HoMedics UHE-WMTF342
HoMedics Deluxe Ultrasonic Humidifier User Manual
Model: UHE-WMTF342
Introduction
Thank you for purchasing the HoMedics Deluxe Ultrasonic Humidifier. This advanced humidifier is designed to improve air quality in large rooms by providing both warm and cool mist options, incorporating UV-C technology for cleaner mist, and offering aromatherapy capabilities. Please read this manual thoroughly to ensure proper use, maintenance, and optimal performance of your device.

Image: The HoMedics Deluxe Ultrasonic Humidifier, black in color, shown with its product packaging and remote control. The humidifier features a digital display and a sleek, modern design.
Package Contents
Please verify that all components are present in your package:
- (1) HoMedics Deluxe Ultrasonic Humidifier
- (1) Remote Control
- (2) "AAA" Batteries (for remote control)
- (1) Demineralization Cartridge
- (3) Essential Oil Tray Pads
- (1) 2-Year Limited Warranty Information
Setup Guide
Follow these steps to set up your humidifier for first use:
- Placement: Place the humidifier on a firm, flat, waterproof surface at least 12 inches (30 cm) away from walls and appliances. Ensure the mist outlet is not directed at furniture or electronics.
- Power Connection: Plug the power cord into a 120V AC electrical outlet.
- Fill Water Tank: The humidifier features a top-fill design. Remove the top cover. Fill the 1.5-gallon tank with clean, cool tap water. Do not use hot water. Do not fill past the MAX fill line. Replace the top cover securely.
- Install Demineralization Cartridge: Locate the demineralization cartridge slot at the bottom of the water tank. Insert the provided demineralization cartridge. This helps reduce mineral buildup and white dust.
- Insert Batteries into Remote: Open the battery compartment on the remote control and insert the two "AAA" batteries, observing polarity (+/-) markings.

Image: A hand pouring water into the top-fill opening of the HoMedics Deluxe Ultrasonic Humidifier. The image highlights the convenient top-fill design.
Operating Instructions
Controls and Display
Your humidifier can be operated using the LED touch panel on the unit or the included remote control. The digital display shows current humidity levels and settings.

Image: The HoMedics Deluxe Ultrasonic Humidifier with visual callouts pointing to its key features, including the digital display, UV-C technology, programmable humidistat, and dual 360-degree rotating mist nozzles.
- Power Button: Press to turn the unit ON or OFF.
- Mist Settings: Cycle through 7 mist output levels to adjust the intensity of the mist.
- Warm/Cool Mist: Select between warm mist (for added comfort in colder environments) or cool mist (for general humidification).
- Programmable Humidistat: Set your desired humidity level. The smart-adjust humidity sensor will automatically turn the unit on/off to maintain this level. The color indicator on the display provides a quick visual of the current humidity status.
- UV-C Technology: This feature operates internally to reduce bacteria, mold, and fungus in the mist. It is always active when the unit is running and is not visible to the eye.
- Timer: Set an auto-off timer for up to 12 hours.
- Night Light: Turn the soft night light ON or OFF.
- Auto Shut-off: The unit will automatically turn off when the water tank is empty.
Aromatherapy Feature
Enhance your environment with essential oils using the built-in aromatherapy tray:
- Locate the essential oil tray at the base of the humidifier.
- Pull out the tray.
- Add 5-7 drops of your favorite essential oil onto one of the included essential oil pads.
- Slide the tray back into the humidifier. The aroma will diffuse into the air along with the mist.
- To change scents, replace the essential oil pad. Additional pads can be purchased separately.

Image: A close-up view of the essential oil tray on the HoMedics Deluxe Ultrasonic Humidifier, with the text "OIL TRAY - PUSH HERE" visible, indicating how to access it for aromatherapy.
Maintenance and Cleaning
Regular cleaning is essential for optimal performance and to prevent mineral buildup and mold. Always unplug the unit before cleaning.
Daily Maintenance
- Empty any remaining water from the tank and base.
- Wipe the tank and base dry with a clean, dry cloth.
Weekly Cleaning (or more often with hard water)
- Descaling the Tank:
- Pour 2 cups of white vinegar into the water tank.
- Replace the top cover and gently swirl the vinegar around the tank.
- Let it soak for 30 minutes.
- Empty the vinegar and rinse the tank thoroughly with clean water.
- Descaling the Base:
- Pour 2 cups of white vinegar into the base reservoir.
- Let it soak for 30 minutes.
- Using a soft brush or cloth, clean the internal components, including the ultrasonic transducer.
- Rinse the base thoroughly with clean water. Do not submerge the base in water.
- Clean Tank Technology: The built-in Clean Tank Technology helps protect the tank from mold and mildew. However, regular manual cleaning as described above is still recommended.
- Demineralization Cartridge: Replace the demineralization cartridge every 30-40 fillings, or when you notice increased white dust around the humidifier.
Troubleshooting
Refer to this table for common issues and their solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist or low mist output. |
|
|
| White dust around humidifier. |
|
|
| Unusual odor. |
|
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| Unit leaks water. |
|
|
Product Specifications
| Feature | Detail |
|---|---|
| Model Name | Deluxe Ultrasonic Humidifier |
| Model Number | UHE-WMTF342 |
| Brand | HoMedics |
| Operation Mode | Ultrasonic (Warm & Cool Mist) |
| Water Tank Capacity | 1.5 Gallons |
| Runtime | Up to 70 hours (depending on mist setting) |
| Coverage Area | Up to 502 sq. ft. |
| Special Features | UV-C Technology, Digital Programmable Humidistat, Smart-Adjust Humidity Sensor, Aromatherapy Tray, Auto Shut-off, Night Light, Remote Control |
| Product Dimensions | 7.42"D x 10.43"W x 15.7"H |
| Item Weight | 6.64 pounds |
| Power Source | Corded Electric |
| Batteries Required | 2 AAA (for remote, included) |
Warranty and Support
2-Year Limited Warranty: Your HoMedics Deluxe Ultrasonic Humidifier is covered by a 2-year limited warranty from the date of purchase. This warranty covers defects in material and workmanship under normal use. It does not cover damage caused by misuse, abuse, accident, attachment of unauthorized accessories, alteration to the product, or any other conditions whatsoever that are beyond the control of HoMedics.
For warranty service or technical support, please contact HoMedics Customer Service. Do not attempt to repair the unit yourself.
Contact Information:
Please refer to the contact information provided in your product packaging or visit the official HoMedics website for the most up-to-date support details.
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