KOIOS UHM-JS02 4L Top Fill Cool Mist Air Humidifier & Essential Oil Diffuser

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* 1-3 year warranty.
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Sale price$49.99
In stock (200 units), ready to be shipped



Traditional humidifiers cannot avoid water leakage due to structural limitations.

KOIOS air humidifier brand-new top-fill design ensures no water leakage.

Upgraded-version KOIOS Humidifier: This KOIOS humidifier has the advantages of innovative structure, easy cleaning, maximum running time of 31 hours, and efficient 350mL/h mist output. On this basis, we have corrected some shortcomings of the previous generation to make this humidifier more durable.

koios humidifers

Easy to Clean Thoroughly

All parts that come into contact with water and where mist passes through can be easily cleaned.

Open the buckles on both sides.

Separate the humidification unit and the humidification unit cover.

Simply and thoroughly clean the inside of the humidification unit.


Humidifier & Essential Oil Diffuser 2-in-1

KOIOS humidifier: You can add essential oil to the mist outlet. This is the most effective way to quickly release the fragrance.

The humidifier is primarily made of PP material (common type of material for baby bottles), which is corrosion resistant. Apply essential oil directly to water tank.

*Old version humidifier: ABS material humidifier cannot be added with essential oil, or can only be added with essential oil to the oil tray.




Top Fill Design

Remove the lid to add purified water or essential oil into the humidifier water tank. No difficulties when refilling or cleaning the inside of the humidifier

Humidifier & Essential Oil Diffuser 2-in-1

Not only an ultrasonic humidifier but an essential oil diffuser, enjoy fresh, perfectly balanced and humidified air.

380mL/h Max Mist Output

With a mist output of up to 380mL/h, the KOIOS bedroom humidifier is very effective in humidifying.




4L Capacity

Design with a large capacity water tank of 4L/1.06Gal. You can enjoy whole night sleep, frees you from refilling water frequently.

31H Runtime

H: 11-13hrs 350-380mL/h

M: 15-16hrs 240-270mL/h

L: 29-31hrs 240-270mL/h

(18-sec intermittent evaporation)

3 Mist Output Presets

Choose low, medium or high cool mist humidification according to the size of your room and humidity level.

"L" setting: the humidifier will run for 18 seconds and then PAUSE for 18 seconds.

Friendly Tips:

1. This is a humidifier with a new structure, you may not be familiar with it, so please check the manual first. If you encounter any problems, please write to us and we will assist you.

2. "L" setting: the humidifier will run for 18 seconds and then PAUSE for 18 seconds.

3. Thorough cleaning (especially when essential oils are used): The humidification unit itself can be disassembled, so you can thoroughly clean the inside of the humidification unit. Please check the video from "Video for this product".

4. Long press for 3 seconds to turn on or off the light.

5. The connection between the humidification unit and the bucket is an elastic buckle. Please fasten the buckle to prevent the humidification unit from floating.

6. Prevent water from entering the power hole and the internal chip. There is a chip on the top of the humidification unit. Do not put the humidification unit upside down or soak it in water to clean it.

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