Travel Ultrasonic Humidifier
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  • Price: $48.74

  • Availability: Usually ships in 24 hours Ships from and sold by Amazon.com
Product Details
Binding
Misc.
Brand
Air-O-Swiss
Label
Air-O-Swiss
Publisher
Air-O-Swiss
Studio
Air-O-Swiss
ItemDimensions
Weight:130
PackageDimensions
Height:390
Length:720
Weight:150
Width:640

Editorial Reviews
The Air-O-Swiss Travel Ultrasonic Cool Mist Humidifier 7146 is a high quality travel-size ultrasonic humidifier which is compact enough to take and use anywhere. The efficient ultrasonic technology uses high-frequency vibrations to generate a micro-fine cool mist, which is blown into the room where it evaporates into the air. Just add your own half-liter water bottle, and plug the unit in anywhere in North America or Europe using the included transcontinental travel AC adapter and exchangeable plugs. Stay healthy and be more productive at home, in your dorm room, or at work. Place the AOS 7146 on your desk, in your office, in your hotel room, or anywhere you need quick and easy added moisture.
Customer Reviews

Excellent Portable Humidifer - Scott Mosher on Oct 13, 2009

This unit is the original travel/portable humidifier. I shopped around and looked at the several imitators, but decided to go with the Air-O-Swiss name/reputation that I know and love.

This unit is tiny, and comes with a power adapter with both US and European plugs and a soft cloth carry bag.

I use it at McMurdo Station, Antarctica where the average humidity is in the single digits. It puts out less water than my full-size Air-O-Swiss unit at home, but a remarkable amount for a unit this size.

The blue light that others have complained about is fairly bright - as most blue LEDs are - but it's no brighter than most night-lights, and hasn't bothered my sleep. The blue light switches to a red light when the water runs out... kind of a nice heads-up feature if you don't have the output set high enough to see the "steam" coming from the spout.

Overall, I wouldn't hesitate to make this purchase again, and I'd replace this unit with the same if needed (unless or until Air-O-Swiss comes out with their own new replacement/upgrade). There are a couple other copies that are less expensive, but I haven't tried them - I went with the quality/service that I trusted at the cost of the higher price tag.

Quiet And Compact - A. Horvath "AJH" on Nov 23, 2010

PROs: operates very quietly and very compact - great for travel and personal use by bedside at home. Bottle neck adapter has two (2) size fittings for use with standard plastic bottle. Adapter is very tight inside bottle's neck so water does not leak out. When turned upside down, metal ball stopper is water tight. Fold out 'feet' to mitigate tipping though it may not be sufficient to prevent tipping with larger bottles eg: one liter bottles. Has variable humidity adjustment which works reasonably well too.

CONs: bottle neck adapter fits into inside of bottle mouth - it is not a 'screw on' adapter. A positive about this is that it'll work with standard sized bottles (supports two sizes) however removal and insertion of adapter into bottle neck is VERY tight. Some plastic bottles are very thin walled. Press fitting the adapter can be problematic as bottle's wall may collapse from applied pressure during insertion. Therefore thicker walled plastic is recommended esp. if/when larger bottle is being used. Seniors with limited hand mobility may also find it difficult to manipulate due to tight fit. NOTE: though unit comes with stabilizing pullout feet, filled bottle is simply inserted into receptor - there is nothing to 'clamp' adapter and bottle to hold it in place ergo care should be taken as bottle can be knocked off unit easily. The water tight adapter will prevent the water escaping from the bottle however weight from falling bottle can/might cause damage to surrounding objects.

WARNing: Due to relative ease with which unit might tip, use of glass bottle is not recommended. Use in child's room may also not be recommended.

SUM: at price point and intended use, pros out weigh cons and therefore worthwhile purchase. Had adapter come with rubber 'O' rings for easier insertion and if adapter could have been clamped in more securely, it would have deserved 5 stars. CONs however only earns it 4 stars IMHO.

The Perfect Accessory For Trips To Phoenix Or Riyadh - J. Savani on Aug 30, 2009

After my government issued ID and money, this amazing gadget is the third key thing I would take on a trip to a dry place. After three miserable trips to Phoenix where my eyes were dry and red and I felt tired and miserable, I brought this portable humidifier for the fourth trip (in as many months). What a difference it makes to sleep with the thing lacing the air with balmy droplets of water. I wish I had had it on other trips to other arid places (including, incidentally, Beijing), but also the many arid places in the Middle East, such as Riyadh. I also plan on taking it to any place cold enough to require forced air heating in winter. I really like shoes, but will leave a pair behind to accommodate this humidifier in my usual complement of carry-on baggage. It's that good!

Just Ok - M. Widdop on Feb 16, 2010

I've been using the Air-O-Swiss on my desk at work for a few weeks now. At first I was impressed by how quiet the humidifier ran. I empty the water every night and dry out the parts but the last few times I've used it, there is an annoying hum that comes and goes. For the amount of money I paid for the humidifier I would expect it to be flawless for more than a week. I wouldn't mind if it weren't for the cost.

Cute And Convenient - J. Kao on May 10, 2010

The unit is lightweight and easy to travel with. Like others have noted, there is a slight hum from the motor but not loud enough to bother me. The blue light lights up the entire spout, and can reflect through the entire water bottle which is a bit too bright for me for sleeping (I like to sleep in complete darkness). However, I simply put the humidifier in the hotel bathroom, which comes in handy as a nightlight, and leave the bathroom door open. On a recent trip to Denver I noticed a clear difference in humidity between having it on/off. I have also been using it in my office daily which is quite nice. One water bottle lasts throughout the work day on the medium level. And compared to my full-size Sunbeam cool mist humidifier, it doesn't leave my furniture/carpet all wet. However, like others have noted, some water bottles will not fit (e.g. Dasani makes theirs a little wider) but most do. It would be nice if we could shut off the light. Also I wish the plug on the AC adapter could fold down for ease of transport (I worry about putting it in the same pouch as the unit). However, despite its minor flaws, I still love it and would definitely buy it again!

Great Little Ultrasonic Humidifier! Even Use It At Home - K. Salinger "MBA, RN on Oct 8, 2010

I bought this for travel about a year ago, but find that I use it at home as well despite having 3 full-size humidifers I could use instead.

I have two full size air-o-swiss ultrasonic humidifiers and a vicks ultrasonic at home. However, this unit is so easy to use and takes up such a tiny bit of space that I have been using it at home as well as traveling. My other big units are just collecting dust in the garage now.

Part of the beauty of this unit is how easy it is to fill - you just use one of your empty water bottles. No big heavy container to lug to the sink and hope you don't spill on the way back. In addition, it is super easy to keep clean because it is so tiny. you just need to brush the small chamber where the ultrasonic membrane is located and it comes with a little cleaning brush. The large humidifiers have so many nooks and crannies that they're a real pain to keep clean. Even those with the ionic silver that supposedly retards microbe growth still get gross inside.

I highly recommend this as both a night time at home and travel humidifier. If you live somewhere dry and need a humidifier 24/7,then perhaps it's not the right one for you. But for intermittant use it is perfect!

NOTE: I first tried the similar unit by sunpentown and it had very poor performance so I returned it for this one. Perhaps I just had a bad unit, but based on that experience I cannot recommend the sunpentown unit despite the similar look and size to this one.Sunpentown SU-1051W Travel-Size Personal Humidifier, White

Size Vs. Function - Nimajneb on Jan 4, 2011

Pros: Very small, hardly takes up any space in my 22" Travelpro. Also uses a standard 0.5 Liter water bottle. It works.

Cons: Won't work in a large hotel room. Have to keep in the minimum setting or else it soaks the area in front of it. I basically keep it right on the nightstand on the lowest setting.

Great Travel Humidifier - Thomas J. Raftery on Apr 11, 2010

I used this humidifier for 30 days in a bedroom in the Pyrenees and it worked well. The only problem is that you have to find the correct size water bottle for it. The smaller personal water bottles, half liter, now have openings which are too large for the fitting that comes with the humidifier. After spending twenty minutes or so in a hypermart comparing bottle top sizes I found that the 1.5 liter bottles have the correct opening size. Since the unit recommends a smaller bottle, I simply filled the 1.5 liter bottle half way and it worked like a charm. I emailed the manufacturer to inquire as to an adaptor that would fit the newer sized small bottles and explained the problem, but the response was that there was only one adaptor. I may experiment with lobster claw rubber bands to jury rig the adaptor, but I have not reached that stage yet. Nevertheless it worked as advertised and I was quite pleased with it.

Portable And Easy - Nascar Runner on Dec 16, 2009

I travel for a living and it used to be difficult to find travel humidifiers (my previous one was so difficult and big, it never made a trip). Normally I resort to running a hot, steamy shower to add humidity to a hotel room but that is no longer eco-friendly. However, I bought this after waking up in Breckenride, CO (winter) with my eyelids stuck to my eyeballs and my nose in undescribeable pain. It is expensive, but works like a charm. If you put it on minimum, it will run through the night. If you put it on half strength, it will run out of water in the early am. I got up and refilled, then put on max, and my pillow was slightly damp when I awoke--but that's OK! Easy to clean. I've only used it three days, so I can't testify to it's longevity yet. I would recommend to a friend. Comes with a travel bag and converter plug, with is a nice touch.

Easy, Well Made, And Effective, - Lesanne Coffin "lesa on Oct 11, 2010

I like this little compact humidifer. It is very small, and very well made, and packs easily. The cool mist prevents foggy window syndrome that is generated by warm mist. All you need is to buy a bottle of drinking water. Then just refill with tap water. I used it in Palm Springs, and in Redlands in the heat of the summer. I slept better and found my nose still breathing by morning. I had had a severe nose bleed, so my doctor told me to always have humifier with me. This serves my travel needs when I leave the beach. There is no damage to furniture, no wet marks, no trace left behind.

Bright Product. Too Bright. - Petro "Petro" on Sep 20, 2011

This is a nice little humidifier, and with two modifications would be almost perfect for it's niche. Well, three, but I can't really blame the company too much for the third issue.

First off, this product works well. I use it with a 600ml bottle because we didn't have any 500ml bottles, and it worked fine. We generally run it at full steam (no, it's not steam, but you get the idea) for about an hour before bed to pre-humidify the room, then refill the bottle and run it at slightly less than half power. This lets the bottle run most or all of the night. It does keep the room humid enough for our needs--it's a bit big for a standard sized bedroom (well, before the McMansion craze), so in a smaller room it might work even better.

However:

* There is a blue "I'm running" LED. This LED is WAY TOO BRIGHT for something that is to be used while sleeping. Seriously. Most studies sleep studies show that the darker the room the better you sleep. This thing is almost bright enough to read my kindle by.

* As the water runs out the hum gets a little louder and a red light goes on. (the blue goes off). This is really stupid. The machine is smart enough to know when it's running out of water, but not smart enough to just shut itself down (at least IME, the louder buzzing wakes me up and I shut it off). It's kinda like our politicians, smart enough to realize we're in trouble, too in love with their own agendas to do the right thing.

* This is supposed to be a travel device, and I guess the included plugs work where they say they do, but it would have been nice to include an Australian plug. Not that I blame the company for this, it just would have been nice.

To work around the too-bright-light issue I tried to paint it with some of my wife's fingernail polish. I may try another coat or two as the first coat helped a lot. I may also try wrapping the thing in Duct Tape.

Tiny And Works Great. Bright Light Fixed! - Ron Clark on Jan 30, 2011

Out of the box this thing is very small. I actually bought it to replace my malfunctioning Air-O-Swiss 7135. (I also had just returned from a skiing trip where I had trouble sleeping due to the dry air in the hotel room.) I already had a small used water bottle, so I washed it well and filled it with water from my Brita pitcher. The insert that is supposed to fit tightly into the top of the bottle does fit well, and is not so difficult to insert as some here have said. Give it a slight twist as you insert or remove.

Upon operating, I see that it puts out quite a bit of water mist, and it is very quiet. I really can't imagine it being any more quiet. The only issue I confirmed that other reviews have said is that the tiny little LED bulb inside makes the unit glow very bright. I have uploaded some photos of the unit operating in a very dark room, and you can see that it lights up the corner of the room. If you have any issue with anything but near complete darkness when sleeping then this will surely be a problem. I fixed this by simply putting several coats of black acrylic paint on the bulb. I put up photos of a closeup of this as well. (Originally I planned on maybe taking the unit apart and just cutting the wires to the bulb, but there are no screws to be found on the outside.) So, the reason I didn't give this 5 stars is because I had to do this. There really should be an option to turn the light off. I understand that part of the reason it is there is because the light turns red when the water runs out. I really don't see that this is necessary for my use because I only run it for 6-8 hours overnight and running on high it still doesn't run out of water. I just fill it up each night before bed.

On another note, some reviewers complain that it doesn't do much to raise the overall humidity levels in the room. Well, I would say what do you expect from a travel sized unit? That being said, I just set it on my night stand and point it toward the bed. Why would I care if the other side of the room gets humid? My sleep has greatly improved!

If it ever malfunctions in the future I will update this review.

Broken Right Of Box - K. O'Toole "R teest" on Nov 8, 2010

Bought this because of the positive reviews but unfortunately I got one of the lemons. After setting it up and filling it with water I could not get it produce any vapor, mist, humidity of any kind. After doing a little trouble shooting I discovered the miniature fan that circulates the mist was not working. I called the manufacturer and was put off by them wanting me to pay the shipping charges to return their defective product. I decided since it was ordered through Amazon to send it back to them. They have an excellent return policy.

No Mist After 7 Night's Use - Hongjen Lang "hj" on Jul 7, 2011

Just bought this on 06/25/2011, arrived on 06/29, began use on 07/01 and tonight just after cleaned it out and turned it on....no mist at all, just the blue light. My previous one was the Crane Penguin humidifier which was bought in MARCH 2011 (THROUGH amazon TOO) and also quit producing mist in June, Boy, I thought I was just the unlucky ones, apparently there's some design problem with this type of product.
And there seems no tech help out there... anybody?? Thanks in advance

Horribly Cheap Quality And Won't Fix - Chris Cameron on Jun 16, 2011

Do not buy this item. I ran it for two months after purchasing and it stopped working all together. No power, nothing. This thing should have worked for years not two months. I recommend avoiding this at all costs. Looking at it the build quality is very cheap and costs way too much for what it is. You can get a better quality humidifier at Wal-mart. If there was a zero start option I would have chosen it!

Two Small Complaints - Gerald A Fontejon on Apr 19, 2011

My two small complaints: 1) makes more noise that I would have expected (this is my first humidifier), 2) blue light (wish I could turn it off). Besides those two complaints, this gadget is awesome, though, I do wish it was optional battery power, since it would make more sense being a traveler humidifier. I believe in the KISS approach, and one less thing to connect to the wall would be great. I have noticed a better quality of air when I do sleep, which is welcoming. The use of a 500ml water bottle is ingenious.

Bright Light - Belle on Jan 23, 2011

My husband works on location and wanted a portable humidifier. I got him this one and he loves it. The only downfall is there is a Bright Blue light that illuminates the room while sleeping.

Great For Traveling - F. Ruiz on Oct 14, 2010

I love my humidifier! I moved to Russia for work and I had to buy a humidifier because my room got extra dry when the heater was on. And I had to have the heater on, otherwise I would freeze at nite. This humidifier has made my nights more pleasant, keeping my room fresh and specially not dry anymore. The humidifier is silent and the part I like the most is that it's small in size and easy to transport. You don't have to worry about carrying the water container or breaking it while traveling. You can just get a half liter bottle of coke and use it as your water container.

Small And Handy - K. Soreano "cryptozo on Mar 22, 2010

I travel for business to very dry areas. This is small and light enough to fit in my luggage. Its not very strong, but on my first trip to Las Vegas, it did a fine job in a medium size hotel room on high setting. Its perfect for my small enclosed office on low setting.
I was surprised by a couple of things. Ignorantly, I'd never seen a cool mist humidifier and I now prefer it. The blue light wasn't small; it lights up the entire spout.

Compact And Effective - G. Dunham on Mar 11, 2010

This is a great little humidifier. Fits in suitcase and on desktop. Nice that any water bottle connects. Easy to refill.

Failure At 10 Days - Mike Monnin on Jan 14, 2011

I had the unit for 10 days when it stopped working (fan continued to blow, lights worked, but ultrasonic generator produced no water mist).

When it worked initially it was great. Went with the large Aquifina bottle for 1.5 days of operation before refill.

Light was ANNOYING! Way too bright.

Bottom line is the product failed to operate in less than 2 weeks and is going back to Amazon for a full refund.

Having Problems With Odor - Jackie H. on Jul 7, 2011

I have a sensitive nose, and while this unit does send humidity into our bedroom, despite using a purified water and
keeping this as clean as I can, I am smelling a mildew type smell coming from the unit after about a months use. The smell is
bad enough that I have stopped using the unit. If anyone has suggestions on how I can remedy this, I would appreciate it.

The Very Bright Light Issue - Nigell123 on May 7, 2011

I don't have an issue with the excellence of the product as an humidifier. Unfortunately, the designer chose also to make it a very bright night light. It's piercing blue, and if it's used at the side of the bed it can make sleep impossible for me. There are solutions - such as eye masks, and an early one of mine which was to wrap it up in black electrical tape. My real problem is why the design team were so excited about adding this light, which has no function other than to look kind of cool and yet at the same time make it very difficult to use for it's intended purpose. A real shame. At the moment I'm considering opening up the base and seeing if I can disable the light. If anyone has managed it, please do put the information up here.

Great Travel Device - Jim26 on Feb 2, 2011

Perfect for setting next to your bed when you travel. Although it can be a bit bright sometimes, and go through water bottles quickly if it is on high.

Travel Humidifier - Candice on Jan 26, 2011

I stay in a hotel at least 300 nights in a year and have terrible allergies. I just broke down and bought this due to the forced heat that I have in my hotel room on the east coast and so far so good! The air in hotels tends to be very dry and I notice that when I sleep, I wake up with chapped lips, dry throat blah blah blah. Back to the product... Mine didnt come with an instruction manual... reason to maybe knock off a star... but there were some pictures on the side of the box that had some numbers (no words though) and even a brainless tech-a-phobe girl such as myself was able to figure it out. It took all of about 30 seconds to set it up... It would probably have taken more time to read the non existent instruction manual versus the caveman drawings on the box.. I figure that alone earns back the star and then some. Its got a nifty little travel bag... one feature about this little pouch that I love is that there is a tag inside that has the brand name on it. Why is this important? It differentiates this little black storage pouch from the one for my travel headphones, my travel steamer and my travel router!
The light is bright as others have said and may in fact give me nightmares tonight about bluelight specials but Im pretty sure that some advil pm will take care of that issue. Plus, you can see the bubbles and the vapor coming out... kind of trippy and fun if you like that sort of thing.

Overall, unless the thing implodes while I am sleeping, Im pretty happy with it.

Very Cute Humidifer And It Works Well - Totoro on Sep 12, 2010

I saw it on "InStyle" magazine and ordered it right away for my office, where the air is very dry. I have been using it for the past month, and absolutely loved it. It's light and small enough to be packed for travel. I will bring it with me next time if I travel to a dry area. If you look for a compact humidifier, this is a good choice for sure.

Pretty Good For A Travel Unit - Solandri on Sep 23, 2011

I mainly wanted to address the noise issue some of the other reviewers have brought up. Mine did get noisier over a period of weeks. However, a couple nights ago I was cleaning it out and vigorously shook it upside-down to empty all the water out of it. To my surprise, it was as quiet as new when I plugged it back in (which is to say, nearly silent). So the noise is definitely coming from a part inside that isn't as tight as it could be. I'll probably take it apart to seal it down once the warranty is expired. So far, shaking it about once a week seems to be keeping it quiet.

Other than the noise, I knocked off a star for a couple additional reasons:
- It doesn't generate enough mist to really humidify a moderately large room. My bedroom is 20'x20' and it simply isn't powerful enough to raise the entire room's humidity to what I'd consider comfortable. The same for a typical hotel room. I ended up putting it on my headboard so the mist falls over me as I sleep. In a hotel I'll put it on the nightstand next to the bed pointing at me; rather than on the dresser.
- At full power it'll empty a 1/2 liter bottle in about 5-6 hours. That isn't enough for a full night's sleep. While the misting does shut off on its own (and the LED turns red), the motor keeps spinning. I was a little worried that might damage the unit long-term since the misting helps cool the water and the unit. I eventually found a larger 1 liter bottle whose mouth fit the cap, but most of the larger-than-1/2-liter bottles I tried didn't fit.

But don't be dissuaded. If you need a portable humidifier for travel, this is a good unit which, while it might not completely humidify the room, will at least take the edge off if you're in a dry climate. Be sure to clean it regularly or some discoloration will build up which doesn't seem to want to scrape off. I use an electric toothbrush with an old bristle head for the base. The included brush is pretty much the only way to clean inside the cap though.

Fantastic. - Jennifer E. Gerbi on Dec 12, 2011

This.. freaking rules. I'm using it all the time as my bedroom humidifier now that I"ve used it on a trip. It is very portable, but the key is: YOU DO NOT NEED TO CLEAN IT.

I can't emphasize this enough. Take out the water bottle, empty the remaining water in the device, and let it dry. Done. (If you don't use filtered water, maybe there will be scale you need to clean.) Even if you do need to clean it for whatever reason, all areas are easily accessible.

I was willing to pay 400 bucks for an easily cleanable humidifier. I cannot find one. This is perfect. The output isn't huge, though- it will not humidify a large room- but it's so cheap, purchasing multiples is definitely realistic.

I use a dasani bottle, which I clean out with soap every few days, and brita filtered water, and it works great.

Very happy to be able to leave a good review for something, finally. :)

Fantasic And Fun - Dave Pinke on Dec 24, 2010

Just bought this humidifier as I've been feeling sluggish and have had a stuffy nose and dry skin since winter hit. In addition, I do a lot of traveling and thought it would be perfect for that. So far it has exceeded my expectations. Its incredibly quiet, if not actually a nice peaceful sound. It goes though, on the highest setting, a .5 liter bottle of water in 4 or 5 hours, and I've been putting in some Vicks/Olbas oil and have found that it diffuses it incredibly well.

Cleanup is very simple, there are no filters or anything, and mostly its just about slapping on a new water bottle and you're ready to go. The slide out feet are great and help stabilize the unit when a bottle of water is in it, but for the most part its very well balanced on a flat surface. I like to put the unit on a small towel as running it for hours can leave damp spots which could damage wood.

In addition, it simply looks cool!

UDPATE: Just bought another one of these units for my office. After not using it for one night in my dry brooklyn apartment, I woke up with a sore throat and stuffed nose. Now that I'm using it all the time I feel better and seem to have kicked the winter perma-cold.

Great But Light Is Too Bright - D. Mulligan on Dec 16, 2010

This is perfect for travel or on a night stand, but the light is way too bright. It keeps me up at night and I've tried to pull something over the dispenser flap but in doing so it collapses.

Perfect For Traveling - Bob on Sep 5, 2010

I travel a lot and so many hotel rooms to not have opening windows, this product has made my traveling so much more pleasant, easy to use, easy to pack, great product

Works Great So Far, Just Got A While Ago - R. Harry on Apr 15, 2010

I would like to say that the unit is as described and though my bf using for short time is only, very pleased with it.

Had To Replace 1st One Sent. New One Works- But Does It? - 132456sam on Nov 8, 2010

I purchased this product due to the excellent experience I've had with the Air-o-swiss 7135. On my initial purchase water flowed into the device but it did produce any air vapor. Even though water flowed into chamber, Light never turned from red to blue. Replacement unit seemingly works fine. Mist flows quite appreciably from nozzle. However after running through 1/2 bottle it did not change the humidity on a humidifier place in proximity (20%). In contrast the 7135 placed across the room typically increases humidity from 20% to 40%. I'd be curious if anyone else actually measured humidity change.

Measurable Increase In Humidity - Jeff on Jan 13, 2012

I got this for my office. I have a digital thermometer that has the humidity as well, and my office was reading a constant 16% humidity. I took a chance on this humidifier because I needed something that was easy to fill in the bathroom at work, and this uses a 16 oz water bottle. The digital thermometer sits right in front of me, under my monitor, and I set the Air-O-Swiss up just to my left, about 2 to 3 feet away.

This is day two, and the humidity is currently at 26%, which the thermometer says is "OK". It's also still slowly inching its way up, and I'd like it to get to around 34%, but that may be asking too much. Still, a 10% increase in humidity in my 10'x12' office with the door open is pretty good.

Works 3 Days Leaks. - BOB on Jan 6, 2012

If you turn this off. You have to remove water. Or it leaks. First day it works fine. 2nd day the fan would not start. Moved fan with paper clip. Ran 2nd day but lower mist. 3rd day dump water. Installed new water. fan stoped again. Used paper clip. Fan started but no mist. Will take it back to store for refund.

Leaked - KCreader on Nov 28, 2011

Followed the operating instructions, set it up with a bottle of water, and left it on the bathroom counter. Came back a couple hours later to move it to the bedroom, and it was sitting in a puddle of water. Thinking I might have misunderstood the directions, I had my husband, who is more mechanically inclined, check it over the next day. This time we turned it on. It did produce mist -- for an hour or so. After that no mist was coming out, even though there was plenty of water in the reservoir. And it again had leaked. Worthless. Unfortunately, I bought it last spring and didn't try it out then, so am out the money.

Nice Little Humi-didi-fier - MT Nester on Nov 9, 2011

I bought this last November to use in my office at work because it gets pretty dry during the winter and spring months (Tucson, Az). Since getting the little Air-O-Swiss Travel Ultrasonic Humidifier (TUH) I run it for 9+ hours a day 5 days per week between mid October and early June. I notice a positive difference in my breathing and how my nose feels during the work day. There is less static electricity in my clothing, and I feel that my skin gets less dry.

I'm using a 20 oz Dasani bottle and tap water which usually lasts about 12-15 hours with the fan set to about 50%. I really like the blue light and the cloud of cool mist that the humidifier puts out. I don't hear anything from the TUH over the fans in my computer, but in a silent room you would probably hear a small amount of fan noise if you were near the unit. Very occasionally there is the small water drop sound or little splash - a pleasant sound which I hardly even notice anymore. Overall the TUH is pretty quiet. I clean off a small amount of accumulated mineral scale with the included scraper/brush about every other month.

The TUH has outlasted two similar units from a different manufacturer that I got at a local drug store (same price). My Air-O-Swiss has been trouble free and attracts a fair amount of attention from co-workers. I know of at least one other person here that has bought one, and she likes hers as well. If yours is DOA or has problems, I'm pretty sure that Amazon will make it good.

Winter Travel Must Have - EGR on Aug 13, 2011

If I travel in the winter I always take this. Doesn't matter if I'm staying in a hotel or a private home. I can't sleep if the air is too dry. I just pack it in my suitcase and buy a bottle of water later. It really helps.

Excellant Product - Richard H Hoffman on Jul 8, 2011

This is an excellent product, especially if you frequently stay in motels. It works well, is quiet, and the blue light functions as a nightlight. I've used it for a month or so now and it really works

Great Product - V. DeLong "DeLong199 on Jun 5, 2011

This product is great. Keeps a small room comfortable.
I have used larger water bottles with good success. Great for travel. Very compact.

You can see the specs at: [...]

The only con would be the bright blue light while the base is in operation.

Quiet Operation - Corky on Mar 26, 2011

I cannot take much noise. I first bought something similar from CVS and could not tollerate that mechanical humming coming from the machine. When I turned this one on, I was just relieved. It's a well made product and it does the job of adding humidity to a small area without reminding you that the machine is operating.

Great, Portable Humidifier - Kerry C. Barnhart "k on Mar 25, 2011

I originally saw this in Zermatt, Switzerland and thought it would be great for my little girl. I found it on Amazon at a good price and it included multiple adapters for international travel. My daughter loves the blue light it produces and uses as a nightlight - also makes a fine humidifier!

Awesome Travel Humidifier - Carolyn on Mar 17, 2011

I just got this awesome humidifier 10 minutes ago and felt a need to give it a review right away!

The unit is very tiny and sleek. It takes up very little space on my office desk and I set up in 30 seconds without even looking at the instructions.

I could feel the difference of the humidity level in my office within the 1st hour.

The best part is it comes with a European plug and a travel pouch so I can travel with this mini humidifier.

Great When It Works - Anonymous on Jan 24, 2012

I originally purchased one of these units in late April of 2011. After three months, the first unit's ultrasonic transducer failed or the mechanism used to turn it on when there is water in the unit failed. The warranty replacement unit has been working well until the last month or so when the fan started to make a little noise. The fan died overnight last night. I use the unit about 3 days a week, every other week. I am hoping that Air-o-Swiss will replace the second unit under warranty as well. Their warranty department requires you to pay shipping, so if they take the second one back, total cost is closer to $70 at this point for less than one year of ownership. It would be a really nice unit if I didn't keep having reliability issues.

When it is working:

Pros:
1) Relatively quiet
2) Puts out enough moisture to stop nose bleeds and sore throat in a Las Vegas hotel room
3) Small size

Cons:
1) The blue LED is too bright in my opinion
2) When the unit runs out of water, it will sometimes rapidly cycle between running and not running. When this happens, the LED cycles between blue and red. This has woken me up when I forgot to refill the unit before going to bed.

Excellent Product - Carole B. on Jan 22, 2012

I happened to come across an advertisement, and I wondered whether a humidifier might help with some things that were bothering me. Especially a humidifier that I could bring to wherever I lay my head. I want to thank all of you whose reviews encouraged me and gave me "tips" for using this product.

One night of sleeping near this efficient little guy, and I felt like a new person. The good effects seem to last all day: no dry, clenched throat and coughing spells. You wouldn't think it, because all I can see - as soon as I turn it on - is a small puff of very fine mist. (I only turn it on from about the six o'clock to the nine o"clock position).

I'm refilling a strong plastic half-liter bottle from a gallon of distilled water, which is recommended to eliminate mineral dust from the mist. Lasts all night, usually. Seven refills per gallon. There is only one attachment provided for the bottle, and you have to use a little strength to twist it into the bottle opening. Not all small bottle openings are the same size; the instructions specify using a PET bottle. Mine is recyclable #1, "PETE."

The blue light doesn't bother me, I sleep with a night light anyway. You probably wouldn't want it in your face in a dark room, as the light at the bottom of the reservoir lights up half the top of the apparatus. Mine is 4-5 feet away; it doesn't have to be "in your face" to be helpful. It makes watery noises now and then: gurgles, drips, gulps.

It comes with two pull-out feet on the bottle side to hold it steady. The whole affair is plastic, though, and it's my opinion that it skids easily, so I position mine on a small piece of non-skid material. You wouldn't want to tip it over, as the reservoir holds a little water. The bottle is watertight when the fitting is attached, but occasionally drips a little as it's removed from the humidifier. Generally speaking, it's a very quiet, watertight operation. I think you should try it!

Never Worked - dc on Jan 22, 2012

I tried everything I could to get it to work and it never did. I returned it and ordered the knock-off version, which costs $15 less and works great.

Perfect For Travel - K. Wallick on Dec 26, 2011

I am in absolute love with my Air O Swiss humidifiers at home. I love that I can take the same quality with me when I'm away.

An Absolute Great Product - evv_brewer on Dec 23, 2011

This product went on a European vacation and was instrumental in making the trip enjoyable. I put the product on the bedside table at night on its lowest setting and the water lasted 6+ hours. When I woke in the morning, I could breathe without any issues concerning dry air and lack of humidity.

Pros:
easy to set up and use
comes with international plugs - no voltage converter or other adapters needed
comes with carrying satchel
light weight
easy to dry and clean for morning luggage packing

Cons:
light might be bright for some (not an issue for me)
seems a bit pricey, but so does a gallon of milk these days

Overall Impression:
It is now a permanent part of the luggage and will go everywhere I do in the future.

Big Help And Easy Travel - sch617 on Dec 22, 2011

Excellent product, especially if you travel and find yourself in extremely dry states. Worth the price and convenient for home and/or office.

Outstanding Little Steam Machine - Hard Man on Dec 16, 2011

Great little steam machine for traveling. I love the small size for lightweight packing and also love the performance of the steamer.
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