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Air-O-Swiss AOS S450 Steam Humidifier

Air-O-Swiss S450 Steam Humidifier

Model: AOS S450 | SKU: ai3317
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  • Product Overview

    Fight aggravating dry air symptoms and breathe easier this winter with the innovative new Air-O-Swiss S450 Humidifier. This hot steam humidifier infuses 3.5 gallons of clean soothing moisture into your space each day, helping relieve dry nasal passages, itchy dry skin, scratchy throats, and more. Using vaporizing technology, the S450 humidifier heats water to a boiling point and creates a warm therapeutic mist that blankets up to 860 square feet. It's equipped with digital touch controls, an onboard hygrostat, multiple operating modes, and numerous convenience features. Plus, unlike most conventional humidifiers, the S450 achieves whole room humidity coverage even while sitting on the floor. This gives you many more flexible placement options in your space.

    Comforting Steam Moisture Tailored to Your Needs

    Engineered in Switzerland, the Air-O-Swiss AOS S450 Humidifier features a variety of high-tech features that customize operation to fit your needs. Use the onboard hygrostat to set your desired humidity level and choose from 3 operating modes and 3 output levels. Choose Auto mode for convenient automatic humidity control, ECON mode for the most efficient and energy-saving operation, and Manual mode for complete control over your set humidity level and speed. Once your room reaches your desired humidity, the humidifier automatically shuts off and runs intermittently to maintain your setting while saving valuable energy.

    Whole Room Coverage Even From the Floor

    The Air-O-Swiss S450 is one of the only portable room humidifiers that can be placed on the floor while still maintaining whole room humidity coverage. Most conventional room humidifiers work best when placed on a tabletop or countertop. This is because mist released from a higher center of gravity has a better chance of achieving whole room coverage. In contrast, the S450 has a lower center of gravity and the power to reach whole room coverage whether it's placed on a table or floor.

    Hypoallergenic Mist That's Great for Allergy-Sufferers

    The S450 steam humidifier is a great choice if you suffer from allergies because it's hypoallergenic and germ-free. During operation, the humidifier heats water to a boiling point, killing bacteria, allergens, and minerals in the process. Vaporizing technology creates cleaner moisture and stops allergens and germs from being released into your air to eventually make their way into your lungs. Plus, the S450's integrated mineral pad absorbs minerals and hard water deposits to prevent the formation of white dust, which could aggravate existing respiratory problems.

    Additional Features

    • ClearMist Technology - Ensures mist remains warm to the touch, not boiling. This is especially beneficial if you're using the humidifier around children or pets.
    • Digital Touch Panel - Maintain precise control over your settings with the digital touch panel.
    • Display Dimmer - Dim the bright lights of the control panel so you can sleep easier with one touch.
    • Anti-Mineral Pad - An integrated mineral pad absorbs and prevents lime buildup to make cleaning faster and easier.
    • 9-Hour Timer - Program the humidifier to turn on or off up to 9 hours in advance.
    • Removable Tank with Handles - The removable tank features integrated handles for an easier time filling.
    • Empty and Cleaning Indicators - The convenient empty indicator shuts off the humidifier and lets you know when it's time to refill the tank. The cleaning indicator reminds you when it's time to clean the tank to maintain hygienic operation.
    • Decalcification Mode - The humidifier virtually does the cleaning work for you with the convenient decalcification mode.
    • Fragrance Container - Add your favorite fragrance to lightly freshen your air or drop in respiratory medication to further ease your symptoms.
    • Quiet Operation - Hot steam humidifiers are among the quietest humidifiers on the market. The S450 operates at a whisper-quiet 35 decibels.


    Germ-free and allergy-friendly, the Air-O-Swiss S450 Steam Humidifier blankets your space with warm soothing moisture covering up to 860 square feet.

    What Customers Love

    • Sits on the Floor - Place the humidifier on the floor or a tabletop and get the same level of moisture coverage.
    • Flat Bottom Tank - The humidifier's tank features a flat bottom for stable placement in a sink when filling.

    Things To Consider

    • Replace Anti-Mineral Pads - Depending on the hardness of your water, you'll need to replace the anti-mineral pad every 2 to 4 weeks.
    • Descaling and Cleaning - Use Air-O-Swiss EZCal or EZCal Pro when running the unit in decalcification mode.

    Manufacturer's Warranty

    3-Year-Limited Warranty

    Manufacturer's Literature

    User's Manual for the Air-O-Swiss S450 Steam Humidifier.
    User's Manual for the Air-O-Swiss S450 Steam Humidifier.

    What's In The Box?

    • Air-O-Swiss AOS S450 Steam Humidifier
    • Anti-Mineral Pad
    • User Manual

    View All Humidifiers »
  • Specifications

    Humidifier TechnologyVaporizer
    Type of HumidifierWarm Mist
    Coverage Area860 sq. ft.
    Ideal ForSingle Room
    Height13.2 in.
    Width9.5 in.
    Depth14 in.
    Weight10 lbs.
    Moisture Output Per Day3.5 gallons
    Water Reservoir Capacity2 gallons
    Fill TypeRemovable Reservoir
    Water Refill IndicatorYes
    Humidistat Yes
    Humidity DisplayYes
    Mist Output ControlYes
    Programmable TimerYes
    Wick FilterNo
    Air FiltrationNo
    Germ ProtectionNo
    Demineralization CartridgeYes
    Medicine CupNo
    Automatic Safety ShutoffYes
    Maximum Noise Level35 dB
    Maximum Wattage480 W
    Voltage110-120 V
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