Torn between buying an essential oil diffuser and a cool mist humidifier? You can have both with the Seneo Ultrasonic Cool Mist Humidifier.

This humidifier helps you get rid of all your cold symptoms while helping you gain back your skin’s moisture and softness and making your home smell fresh and clean.

Apart from releasing tiny water particles and ionizing the air with aromatherapy scents that you love, the Seneo Ultrasonic Cool Mist Humidifier also features different colored lights that can set your mood and help you relax after a long day at work.

Whether in the bedroom or the sitting room, this sophisticated-looking humidifier is a perfect complement to your furnishings, with its customizable display.


  • 3-liter water capacity that allows 33 hours of continuous operation at low setting and 12 hours of continuous use at high setting
  • Uses ultrasonic technology that immediately humidifies the air without heat production, making it ideal for use around kids
  • Features a sensor control that allows the machine to adjust moisture output according to the humidity in the room
  • Has an auto-swing feature for wider reach
  • Doubles as a night light with seven different colored lights
  • Dimensions: 9.1 inches x 14 inches x 9 inches
  • Weight: 6.8 lbs
  • Trial period: 45 days
  • Warranty: 18 months


The SeneoCool Mist Humidifier’s tank’s three-liter size is rather impressive, claiming to run for up to 33 hours at the lowest setting or weak spraying mode, allowing you to run the contraption for a longer time without the need to refill the water ever so often.

The appliance has an auto-shut feature, allowing it to determine the volume of water in the tank and to automatically shut down when the water goes below a certain level, which prevents overheating and breakage.

It also has a timer that allows you to set the humidifier at eight-hour intervals.

Aside from the usual power button, the unit also has the control button, which allows you to adjust the setting to high, medium or low.

Then there’s the oscillate button, which lets the mist vent swing 45 degrees to the left and to the right, or at 90 degrees to make sure that the moisture is spread across all directions in the room.

It also features the LED light button that allows you to control the color of the light the humidifier displays.

Setting the modifier is very easy. You simply need to detach the tank from the base, unscrew the water tank cover at the bottom and fill the tank with water. Put back the cover and secure the tank to the base, power it up and adjust the settings.

Cleaning is also very easy; instead of putting water in the tank, replace it with vinegar. Let the vinegar sit for 30 minutes and rinse. If you plan on storing the humidifier after use, make sure it is clean and thoroughly dry.

Quiet and unobtrusive, the Seneo Cool Mist Humidifier also does a good job of diffusing essential oils. At the back of the unit you will find a tray with a reusable pad on which you can put a few drops of the essential oil of your preference.

All in all, the Seneo Cool Mist Humidifier proves to be good value for your money, as it functions as an effective humidifier, an essential oil diffuser and a night light in one classy package.


There are complaints that while the LED lights in the diffuser make the water in the tank pretty, it is not bright enough to illuminate the room as a night light.

In fairness to this feature, some users actually think that the brightness is just enough and does not produce a glare that can hurt the eyes – perfect for a relaxing, quiet night.

The humidifier features an auto shut-off application that turns that unit off once there is no more water to use, but when you detach the tank from the base, you will see that the base still has water left in it.

If you are not careful, you might spill the water and even get the control buttons wet. You might also experience leaking, which some users have experienced.

There was even one instance where the unit caught fire – something you don’t want, especially if you will be using the humidifier for your child’s room. But this is probably a rare case of defective merchandise.

However, the manufacturer is quick to apologize and act on the matter in case the unit is defective, is not functioning properly, or breaks easily.


The Seneo Cold Mist Humidifier is a good piece of equipment to have, especially during winter, but like everything else, it has its glitches too. If you decide to give it a try, don’t expect everything to be perfect.