capacity | 1.2 Gallons |
| Run Time | Up to 24 Hours |
| Recommended Room Size | Medium-sized rooms (up to 180 Square Feet) |
| Item Weight | 5 Pounds |
| Product Dimensions | 8.5 x 8.5 x 12.5 inches |
| UPC | 842149028862 |
| Included Components | Main unit, Instruction manual |
Warranty and Support
Your Perfect Aire PAU120 Humidifier comes with a 1 Year Full Replacement Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.
For warranty claims, technical support, or any questions regarding your product, please contact Perfect Aire customer service. Refer to the contact information provided on the product packaging or the official Perfect Aire website.