General Humidifier Questions

Why isn’t there enough moisture in my room?
How much moisture do I need in my room?
What are the effects of too little or too much humidity?
Why do I need a humidifier when I can just open my window?
Where should I place my humidifier?

Ultrasonic FAQs

Why does it say open/close on the demineralization cartridge cap?
I just replaced my cartridge, and the contents and water in the base has turned a blue-green color.
There is no fill-line on the water tank, how far may I fill it up?
What is the purpose of the demineralization cartridge (DMC)?
Is it ok to use distilled water with the unit?
I just replaced the contents of the cartridge and now have granules everywhere.
The directions tell me not to place the unit directly on the floor, why do I have to elevate the unit?
Water does not go into the tank.
Why is my unit discharging white dust?
Cleaning light is flashing (AOS U650, AOS 7135, AOS 7142, AOS 7144, AOS 7147)
Reset cleaning light (AOS U650, AOS 7135, AOS 7142, AOS 7144, AOS 7147)
The hygrometer on unit reads a different humidity level than external hygrometer.
Humidity level is not changing or does not reach the desired humidity level.
Tank is leaking
Placing the face in the mist
No mist / unit is not working / empty indicator keeps flashing
Water tank cap is too tight to unscrew
Unit is running intermittently.
How can I set the display on dimmer mode (AOS U650 only)?
Why does the AOS U650 display high humidity levels when I first turn it on?

Ultrasonic Accessories FAQs

Do I need to keep any parts before I replace the demineralization cartridge?
What is the Hydro Cell and how long is it good for?
Placement of the Hydro Cell
Replacement reminder
What is EZ Cal?

Travel Ultrasonic FAQs

I travel overseas. Will the Travel Ultrasonic work in European outlets?
Will the unit fit in a "carry on" bag?
The unit has stopped emitting a mist.
Can I use the Travel Ultrasonic in my home or office?
What kind of water should I use?
The "Empty" indicator is lit.
Can I control the volume of mist output?

Air Washer FAQs

How long will the water in base last once the water tank is empty?
I fill the water tank, and when I place it back on the unit all of the water goes into the base. Why is that?
If my unit runs dry is that ok?
Cleaning light is flashing (AOS 2055D only)
How do I reset cleaning light (AOS 2055D only)?
Is it ok to put my humidifying discs in the dishwasher?
Why does the hygrometer on my unit read a different humidity level than external hygrometer?
Humidity level is not changing or does not reach the desired humidity level
Can this unit be used all year round?

Air Washer Accessories FAQs

What is the Hydro Cell and how long is it good for?
Placement of the Hydro Cell
Replacement reminder
What is EZ Cal?

Evaporator FAQs

Where should I place my humidifier?
If my unit runs dry is that ok?
Can this unit be used all year round?
Is it ok to put the removable water base in the dishwasher?
Can I use distilled water?
Humidity level is not changing or does not reach the desired humidity level

Evaporator Accessories FAQs

Replacement reminder
What is EZ Cal?

Air Cleaner & Combi Unit FAQs

I just received my unit and it is making a very loud vibrating noise. Is that normal?
The intake on my unit is not the same. What should I do?

General Humidifier Questions

Q: Why isn’t there enough moisture in my room?
A: Moisture must be added to the air continuously to maintain a constant level.
  • If you run the unit only at night moisture levels will drop during the day. Continuous operation will ensure a constant level of moisture.
  • Leaving a door or window open allows moisture to escape the room. Consider closing windows and doors, if possible, while the unit is running.
  • Wood, leather, carpet, curtains, and other types of fabric soak up moisture from the air.
  • Do not place your unit next to a heat vent. Rather than circulating moist air, the hot air blowing from the vent will soak up most of the moisture.

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Q: How much moisture do I need in my room?
A: Suggested humidity levels are between 40 – 60%.

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Q: What are the effects of too little or too much humidity?
A: Dry air can cause dry skin, static electricity, out of tune musical instruments, increased levels of dust ( dry air causes dust to rise), damage to wooden objects (drying and eventual cracking), general discomfort, sickness, and dry nasal membranes.

Over-humidifying the air can cause mold to form and wallpaper to peel.

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Q: Why do I need a humidifier when I can just open my window?
A: The moisture level of outside air is not high enough to humidify a room. Colder air is less capable of holding moisture, and the more the air is heated up the percentage of relative humidity is lower. Relative humidity means the amount of water vapor in the air, compared to the amount the air could hold if it was totally saturated. The difference is higher between outside and inside temperatures; more humidification is needed because of the dry air in the room.

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Q: Where should I place my humidifier?
A: The unit should be free-standing and not close to a wall, window, door, or thermal bridge so that air may circulate around the unit. The ultrasonic humidifiers should be placed in an elevated position at least 3 feet off the floor so that mist will have the opportunity to evaporate before hitting the floor. The idea with this product type is to force humidity into the air. Placing the unit low or on the floor could cause carpeting or wood floor surrounding the unit to become damp.

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Ultrasonic FAQs

Q: Why does it say open/close on the demineralization cartridge cap?
A: The directions are there to assist you should you decide to use the refill option to replace the cartridge granules. If you open the cap before placing the cartridge in the water tank you will notice granules in the water tank and base of the unit. Immediately turn off the unit, and empty the water out of the base and water tank. Remove all granules from base and water tank. Use brush to clean around membrane.

Caution: Do not dispose of granules in your sink! Used granules must be placed in the trash!

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Q: I just replaced my cartridge, and the contents and water in the base has turned a blue-green color.
A: This sometimes occurs when the cartridge, or even the granules, are replaced. This does not occur with all replacement cartridges or granules, and is a reaction of water content and the Ultrasonic vibrations. This is not an indicator to replace the cartridge.

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Q: There is no fill-line on the water tank, how far may I fill it up?
A: There is no fill line on the water tank, and it may be filled all the way to the top.

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Q: What is the purpose of the demineralization cartridge (DMC)?
A: The DMC removes minerals from the water to prevent white dust. The contents of the cartridge need to be soaked for 24 hrs prior to first using the unit so that they may fully expand and remove minerals from the water.

The contents of the DMC have a life of 2 – 3 months. The cartridge may need to be replaced more often depending on water hardness and how often the unit is used. The presence of white dust or reduced amount of mist output is an indication of when the DMC needs to be changed.

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Q: Is it ok to use distilled water with the unit?
A: For best results with your ultrasonic humidifier use distilled or reverse-osmosis water and remove the demineralization cartridge.

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Q: I just replaced the contents of the cartridge and now have granules everywhere.
A: First, make sure there are no granules in the middle of the cartridge. Placing granules in the middle of the DMC allows them to escape in the unit. Immediately turn off the unit, and empty the water out of the base and the water tank. Begin removing all granules from base and water tank. Use brush to clean around membrane.

Caution: Do not dispose of granules in your sink! Used granules must be placed in the trash!

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Q: The directions tell me not to place the unit directly on the floor, why do I have to elevate the unit?
A: The idea with this unit is to allow one to force humidity into the air. Because of this, the carpeting or wood floor surrounding the unit may become damp. If the unit is placed at least 3 feet off the floor, the mist will have the opportunity to evaporate before hitting the floor.

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Q: Water does not go into the tank.
A: In order to fill the tank, it must be turned upside down. The cartridge is placed on the water tank cap. Do not pour water into the mist outlet tube.

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Q: Why is my unit discharging white dust?
A: White dust particles are minerals that are broken up in tiny pieces by the ultrasonic process. To Solve this problem:

  • Soak the demineralization cartridge in a bowl of water for a minimum of 24 hours. If the cartridge is soaked in the water tank, the water in the tank and the base needs to be replaced before using the unit.
  • Exchange the demineralization cartridge after 1-2 months when you use very hard water (for softer water after 2-3 months). No matter how hard your water is, exchange the cartridge at the very latest after 6 months.
  • Don’t use water from a pre-installed water softener, or sodium instead of calcium will be emitted from the unit. Use distilled water instead and remove the demineralization cartridge.
  • For very hard water areas use only distilled water and remove the demineralization cartridge.
  • Use Reverse-Osmosis water (R-O water) instead of distilled water and remove the demineralization cartridge.

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Q: Cleaning light is flashing (AOS U650, AOS 7135, AOS 7142, AOS 7144, AOS 7147)
A: Switch the unit OFF and unplug it. Empty the water in the base. Rinse the base with hot/clean water. Do not submerge the base! Visually inspect the base for dirt or mineral build up. If soft water is used decalcifying the unit every 4 weeks with EZ Cal is suggested. If hard water is used the unit should be decalcified every 2 weeks. Do not forget to reset the clean light after resetting the unit.

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Q: Reset cleaning light (AOS U650, AOS 7135, AOS 7142, AOS 7144, AOS 7147)
A: The cleaning light does not automatically reset. Hold down the power button (button A in instruction manual) until the light stops flashing. The light automatically comes on approximately 14 days after plugging in the unit.

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Q: The hygrometer on unit reads a different humidity level than external hygrometer.
A: Not all hygrometers are calibrated the same, and most are off by +/- 5%. Plus the humidity level is not the same in the whole room. The air circulation is different in every corner of the room. The unit should not be placed near a heating vent or a radiator as the heat will absorb all of the moisture.

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Q: Humidity level is not changing or does not reach the desired humidity level.
A: If the water tank needs refilling more than once per day, the unit is working properly and the climatic condition in the room has an influence on the humidity.

Reasons for low humidity level:

  • air circulation is very high (air is fully exchanged several times per day – the humidifier needs to starts its work from scratch)
  • insulation of home (see air circulation)
  • open space with high ceilings ( both the square footage and ceiling height of the impact humidity level) – high-rise buildings require more humidification
  • open windows – works similar to air circulation (if it is very cold outside don’t open the window more than 2 times per day for 3 minutes)
  • big difference between outside temperature and inside temperature – the colder the air the less moisture it is capable to hold and the more the air is heated up the lower is the percentage of relative humidity (=the amount of water vapor in the air, compared to the amount the air could hold if it was totally saturated)
  • position of the unit - if it is placed close to a door, window or air vent. This increases the air circulation.

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Q: Tank is leaking
A: Check tank for hairline cracks. Dropped units or water tanks that are cracked will not be covered under the warranty. Please contact the retailer the unit was purchased from in case your unit arrives damaged.

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Q: Placing the face in the mist
A: It is not recommended that anybody places their face in the mist. Do not allow children to play with this product. It is an electrical appliance and must be handled with proper care.

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Q: No mist / unit is not working / empty indicator keeps flashing
A: Fill up the water tank. Check if water is flowing through the demineralization cartridge (attached to the water tank cap). If the water tank is full but there is only little water in the base it indicates that the water is now flowing through the demineralization cartridge.

  • Wait for 15 minutes to allow the mist to come out of the unit.
  • If the unit is not working and the empty light is not flashing you might have set the desired humidity too low and the current humidity level in the room is higher. That is why the unit switches off automatically.
  • If the empty indicator continues flashing and the tank is full, water is not flowing through the cartridge. Exchange the cartridge or the granules in the cartridge after 2-3 months, in areas with hard water exchange the cartridge after 1 -2 months. However, the demineralization cartridge and or the granules must be exchanged at the latest after 6 months or the unit does not reach its full performance.
If the granules are new, see the following instructions:

  • Make sure the cartridge and/or granules were soaked for 24 hours, water takes longer to filter through dry granules in cartridge and into the base. Next, remove 2 tablespoons of granules from the cartridge, and throw them away. Too many granules in the cartridge it does not allow water to flow from the tank to the base.

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Q: Water tank cap is too tight to unscrew
A: This could be a cause of the air pressure within the water tank. Depress the spring on the bottom of the water tank cap to release air from the water tank. Continue to do this until you are able to unscrew the water tank cap.

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Q: Unit is running intermittently.
A: How long has it been since the contents of the cartridge were replaced? If 2-3 months have passed, it is time to replace the contents of the cartridge. However the demineralization cartridge and or the granules must be exchanged at the latest after 6 months or the unit ceases operating at its full performance. If the contents of the cartridge were just replaced there are probably too many granules in the cartridge. Remove 2 tablespoons of granules from the cartridge.

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Q: How can I set the display on dimmer mode (AOS U650 only)?
A: The dimmer mode dims the display while in either manual or sleep mode. Manually - press the on/off button once for switching the unit on and using the normal display brightness. By pressing it twice, the dimmer is switched on which automatically dims the display brightness. By pressing it a third time, the unit is switched off. By pressing the Auto/Sleep button once, the automatic function is switched on obtaining optimum humidity subject to temperature. By pressing this button twice, the sleep function is switched on and the display brightness is automatically dimmed. Additionally, when changing any setting the display will illuminate for a few seconds before returning to dimmer mode.

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Q: Why does the AOS U650 display high humidity levels when I first turn it on?
A: When the humidifier is first turned on, the current humidity level on the display may show an elevated humidity level approximately 10 -15% higher than an external hygrostat. You should place the humidity level at CO for Continuous and run the humidifier at this setting for a minimum of one hour. During this time the humidity level will continue to adjust to the desired setting. You will notice the Mist Output Indicator signals will be pulsing during this determination time. Our unit is designed to be as accurate as necessary and may need extra time to determine humidity levels in the room.

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Ultrasonic Accessories FAQs

Q: Do I need to keep any parts before I replace the demineralization cartridge?
A: Yes, always keep the water tank cap (this is the piece that attaches the demineralization cartridge to the water tank).

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Q: What is the Hydro Cell and how long is it good for?
A: The Hydro Cell ensures the humidifier's functionality while providing fresh humidification performance. 
The Hydro Cell needs to be replaced every 1-2 months of use depending on the quality of the water. The Hydro Cell can be used in all AIR-O-SWISS Ultrasonic and Air Washer humidifiers. 

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Q: Placement of the Hydro Cell
A: Refer to the "Quick Set Up" guide or instruction manual for more information.

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Q: Replacement reminder
A: In each Hydro Stick box there is a lifecycle indicator. Check the box of the month when starting to use the Hydro Stick and write the year on the line indicated. Exchange it after 12 months.

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Q: What is EZ Cal?
A: There is a sample packet of EZCal included in the packaging of selected AIR-O-SWISS humidifiers. EZCal is used for cleaning and descaling any of the AIR-O-SWISS products, and cleans mineral build-up. EZCal is the only recommended cleaning and descaling solution. Do NOT use any other cleaning solutions since it can damage the product. Use of cleaning solutions other than EZCal will void the product warranty. Instructions for using are on the packet. Only use 1 packet for 32oz of water. Do not change the ratio. It can also be used for any other humidifier brand. Do NOT run the unit when using EZCal. This can cause damage to the product and voids the warranty. Thoroughly rinse the base with potable water and make sure no EZCal residues remain in the base! EZCal is available at selected retail stores.

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Travel Ultrasonic FAQs

Q: I travel overseas. Will the Travel Ultrasonic work in European outlets?
A: Your Travel Ultrasonic comes with an AC adapter AND exchangeable plugs for use in both North America and Europe. This handy unit works on both sides of the Atlantic.

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Q: Will the unit fit in a "carry on" bag?
A: The light-weight unit (less than 1 lb. empty) is very compact and comes with it's own travel case. It will fit inside most carry on luggage, a back pack or even a purse.

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Q: The unit has stopped emitting a mist.
A: The Travel Ultrasonic features an automatic shut-off. Simply replace the water bottle and turn the unit ON.

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Q: Can I use the Travel Ultrasonic in my home or office?
A: Depending on your needs, this unit can be used in your office or at work. It is designed to effectively humidify the air in a small area. Place it on your desk at work or on a table in your home near your bed or other place you spend a lot of time to receive maximum benefit.

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Q: What kind of water should I use?
A: The Travel Ultrasonic is designed to receive water from a typical water bottle that you might purchase at any store. Simply insert the receptacle connector into the bottle and place into the unit in an inverted position so water flows from the bottle into the unit. You can re-use the same bottle with water from most any tap. Distilled water also works perfectly with the Travel Ultrasonic. Do not use sparkling water since this will result in a weak performance of the unit.

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Q: The "Empty" indicator is lit.
A: Refill the bottle with water.

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Q: Can I control the volume of mist output?
A: Yes. The Travel Ultrasonic is designed with a mist output control that allows you to control the level of humidification.

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Air Washer FAQs

Q: How long will the water in base last once the water tank is empty?
A: Many factors impact the time water in the base will last. The size of the room and dryness of the room's air have an effect. If you notice that there is no water left in the water tank, it is always a good idea to refill the tank to have extra water available.

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Q: I fill the water tank, and when I place it back on the unit all of the water goes into the base. Why is that?
A: Water is needed in the base of the unit for the removal of particles from the air, and for the humidification of the air. The first time the tank is filled up and placed on the unit, all of the water will go into the base of the unit. The water tank acts as a reserve, and may be filled up a second time to have extra water available.

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Q: If my unit runs dry is that ok?
A: If there is a possibility that the unit will run dry while you are away it is best to turn the unit off before you leave. The unit will not be able to remove particles from the air if there is no water, and you may notice a foul odor. Except of the AOS 2055A and AOS 2055D (digital unit) that uses the automatic switch-off.

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Q: Cleaning light is flashing (AOS 2055D only)
A: Switch the unit OFF and unplug it. Empty the water in the base. Rinse the base with hot/clean water. Do not submerge the main body! Visually inspect the base for dirt or mineral build up. Depending on the water hardness decalcifying the water base approximately every 4 weeks with EZ Cal (AOS 7417). Do not forget to reset the "Clean" light after cleaning; hold both hygrostat buttons until cleaning indicator disappears.

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Q: How do I reset cleaning light (AOS 2055D only)?
A: The cleaning light does not automatically reset. Hold down both hygrostat buttons (symbol B in the instruction manual) until the cleaning indicator stops flashing. The light automatically comes on approximately 14 days after plugging in the unit.

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Q: Is it ok to put my humidifying discs in the dishwasher?
A: NO. The manufacturer of this appliance does NOT recommend it. The discs can only be placed in a dishwasher where the temperature is no greater than 131°F / 55ºC. If the temperature is any hotter than this, the discs will melt. Place the discs in a sink filled with warm water and EZCal (AOS 7417) and either let them soak or spin the discs in this solution. Or, add EZCal to the water in the base of the unit and let the unit run for an hour to clean the discs.

It is good to have calcium deposits built up on the discs as it will capture more particles from the air and add more moisture to the air.

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Q: Why does the hygrometer on my unit read a different humidity level than external hygrometer?
A: Not all hygrometers are calibrated the same, and most are off by +/- 5%. Plus the humidity level is not the same in the whole room. The air circulation and temperature are different in every corner of the room and may affect the humidity level. The unit should not be placed near a heat vent or a radiator as the heat will absorb all of the moisture.

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Q: Humidity level is not changing or does not reach the desired humidity level
A: If the water tank needs refilling more than once per day, the unit is working properly and the climatic condition in the room has an influence on the humidity.

 

Reasons for low humidity level:

  • air circulation is very high (air is fully exchanged several times per day – the humidifier needs to starts its work from scratch)
  • insulation of home (see air circulation)
  • open space with high ceilings (both the square footage and ceiling height impact humidity level) – high-rise buildings require more humidification
  • open windows – works similar to air circulation (if it is very cold outside don’t open the window more than 2 times per day for 3 minutes)
  • big difference between outside temperature and inside temperature – the colder the air the less moisture it is capable to hold and the more the air is heated up the lower is the percentage of relative humidity (= the amount of water vapor in the air, compared to the amount the air could hold if it was totally saturated)
  • position of the unit – if it is placed close to a door, window or air vent. This increases the air circulation.

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Q: Can this unit be used all year round?
A: Yes, the unit can be used all year round. The unit produces relative humidity, which means that the air will only take as much moisture as it can hold. The unit will not over-humidify the air.

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Air Washer Accessories FAQs

Q: What is the Hydro Cell and how long is it good for?
A: The Hydro Cell ensures the humidifier's functionality while providing fresh humidification performance.
The Hydro Cell needs to be replaced every 1-2 months of use depending on the quality of the water. The Hydro Cell can be used in all AIR-O-SWISS Ultrasonic and Air Washer humidifiers.

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Q: Placement of the Hydro Cell
A: Refer to the "Quick Set Up" guide or instruction manual for more information.

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Q: Replacement reminder
A: In each Hydro Stick box there is a lifecycle indicator. Check the box of the month when starting to use the Hydro Stick and write the year on the line indicated. Exchange it after 12 months.

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Q: What is EZ Cal?
A: There is a sample packet of EZCal included in the packaging of selected AIR-O-SWISS humidifiers. EZCal is used for cleaning and descaling any of the AIR-O-SWISS products, and cleans mineral build-up. EZCal is the only recommended cleaning and descaling solution. Do NOT use any other cleaning solutions since it can damage the product. Use of cleaning solutions other than EZCal will void the product warranty. Instructions for use are on the packet. Only use 1 packet for 32oz of water. Do not change the ratio. It can also be used for any other humidifier brand. Do NOT run the unit when using EZCal. This can cause damage to the product and voids the warranty. Thoroughly rinse the base with potable water and make sure no EZCal residues remain in the base! EZCal is available at selected retail stores.

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Evaporator FAQs

Q: Where should I place my humidifier?
A: The unit should be free standing, on a flat surface and not close to a wall, window, door, or thermal bridge so that air can circulate around and underneath the unit.

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Q: If my unit runs dry is that ok?
A: If there is a possibility that you will be unable to add water to the unit and it will run dry, turn the unit off before you leave. The unit will not be able to humidify the air if there is no water in it, and you may notice a foul odor.

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Q: Can this unit be used all year round?
A: Yes, the unit can be used all year round. The unit produces relative humidity, which means that the air will only take as much moisture as it can hold. The unit will not over-humidify the air.

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Q: Is it ok to put the removable water base in the dishwasher?
A: Do not place the removable water base in the dishwasher. The removable water base will melt. Fill the removable water base with the prescribed ratio of water and EZCal as described on the packaging of EZCal. EZCal will remove mineral deposits from the removable water base.

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Q: Can I use distilled water?
A: Yes, the evaporator does not need the minerals in the tap water to function properly.

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Q: Humidity level is not changing or does not reach the desired humidity level
A: If the water tank needs refilling more than once per day, the unit is working properly and the climatic condition in the room has an influence on the humidity.

 

Reasons for low humidity level:

  • air circulation is very high (air is fully exchanged several times per day – the humidifier needs to starts its work from scratch)
  • insulation of home (see air circulation)
  • open space with high ceilings (both the square footage and ceiling height impact humidity level) – high-rise buildings require more humidification
  • open windows – works similar to air circulation (if it is very cold outside don’t open the window more than 2 times per day for 3 minutes)
  • big difference between outside temperature and inside temperature – the colder the air the less moisture it is capable to hold and the more the air is heated up the lower is the percentage of relative humidity (= the amount of water vapor in the air, compared to the amount the air could hold if it was totally saturated)
  • position of the unit – if it is placed close to a door, window or air vent. This increases the air circulation.

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Evaporator Accessories FAQs

Q: Replacement reminder
A: In each Hydro Stick box there is a lifecycle indicator. Check the box of the month when starting to use the Hydro Stick and write the year on the line indicated. Exchange it after 12 months.

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Q: What is EZ Cal?
A: There is a sample packet of EZCal included in the packaging of selected AIR-O-SWISS humidifiers. EZCal is used for cleaning and descaling any of the AIR-O-SWISS products, and cleans mineral build-up. EZCal is the only recommended cleaning and descaling solution. Do NOT use any other cleaning solutions since it can damage the product. Use of cleaning solutions other than EZCal will void the product warranty. Instructions for using are on the packet. Only use 1 packet for 32oz of water. Do not change the ratio. It can also be used for any other humidifier brand. Do NOT run the unit when using EZCal. This can cause damage to the product and voids the warranty. Thoroughly rinse the base with potable water and make sure no EZCal residues remain in the base! EZCal is available at selected retail stores.

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Air Cleaner & Combi Unit FAQs

Q: I just received my unit and it is making a very loud vibrating noise. Is that normal?
A: No, the unit should not make any loud noise. Your unit was damaged in shipping and needs to be replaced. Please contact the retailer you have purchased your unit from.

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Q: The intake on my unit is not the same. What should I do?
A: How long has it been since the HEPA filters were changed? If the HEPA filters are very dirty the unit will not circulate air at its normal rate.

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Did You Know...
Ecological Awareness
The Benefits of Humidification
reddot design award winner

AIR-O-SWISS Purifiers and Humidifiers from BONECO – Our Advanced Air Treatment Systems optimizes your indoor air through proper humidification and air purification. BONECO develops and manufactures technologically advanced air treatment systems such as ultrasonic humidifiers, air washers, air purifiers and evaporator humidifiers with exclusive functional design providing healthy room air. We have set new market standards with our digital Ultrasonic Humidifiers and Steam Humidifier – AOS U650, AOS 7135, AOS 7147 & AOS S450. Our AIR-O-SWISS 2055A Air Washer (Humidifier & Purifier) is the next generation with an automatic shut-off. Swiss design and innovation allows us to introduce environmentally friendly products like our refillable demineralization cartridge (DMC) and eco-friendly EZCal Humidifier Cleaner and Descaler. AIR-O-SWISS innovations like our new Ultrasonic Humidifier AOS U200 and Evaporative Humidifier AOS E2441, recipients of the Red Dot Design award, are just a few reasons to trust AIR-O-SWISS.