
Quietest humidifier
- Near-silent operation
- Hygrometer, LCD readout and antimicrobial silver stick
- Low maintenance
- Awkward to refill
- Occasionally gives inaccurate humidity readings
- Produces white dust if run with softened water
Both professional reviewers and owners praise the Air-O-Swiss Ultrasonic 7135 humidifier for its ultra-quiet operation, solid construction and advanced features. It outputs up to 3.5 gallons per day and is rated for room sizes up to 650 square feet. The tank holds 2 gallons of water. This model produces either warm or cool mist and comes with a hygrometer and digital LCD display that allows users to preset and control the humidity. An ionic silver stick prevents bacterial growth, and a demineralization cartridge helps minimize white dust. However, reviewers note that softened water will produce dust, and distilled water may be necessary to eliminate the problem. Some owners also complain that the humidity readings are inaccurate and that the tank is cumbersome to refill. Still, this Air-O-Swiss model leads its class because of its high quality. If you don't want to spend so much, the cool-mist Kenmore 15408 (*Est. $110) gets good reviews and provides coverage for a larger area, but it is louder.
The most useful review we found for the Air-O-Swiss Ultrasonic 7135 humidifier is a professional evaluation from AllergyBuyersClub.com, which provides a comparative rating as well as short appraisals of its basic features, cleaning needs and parts. There are also detailed lists of the humidifier's features and specifications. About 150 reviews posted on Amazon.com are the best source of owner feedback we found. Buzzillions only has one owner review at this time.
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Our Sources
The Air-O-Swiss 7135 receives the "category winner" recommendation from this retail site, where a professional review gives it the highest possible rating based on its near-silent operation, modern design and high-end features. However this website also sells humidifiers, so its ratings should be taken with a grain of salt.
Review: AIR-O-SWISS Ultrasonic Humidifiers - Model 7135 - Our Best Rated and Most Reliable Humidifier, Editors of AllergyBuyersClub.com
2. Amazon.com
More than 150 owners posting Amazon.com user reviews give the Air-O-Swiss 7135 an above-average consensus rating for being quiet, well-built and easy to preset and monitor, though some complain of white dust output.
Review: Air-O-Swiss AOS Ultrasonic Humidifier -- 7135, Contributors to Amazon.com
At the time of our visit, only one owner has posted a very short review of the Air-O-Swiss 7135. Because additional owners may post at any time, it could be worth checking back with this website for updates.
Review: Air-O-Swiss AOS-7135 Ultrasonic Humidifier by Plaston, Contributors to Epinions.com
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