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Air-O-Swiss 7135 & 7133 Ultrasonic Humidifiers |
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Air-O-Swiss 7135 & 7133 Ultrasonic Humidifiers |
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The Air-O-Swiss ultrasonic humidifiers use high frequency vibrations to emit a fine mist of water into the room
where the mist immediately evaporates. The Air-O-Swiss can be used as a cool mist humidifier during the summer, or as a warm mist humidifier
(pre-heated to 104° F) for dry winter air. This popular humidifier is available in digital (the Air-O-Swiss 7135) or
manual (Air-O-Swiss 7133) models.
**The Air-O-Swiss 7135 humidifier was recently rated the top of its category in home humidifiers.
From hygiene and safety to ease of use and coverage
area, the AOS 7135 ultrasonic humidifier came in as the recommended model for home humidification.
If you have allergies, then you should pay close attention to the humidity in your home. When the
humidity is too high, allergens like mold and dust mites will multiply, but when the humidity is too low,
the air becomes dry and harsh on the sinuses, nose, throat, and skin. The Air-O-Swiss Ultrasonic Humidifier
can generate up to 3.5 gallons of water a day, and it comes with a built-in hygrostat so that you can monitor
the relative humidity level and a humidistat to control the humidity level.
Easy to use and maintain, these humidifiers come with either digital or manual controls and a
removable transparent cover. Operation is a breeze
with digital controls like an LCD display, timer, automatic mode, sleep mode, and indicators that let you
know when it's time to empty or clean the unit. The Air-O-Swiss Ultrasonic Humidifiers are ultra-quiet and do not
consume much power. The included Hydro Stick
provides constant freshness in these humidifiers. The Hydro Stick needs to be replaced only once a year. A
demineralization cartridge, which should be replaced every three
months, prevents mineral residues from contaminating the water.
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Air-O-Swiss 7135 & 7133 Humidifier Specifications |
- Main Voltage: 120 V / 60 Hz
- Power Consumption: 45 W
- Weight: 7.7 lbs (empty)
- Size Dimensions: 15" x 8.7" x 13.8"
- Area Coverage: suitable for rooms up to 650 square feet
- Humidity Output: up to 3.5 gallons a day
- Tank Capacity: 1.75 Gal. (6.5 L)
- Accessories: Hydro Stick and Demineralization cartridge
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Air-O-Swiss 7135 Product Features |
- Dual Mist Capability - ambient temperature vs. 104° F preheated mist
- Modern Design with LCD Display
- Hydro Stick, Ultrasonic Vibrations & Demineralization Cartridge work to capture minerals in the
water before they are dispersed into the air
- Hygrostat & Mist Output Regulator
- Sleep Mode
- 1 - 9 Hr. Timer to allow for Timed Humidification
- Empty & Cleaning Indicators
- Ultra Quiet
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Air-O-Swiss 7133 Product Features |
- Dual Mist Capability - ambient temperature vs. 104° F preheated mist
- Modern Design with easy to use manual control knobs
- Hydro Stick, Ultrasonic Vibrations & Demineralization Cartridge work to capture minerals
in the water before they are dispersed into the air
- Hygrostat & Mist Output Regulator
- Empty Tank Indicator
- Ultra Quiet
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Product Reviews and Questions |
Write A Review
| Read all 19 reviews.
    excellent product
Reviewed by: from Greenwich, Ct

This humidifier is extremely quiet & works really well. It is heavy to fill with water, but I have my husband do it.
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    Pricey But Worth The Money.
Reviewed by: Stuffed Up Nose from Philly, Pa

I tried several cheaper humidifiers thinking that they would get the job done. They don't. Consumer Reports rated this model as the best. It is. Every morning I would wake up with dry mouth and clogged sinuses. After the first night we used this we woke up without the stuffy dryness. Relief at last!
All humidifiers require some form of maintenance and it can get costly. You don't just add water every night and it works perfect. There is demineralization cartridge that needs replacement every 2 to 3 months. It also has a Hydro Stick that you replace yearly. Depending on your water source the unit needs to be cleaned about every 2 weeks. If not mineral deposits will accumulate and blow white dust not harmful into the room.
To clean it you need Ezcal, a sample is provided. You mix this with 32 oz of hot water, scrub with the provided brush then let it sit for 30 minutes. Ezcal is not cheap. A box costs about $8.00 and it contains 3 packets. If you're cleaning every 2 weeks this can add up. The owners manual states you Must Use Ez[clean]. I called customer service. They told me that White Vinegar add 8 ounces to 24 ounces of hot water will work just as good. This is a tremendous cost savings.
Conclusion: This is the best humidifier you can buy. You will appreciate it the first night that you use it. Be prepared to do a little maintenance and you love this product.
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    Great Humidifier
Reviewed by: An allergy/sinus sufferer in a very dry climate from New Mexico

I bought this humidifier because it was one of several doctor-recommended gadgets to own in one of the magazines I trust. I have had several humidifiers before, one when my children were little, and another I bought a couple of years ago. The warm mist feature and the feature that actually measures the humidity in the air and turns it on and off accordingly were the reasons I upgraded to this model from my existing humidifier. This one works almost too well in that I find I am refilling it every 1.5 days in the dry mountain dessert climate here. We are all breathing easier and have not had to use hand lotion since I turned this on. Very glad I splurged on the best model/machine. I also purchased the de-mineralization filter because we have very hard water here.
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Customer Q & A
Q1: Does this have medicine cup, can you use essential oils with this product and does it purify?
A: Neither the AOS 7135 nor the AOS 7133 humidifier has a medicine cup. You should not put anything other than water in the tank as it could possible damage the diaphragm or internal components of the humidifier that nebulize the water. The demineralization cartridge traps hard water minerals like magnesium and calcium but does not "purify" the water as carbon/charcoal based filters do.
Q2: What's sleep mode on the more expensive model?
A: The Sleep mode in the digital Air-O-Swiss humidifiers models functions like this.
When you select it, the humidity automatically targets 50-65% the timer is set to 6 hours the preheat function kicks on, and the display dims.
After six hours, it will shut off.
Q3: Does this have any parts that needs to be replaced and how often?
A: There are two replacement parts - the demineralization cartridge and Hydro stick. The Hydro stick is generally replaced annually, and works to keep the water free of bacteria, germs, etc. The Demineralization cartridge needs to be replaced every 2 weeks to 3 months. This all depends on how hard your water is. If you notice any fine white dust, it's time to replace the cartridge. This is the mineral content in your water, not being removed and being dispersed by the humidifier. To avoid this entirely, you can use distilled water and remove the cartridge altogether.
Read all Q & A
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Air-O-Swiss 7135 Ultrasonic Humidifier
This Air-O-Swiss ultrasonic humidifier uses high-frequency vibrations to turn the water
into a micro-fine mist that creates a comfortable environment in any room. This model provides you a dual option with a
water pre-heating function, when the mist exits the Air-O-Swiss 7135 at a pleasant 104° F, as well as a cool mist option
where the water exits at ambient temperatures. Intelligent Temperature technology monitors the temperature and
automatically adjusts the output when conditions change. These features give this ultrasonic humidifier a range of capabilities
that make it truly unique.
The Air-O-Swiss 7135 and 7133 are virtually identical models. From features to product specifications, these two humidifiers
largely mirror each other. The only real difference between these two models, aside from price, is the controls of each.
With the 7135 Ultrasonic the controls are electronic with a digital readout. With the 7133 Ultrasonic the controls are manual and
adjusted with the use of two knobs. With the digital controls of the AOS 7135 you have an timer and sleep mode feature that the
AOS 7133 lacks. Aside from controls and price, these two humidifiers are identical in performance and capability.
What I like about the Air-O-Swiss 7135 Humidifier
The versatility of this unit makes it one of the best humidifiers available today. Though I generally do not suffer
from sinus problems or dryness year round, the warm or cool mist options are great for any time of year. The capacity is large
enough that I'm not constantly refilling it while I use it, and the weight and size make it ideal for any room in a house or
apartment. The timer mode is an excellent additional feature, and I generally set it to run for the full nine hours before I
go to sleep at night. That means that I don't have to worry about shutting it off in the mornings.
I tested this humidifier in my apartment. The air in my
apartment is very dry which it makes it difficult to get a good
night's sleep. During the winter months, I almost always wake up
with my eyes stinging or with a nose and throat that feels like it's been through a blast furnace. I usually do not like to use
a humidifier in my bedroom, because I am a very light sleeper, but the AOS 7135 was surprisingly quiet. The near silent
operation of the fan did not keep me from falling asleep.
Air-O-Swiss set itself apart from other brands with the combination of three key features: the Hydro Stick, the Ultrasonic Technology,
and the Demineralization Cartridge. The demineralization cartridge acts as a filter to prevent any mineral content found in your water from
being dispersed into the air. This cartridge also helps keep the tank free of mineral build up that is often found in regular humidifier
use.
What I do not like about the Air-O-Swiss 7135 Humidifier
There is not much to dislike about this humidifier. It is one of our best sellers and I did not have any problems
with it during our product testing. If I had to choose one downside to this model, it would be that you have a cartridge to
replace every three months and a Hydro Stick to replace each year. Be it that these two features help keep the
Air-O-Swiss Ultrasonic running smoothly and free of bacteria and viruses, the cost to replace these is relatively minor.
In summary, the Air-O-Swiss 7135 combines simple operation with minimal energy
use and unmatched versatility. The improved system helps keep the tank water clean, hygienic and minimizes fine dust
that is sometimes left by other brands of
ultrasonic humidifiers. The AOS 7135 is near silent, and its sleek design
minimizes its footprint in your bedroom or living area.
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Order by 3 pm EST for fast free same day shipping on orders over $150*.
Federal buyers; please see our humidifiers on GSA Advantage or call 1-800-339-7123 for our GSA website.
1/30/12 The Air-O-Swiss 7144 humidifier has met all of my expectations. This unit performs as advertised. Also, the buying and delivery of this product from AchooAllergy.com was great. More Testimonials
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