BLACK+DECKER BUHD055
BLACK+DECKER 1.45 Gallon Ultrasonic Humidifier Instruction Manual
Model: BUHD055
Introduction
This manual provides essential instructions for the safe operation, setup, maintenance, and troubleshooting of your BLACK+DECKER 1.45 Gallon Ultrasonic Humidifier, Model BUHD055. Please read this manual thoroughly before using the appliance and retain it for future reference.
The BLACK+DECKER ultrasonic humidifier is designed to provide dry air relief by adding humidity to your environment. It features a 1.45 gallon (5.5L) water tank capacity, offering up to 40 hours of continuous run time on minimum speed. Suitable for rooms up to 600 square feet, this unit includes a touch panel control with LCD display, dual mist outlets, automatic humidity control, and an auto shut-off function.
Important Safety Information
WARNING: To reduce the risk of fire, electric shock, or injury, always follow basic safety precautions.
- Read all instructions before using the humidifier.
- Place the humidifier on a firm, flat, level surface.
- Do not operate the humidifier without water in the tank.
- Keep the power cord away from heated surfaces.
- Unplug the humidifier before cleaning or refilling.
- Do not block air vents.
- This appliance is for household use only.
Product Overview
Familiarize yourself with the components of your BLACK+DECKER Ultrasonic Humidifier.

Figure 1: Front view of the BLACK+DECKER 1.45 Gallon Ultrasonic Humidifier, showing the control panel and mist outlet.

Figure 2: Dimensions of the BLACK+DECKER 1.45 Gallon Ultrasonic Humidifier: 7.28"D x 9.84"W x 14"H.
Key Features:
- 1.45 Gallon (5.5L) Water Tank: Provides extended operation.
- 40-Hour Run Time: Continuous mist on minimum speed.
- Coverage: Ideal for rooms up to 600 square feet.
- Touch Panel Control with LCD Display: Intuitive operation.
- Dual Mist Outlets: For efficient mist distribution.
- Automatic Humidity Control: Adjustable from 45% RH to 90% RH.
- Auto Shut-off: Activates when the tank is empty or removed.
- 12-Hour Shut-off Timer: For scheduled operation.
- Negative Ion Function: Enhances air quality.
- Quiet Operation: Operates at 35dB.
- Ceramic Infused Filter: Softens water and reduces calcium buildup.
Setup
- Unpacking: Carefully remove all packaging materials and ensure all components are present. Retain packaging for future storage or shipping.
- Placement: Place the humidifier on a flat, stable, water-resistant surface at least 6 inches (15 cm) away from walls and furniture. Ensure the mist outlet is not directed at walls or furniture.
- Filling the Water Tank:
- Remove the water tank from the base.
- Unscrew the water tank cap at the bottom of the tank.
- Fill the tank halfway with water and add 2 tablespoons of white vinegar.
- Shake vigorously and let it stand for 30 minutes.
- Empty the tank and rinse thoroughly with clean water until the vinegar smell is gone.

Figure 3: Demonstrates the process of filling the humidifier's water tank through its wide opening.
- Power Connection: Plug the 59-inch power cord into a standard 120V AC electrical outlet.
Operating Instructions
The humidifier features an intuitive touch panel control with an LCD display.

Figure 4: A hand pressing a button on the humidifier's touch control panel.
- Power On/Off: Press the ON/OFF button to turn the humidifier on or off. The LCD display will illuminate.
- Mist Level Adjustment: Press the MAX/MIN button repeatedly to cycle through 3 mist output levels (Low, Medium, High). The selected level will be shown on the display.
- Humidity Setting: Press the HUMIDITY button to set your desired humidity level. The range is 45% RH to 90% RH in 5% increments. The unit will automatically maintain the set humidity.
- Timer Function: Press the TIMER button to set an automatic shut-off timer. You can set it from 1 to 12 hours. The humidifier will turn off automatically after the set time.
- Negative Ion Function: Press the -ION button to activate or deactivate the negative ion generator, which helps purify the air.
- Dual Mist Outlet: The humidifier features dual mist outlets. You can rotate the top nozzle to direct the mist in different directions.

Figure 5: A hand adjusting the rotatable dual mist outlet on the top of the humidifier.
Automatic Shut-off:
The humidifier will automatically turn off when the water tank is empty or if the tank is removed from the base. This is a safety feature to prevent damage to the unit.
Video 1: An official product video demonstrating the features and operation of the BLACK+DECKER 1.45 Gallon Ultrasonic Humidifier, including its water tank capacity, intuitive controls, and dual mist outlets. This video is provided by the seller, Equity Brands.
Maintenance
Regular cleaning and maintenance are crucial for optimal performance and longevity of your humidifier.
Daily Maintenance:
- Empty the water tank and base daily.
- Rinse the water tank and base with clean water.
- Allow all parts to air dry before reassembling or storing.
Weekly Maintenance:
- Cleaning the Water Tank:
- Remove the water tank and empty any remaining water.
- Fill the tank halfway with water and add 2 tablespoons of white vinegar.
- Shake vigorously and let it stand for 30 minutes.
- Empty the tank and rinse thoroughly with clean water until the vinegar smell is gone.
- Cleaning the Base and Transducer:
- Unplug the unit.
- Carefully pour white vinegar into the water reservoir of the base, covering the transducer (the small disc).
- Let it soak for 30 minutes.
- Use a soft brush or cloth to gently clean the transducer and the inside of the base. Do not scrub aggressively.
- Empty the vinegar and rinse the base thoroughly with clean water.
- Filter Maintenance: The humidifier includes one ceramic infused filter (model HF2) designed to soften water and reduce calcium buildup.

Figure 6: Close-up of the ceramic infused filter (model HF2) that comes with the humidifier.
- Rinse the filter under running water weekly.
- Replace the filter every 3-6 months, depending on water hardness and usage.
Storage:
When storing the humidifier, ensure all parts are clean and dry. Store in a cool, dry place, preferably in its original packaging.
Troubleshooting
Refer to this section for common issues and their solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist or low mist output. |
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| Unusual odor from mist. |
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| Water leakage. |
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| Humidifier turns off unexpectedly. |
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If the problem persists after trying these solutions, please contact customer support.
Specifications
| Feature | Detail |
|---|---|
| Brand | BLACK+DECKER |
| Model Name | Ultrasonic Humidifier with Cool Mist |
| Model Number | BUHD055 |
| Water Tank Capacity | 1.45 Gallons (5.5 Liters) |
| Run Time | Up to 40 hours (on minimum speed) |
| Coverage Area | Up to 600 Square Feet |
| Operation Mode | Ultrasonic |
| Special Feature | Programmable, Automatic Humidity Control (45%-90% RH), Negative Ion Function, 12-hour Timer, Auto Shut-off |
| Noise Level | 35dB |
| Product Dimensions | 7.28"D x 9.84"W x 14"H |
| Item Weight | 5.3 Pounds |
| Voltage | 120 Volts |
| Wattage | 300 watts |
| Included Components | One Ceramic Infused Filter (HF2) |
| Color | White |
Warranty and Support
For warranty information or technical support, please refer to the warranty card included with your product or visit the official BLACK+DECKER website. Please have your model number (BUHD055) and purchase date available when contacting support.
Manufacturer: W Appliance Company
For additional resources, you may visit the BLACK+DECKER Store on Amazon.
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