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Air-O-Swiss 7131 Ultrasonic Humidifier

DISCONTINUED AIR-O-SWISS 7131 Ultrasonic Cool Mist Humidifiers
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Air O Swiss 7131 Ultrasonic Cool Mist Humidifiers

The Air-O-Swiss 7131 Humidifier has been discontinued. We apologize for the inconvenience. Please see our entire line of Air-O-Swiss Humidifiers for an alternative.

Supplies and Accessories
Availability: Shipping 03/31/2015, reserve now

  • Overview
  • Tech Specs
  • Supplies & Accessories

Description of AIR-O-SWISS Ultrasonic Humidifiers - Model 7131

The Air-O-Swiss Ultrasonic 7131 cool mist humidifier is fast, effective and covers 540 square feet. This ultrasonic humidifier is an energy miser and has a built-in hygrostat for controlling your desired humidity level. The Air-O-Swiss humidifier is virtually silent and has a regulating mist output so you can aim it wherever you please. This is an excellent humidifier from Air-O-Swiss, whom we regard as manufacturing the best humidifiers in the industry.

AIR-O-SWISS Ultrasonic Humidifiers - Model 7131 are ideal for someone who...
  • Suffers from allergies, asthma or sinus pressure and wants a portable cool mist air humidifier free of all common household bacteria, mold and spores that can breed in tap water.
  • Wants to improve the interior of the home through improved air quality.
  • Is looking for a portable humidifier that will fit well for a baby nursery or child's room.
  • Wants a humidifier that can help save on energy bills. The more humid the air, the warmer you feel. If you add humidity to the dry heated air, you can then set your thermostat lower and still feel comfortable.
  • Wants to remove dry air that may damage certain wood furnishings, hardwood floors, wallpaper and houseplants.

Features of AIR-O-SWISS Ultrasonic Humidifiers - Model 7131

  • Hydro Stick provides constant freshness in humidifier
  • Built-in manual hygrostat for controlled humidification
  • Virtually silent operation
  • Mist outlet that can be positioned in any direction
  • Industrial strength titanium membrane surface
  • Auto shut-off with empty indicator
  • Transparent tank
  • Energy saving

Care of:

Cleaning: The tank should be cleaned regularly with water (no detergents) once a week during use. If you are operating the machine with the preheating function, clean every two weeks. Use decalcification agents (see EZCal below) to remove deposits from the fogging chamber (evaporation chamber). Rinse thoroughly and dry. Not recommended to be used with softened water.

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 prevents the build up of mineral residues or white dust and should be replaced every 2-3 months. If the water you are using is very hard, it may be necessary to replace the cartridge more frequently.

See all Air-O-Swiss replacement filters and accessories.

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.


Reports by Experts - AIR-O-SWISS Ultrasonic Humidifiers - Model 7131

Expert Review:    Courtesy of AllergyBuyersClub.com


  • Blue transparent tank makes it easy to indicate when water level is running low.
  • When set on automatic mode the built in hygrostat maintains ideal humidity one desires in relation to room temperature.
  • Ultra-quiet operation (no bubbling or fan noises).
  • Simple design and color fits in well for a baby or child's bedroom.
  • Equipped with a regulating mist output that can be moved a complete 360 degrees.


  • Have to turn the reservoir upside down when filling it, which makes it sometimes an awkward and difficult chore. However the carry handle on top makes it easy to carry back.
  • No warm mist option.
  • Only suitable for a small room.


The 7131 Ultrasonic humidifier is perfect for those seeking a simple, quiet, and easy to use product that will do the job for a small room. Among all of its easy-to-use functions, design and color, the ultrasonic humidifier would fit in perfectly for a baby or child's room. With its built-in hygrostat and regulating mist output, you won't be disappointed with this economically priced unit.


Technical Specifications of AIR-O-SWISS Ultrasonic Humidifiers - Model 7131

AIR-O-SWISS 7131 Ultrasonic Cool Mist Humidifiers
 AIR-O-SWISS 7131 Ultrasonic Humidifiers
Room Coverage 540 sq. ft.
Tank Capacity 1.05 gallons
Humidification Performance Up to 2.5 gallons/24 hours
Auto Shut-Off Yes
Power Supply (Volt, Hertz, Watts) 120 V/ 50 Hz
Weight 8.8 lbs (without water)
Dimensions 12" H x 7.5" W x 15" L
Warranty 3 years


Supplies & Accessories for AIR-O-SWISS Ultrasonic Humidifiers - Model 7131

Annual Kit
Air-O-Swiss Seasonal Replacement Kit AS HU HREPK  $51.97
Replacement kit is packaged to last the season. Includes 2 demineralization cartridges (replace every 2-3 months) and 1 Hydro Cell 2-Pack (replace very 1-2 months).

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Availability: Shipping 03/31/2015, reserve now

Hydro Cells
Replacement Air-O-Swiss Hydro Cell 2-Pack AS HU KHYDRC  $19.99
Place Hydro Cell inside water tank to maintain water freshness. Includes 2 Air-O-Swiss Hydro Cells (replaces Hydro Stick). Replace every 2 months.

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Air-O-Swiss Demineralization Cartridge
Set of 2 Air-O-Swiss Replacement Demineralization Cartridges #AOS 7531 AS HU KCART2  $34.95
2 replacement demineralization cartridges for Air-O-Swiss ultrasonic humidifiers. Replace every 2 months to prevent the release of minerals into the air.

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Availability: Shipping 03/31/2015, reserve now

EZ Cal
EZ Cal Humidifier Cleaner #AOS 7417 AS HU EZK  $29.95
3 Packages of EZCal decalcification cleaner for all AOS units. 3 packets per package for a total of 9 packets. For best results, use 1 packet for 32 oz of water every 2 weeks.

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Availability: Shipping 03/31/2015, reserve now

Annual Kit
Air-O-Swiss Annual Replacement Kit AS HU HANNK  $103.94
Includes 4 demineralization cartridges (replace every 2 - 3 months) and 4 Hydro Cells (replace every 1 - 2 months)

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Availability: Shipping 03/31/2015, reserve now




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