Important Safety Instructions
Please read all instructions before using this humidifier. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Always unplug the humidifier before filling, cleaning, or moving it.
- Do not operate any humidifier with a damaged cord or plug.
- Do not run cord under carpeting. Do not cover cord with throw rugs, runners, or similar coverings. Arrange cord away from traffic area where it will not be tripped over.
- Use only clean, cool tap water. Do not use hot water.
- Do not place the humidifier near heat sources such as stoves, radiators, or heaters.
- Do not use the humidifier outdoors.
- Keep the humidifier out of reach of children and pets.
- Regular cleaning is essential to prevent mineral buildup and bacterial growth.
- This product is built to meet U.S. voltage requirements. Improper use or shipping the product outside the U.S. will void all warranties.
Product Overview
This manual covers two Vornado humidifier models: the UH200 Ultrasonic Humidifier and the EVDC500 Energy Smart Evaporative Humidifier. Both models are designed for whole-room humidification and feature the convenient SimpleTank System.
Vornado UH200 Ultrasonic Humidifier

The UH200 provides powerful, fan-assisted ultrasonic humidification, distributing moisture evenly across rooms up to 900 sq. ft. It features automatic humidity control with a built-in humidistat and a remote control for convenient adjustments. The 1.75-gallon SimpleTank System offers up to 4 gallons of output every 24 hours, simplifying refills and cleaning.
Vornado EVDC500 Energy Smart Evaporative Humidifier

The EVDC500 is an evaporative humidifier designed for whole-room humidity circulation up to 1,000 sq. ft. It utilizes an Energy Smart DC motor, consuming up to 90% less energy than comparable Vornado AC motor models. Key features include automatic shut-off when water runs out, a low-water indicator, and two 1-gallon SimpleTank Systems providing up to 4 gallons of output every 24 hours. It offers customizable humidity settings and precise auto humidity control, preventing white dust often associated with mist humidifiers.
Setup
Unpacking and Placement
- Carefully remove the humidifier from its packaging.
- Place the humidifier on a firm, level surface at least 6 inches away from walls or furniture. Ensure the area is dry and not susceptible to water damage.
- For optimal whole-room circulation, position the humidifier in a central location within the room.
Filling the Water Tank(s)

Both UH200 and EVDC500 models feature the SimpleTank System for easy filling.
- Unplug the humidifier from the power outlet.
- Remove the water tank(s) from the humidifier base.
- Unscrew the tank cap(s) and fill the tank(s) with cool, clean tap water. Do not overfill.
- Securely replace the tank cap(s).
- Place the filled tank(s) back onto the humidifier base, ensuring they are seated correctly.
Operating Instructions
After setup, plug the humidifier into a standard electrical outlet. The unit is now ready for operation.
UH200 Ultrasonic Humidifier Controls

The UH200 features touch-sensitive controls on the unit and a remote control for convenience.
- Power Button: Turns the unit On/Off.
- Fan Settings: Select between High, Low, or Auto fan speeds. Auto mode adjusts fan speed based on desired humidity.
- Humidity Control: Set desired humidity levels between 40% and 60%, or select Continuous operation. The unit will automatically maintain the set humidity.
- Timer: Set an operating timer (e.g., 2, 4, 8 hours).
- Lock Controls: Press and hold for 3 seconds to lock/unlock the control panel.
EVDC500 Evaporative Humidifier Controls

The EVDC500 features an LED display and push-button controls.
- Power Button: Turns the unit On/Off.
- Fan Speed: Adjust fan speed to control output.
- Humidity Control: Set desired humidity levels (40-60%) or continuous output. The unit will automatically adjust to maintain the set level.
- Energy Smart Mode (Leaf Button): Activates energy-saving mode, automatically turning off the unit if it runs out of water.
- Low-Water Indicator: An indicator light will illuminate when it's time to refill the water tanks.
Maintenance
Regular cleaning and maintenance are crucial for optimal performance and longevity of your humidifier. Always unplug the unit before cleaning.
Daily Maintenance
- Refill water tanks with fresh, cool tap water.
- If the unit will not be used for an extended period, empty and dry the water tanks and base.
Weekly Cleaning (UH200 & EVDC500)
- Unplug the humidifier.
- Remove water tank(s) and empty any remaining water.
- Clean the water tank(s) with a mild detergent and rinse thoroughly. For mineral buildup, use a solution of white vinegar and water (1 part vinegar to 1 part water), let it soak for 20 minutes, then scrub and rinse.
- Clean the humidifier base: Wipe down the interior and exterior surfaces with a soft, damp cloth. For mineral deposits, use the vinegar solution.
- For UH200: Gently clean the ultrasonic nebulizer with a soft brush or cotton swab to remove mineral buildup. Do not use harsh chemicals.
- For EVDC500: Inspect and clean the wicks/filters as per specific instructions in the full product manual (not provided here, but generally involves rinsing or replacing).
- Allow all parts to air dry completely before reassembling.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not turn on. | No power; unit unplugged; water tank not seated correctly. | Ensure unit is plugged in. Check circuit breaker. Re-seat water tank(s) firmly. |
| No mist/humidity output (UH200). | Low water level; mineral buildup on nebulizer; fan not operating. | Refill water tank. Clean nebulizer. Check fan settings. |
| Low humidity output (EVDC500). | Low water level; dirty/clogged wicks/filters; fan speed too low. | Refill water tanks. Clean or replace wicks/filters. Increase fan speed. |
| White dust around unit (UH200). | Hard water used. | Use distilled water or a demineralization cartridge (if available for model). Clean unit regularly. |
| Unusual odor. | Stagnant water; dirty tank/base. | Empty and clean water tank(s) and base thoroughly. Use fresh water daily. |
Specifications
| Feature | Vornado UH200 | Vornado EVDC500 |
|---|---|---|
| Brand | Vornado | |
| Model Name | UH200 | EVDC500 |
| Type | Ultrasonic, Fan-Assisted | Evaporative, Energy Smart DC Motor |
| Capacity | 1.75 Gallons | 2 x 1 Gallon Tanks (Total 2 Gallons) |
| Output (per 24 hours) | Up to 4 Gallons | Up to 4 Gallons |
| Coverage Area | Up to 900 sq. ft. | Up to 1,000 sq. ft. |
| Operation Mode | Automatic | |
| Control Method | Remote, Touch | Touch |
| Special Features | Auto Shut Off, Humidistat, Remote Control | Auto Shut Off, Humidistat, Energy Smart Mode |
| Power Source | Corded Electric | |
| Runtime | 24 hours | |
Warranty and Support
Vornado stands behind its products with comprehensive warranties.
- UH200 Ultrasonic Humidifier: Includes a 5-year satisfaction guarantee.
- EVDC500 Energy Smart Evaporative Humidifier: Includes a 5-year satisfaction guarantee and a 10-year motor warranty.
For technical support, warranty claims, or to order replacement parts, please contact Vornado Customer Service. Refer to the official Vornado website for the most current contact information.
Note: This item is built to meet U.S. voltage requirements. Use with external devices that alter or convert voltage or frequency of electricity, or shipping the product outside the U.S., will void all warranties.