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Air O Swiss U600 Ultrasonic Warm Cool Mist Humidifiers

Air-O-Swiss U600 Humidifiers
Air O Swiss U600 Ultrasonic Warm Cool Mist Humidifiers

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Air-O-Swiss U600 Humidifiers

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Disperses a cool or warm mist for areas up to 650 sq. ft. and features easy-to-use manual controls and dual output mist regulator button. Includes Hydro Stick and demineralization cartridge.

Why Green

  • Consumes little energy
  • Improves indoor air quality
  • More robust than most humidifiers

Expert Rating:


With the increase of respiratory diseases and pollution, it is highly important to have clean, healthy air in the home. An effective and reliable humidifier, such as our Air-O-Swiss U600 Ultrasonic Humidifier, is the perfect solution to restore a healthy level of moisture to the air during those drier months. The ultrasonic humidifier uses high-frequency vibration technology in pursuance of generating your choice of warm or cool micro-fine mist quietly and with low energy consumption. A Hydro Stick provides fresh humidification performance and a demineralization cartridge prevents white dust. Its simple, manual controls allow you to fine-tune the amount of mist output while a transparent water tank and empty indicator lets you know when the unit needs refilling. This sleek and stylish machine is built-to-last and provides efficient humidification for rooms up to 650 square feet.


  • Room coverage: up to 650 sq. ft.
  • Optional cool or warm mist for optimal comfort
  • Has a built-in hygrostat for controlled humidification. As soon as the humidity exceeds the desired setting, the appliance switches off
  • Hydro Stick provides constant freshness in humidifier
  • Demineralization cartridge - is silver treated and helps prevent lime scales and mineral residues
  • Provides a fast output of mist into the air
  • Variable knob to manually control mist output levels. Mist output outlet can be positioned in any direction
  • Auto shut-off when water tank is empty or desired humidity level is reached
  • Ultra-quiet operation
  • Auto shut-off and indicator when tank is empty
  • Long, durable and sturdy lifetime thanks to industrial strength titanium membrane surface
  • Made in Korea


Cleaning: The recommended cleaning intervals depend on the air and water quality, as well as operating times. Every two weeks the water tank and base should be cleaned and rinsed with water only. Only use the brush that is included to clean the membrane once a week. Change the water in the tank at least once a week if water is standing for more than a week.

Replacements: The Hydro Stick is an advanced water maintenance system that ensures your humidifier's functionality while providing fresh humidification performance. It needs to be exchanged a year after it has first been used. The demineralization cartridge has to be replaced every 2-3 months. If the water is very hard, it may be necessary to replace the cartridge earlier. White dust around the device is a sure sign that the cartridge needs replacing.

How it Works

About Ultrasonic Technology: uses high-frequency vibration to generate a micro-fine mist. A fan blows the mist into the room where it immediately evaporates. Ultrasonic humidifiers consume very little power, are virtually silent and produce a fog-like mist.

Product Usage

Please note: In order to maximize the performance it is recommended the unit be placed at least 2 feet off the floor to allow the mist the opportunity to evaporate before hitting the floor and to eliminate the carpeting or wood floor surrounding it from becoming damp.

The following situations could contribute to excessive white dust so are recommended to be avoided:

  • Using water that has been treated by a water softening system could result in an increased incidence of white dust due to the excess sodium in the softened water. Therefore, it is recommended to use water that bypasses the system, bottled, or distilled water.
  • Use of this product with a negative ionizer air purifier or air cleaner with an optional post ionizing function could contribute to an increased collection of dust on surfaces. If this occurs try operating this product without the negative ionizer air purifier or with the optional ionizing function on the air cleaner off.


Technical Specifications

Air-O-Swiss U600 Humidifiers
Air O Swiss U600 Ultrasonic Warm Cool Mist Humidifiers
Room Coverage 650 sq. ft.
Tank capacity 1.46 gallons
Humidification Performance Up to 3.5 gallons per 24 hours
Auto shut-off Yes
Mist Output Levels Variable
Noise Level <25 dB(A)
Power Supply Cool mist: 40 watts
Warm mist: 125 watts
120V, 60Hz
Weight 8.8 lbs (without water)
Dimensions 14"H x 11"L x 9.5"W
Warranty 3 years

Make Selections

Air-O-Swiss Replacement KIt

Air-O-Swiss Annual Replacement Kit

Shipping Costs*

  • Kit includes:
    • 4 Demineralization Cartridges
    • 4 Hydro Cells

    Availability: Ships out next business day within the U.S. only.
Air-O-Swiss Replacement KIt

Air-O-Swiss Seasonal Replacement Kit

Shipping Costs*

  • Replacement kit Includes:
  • 2 Demineralization Cartridges
  • 2 Hydro Stick

Availability: Ships out next business day within the U.S. only.
Air-O-Swiss Demineralization Cartridges

Set of 2 Air-O-Swiss Replacement Demineralization Cartridges #AOS 7531

Shipping Costs*
Item #: AS-HU KCART2

  • 2 replacement demineralization cartridges for Air-O-Swiss ultrasonic humidifiers

Availability: Ships out next business day within the U.S. only.
Air-O-Swiss Hydro Stick

Replacement Hydro Stick for Air-O-Swiss & Other Humidifiers #AOS 7017

Shipping Costs*

  • Provides constant freshness in humidifier
  • Can be used for all Air-O-Swiss and other humidifiers
  • Replace once a year

Availability: Ships out next business day within the U.S. only.
EZCal decalcification cleaner

EZ Cal Humidifier Cleaner #AOS 7417

Shipping Costs*
Item #: AS-HU EZK

  • 3 Packages of EZCal decalcification cleaner
  • 3 packets per package for a total of 9 packets

Availability: Ships out next business day within the U.S. only.
The Air-O-Swiss U600 Humidifiers is only one of our humidifiers. See how the Air-O-Swiss U600 Humidifiers compares to other models in our humidifiers comparison. You can view other models around $1000000000 with very good plus rating on all humidifiers. This page features one of our humidifiers - the Air-O-Swiss U600 Humidifiers.