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The Ultrasonic Humidifier: Protecting Your Home and Health

Updated on July 1, 2018
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I have been researching and writing about consumer electronics for over 12 years.

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Keep Your Home Comfortable with an Ultrasonic Humidifier

Dry air isn't ideal. Moisture is needed for optimal respiratory track and skin health. A small, portable ultrasonic humidifier can be an affordable way of keeping adequate moisture in your home or office.

On this page you can learn a bit more about ultrasonic humidifiers, some of their advantages, their features, tips on caring for and using them, as well as some pointers for selecting the right one.

The Advantages

So why consider an ultrasonic humidifier?

  1. An ultrasonic humidifier like most humidifiers can help maintain a comfortable moisture level in the air when you're in a more arid environment or battling the dryness of winter air in a heated home. They can reduce some of the nuisances of a dry nose, chapped lips, dry, itchy skin, sore throats, and so forth. They can even help reduce sinus irritation, coughing, and congestion as well as cold, flu, and allergy symptoms.
  2. Humidifiers can also help protect wood furniture, wood trim work, and musical instruments from damage due to excessively dry air.
  3. Ultrasonic humidifiers in particular offer quiet operation, energy, and cost efficiency. They produce small droplets in a cool mist versus the heated steam produced by other appliances. They are a particularly good choice in a warm environment but some offer a heated function which helps in a cooler environment.

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Care and Cleaning

  1. Proper setup
    Ideally, portable ultrasonic humidifiers should be elevated to assure there is no accumulation of moisture on the floor nearby. This allows the micro-droplets to evaporate into the air properly. The mist should be directed away from furniture and walls as well and the unit should be at least 6" from any wall.

    It is best to place it on a level waterproof surface such as plastic, vinyl, glass or something like that vs. wood or carpeting.

    Be aware of the cord. Don't allow it to reach across a walkway and create a tripping hazard.
  2. Proper Use
    For those who want to assure microbes are not released into the air, cleaning is critical. However, to help eliminate the release of impurities (due to minerals in hard water) an extra precaution would be to use distilled or demineralized water rather than tap water. This will potentially extend the life of the appliance and will reduce the workload of any filter.
  3. Proper maintenance
    Ultrasonic humidifiers don't require a lot of maintenance but it's wise to keep them clean to prolong their life and assure that bacteria doesn't form. Bacteria can form in any humidifier but proper cleaning, generally with a vinegar (or perhaps bleach or chlorine) and water solution is sufficient.

    Users should read manufacturer's instruction, but typically, the solution is poured into the tank and basin, left to sit for 20 to 30 minutes, emptied, rinsed, and then dried on a weekly basis.

    Keeping a functional filter on the humidifier is also important. Rinsing them as directed can extend their life. However, you may eventually need to replace it which typically can be done by ordering the filter part through the original manufacturer. Read the instruction for your particular unit to assure you know their recommendations regarding this. Most ultrasonic humidifiers have demineralization cartridges vs. filters but they also need to be cleaned and replaced periodically.

    If you are discontinuing use of the humidifier for a period of time, clean and dry it thoroughly, and store it in a dry location until ready for its next use.

Buying Tips

When choosing an ultrasonic humidifier, consumers should compare:

  1. Capacity and output
    Some humidifiers may have a 1-gallon capacity and others may have three or four times that amount. The manual may state that it can disperse 2 gallons or more per day or it may say that it will run for 8, 10, or 12 hours. Clearly, you will want to know how often it will need to be refilled. For most people, it's desirable for the unit to run continuously throughout the night without needing to be refilled.

    Know the size of the area you need to humidify (square footage) and match it to the unit's capability. While you certainly want it to humidify adequately, overdoing it can result in unwanted condensation or even mold growth. It's good to periodically check humidity levels in the room.
  2. Auto Shut-Off
    Some units will display a red light when the tank is empty while others may shut off altogether. For units that use heat, it can be important to have a safety shut off so that it doesn't overheat.
  3. Variable Moisture Control
    Some units have a high and low setting, allowing the user to increase or decrease output based on their environment and their needs. Some units also allow you to adjust the direction of the mist.

    Humidity controls like a humidistat are rare on portable models. These allow the user to set the desired level of humidity and the unit cycles on/off based on the humidity in the air. Timers are also used occasionally.
  4. Heated Mist
    Most ultrasonic humidifiers put out a cool mist. Some may also offer the option of a heated mist. In general, any type of heated humidifier is best used in a colder environment and will consume more energy.
  5. Filters
    Occasionally these portable humidifiers also offer filters/cartridges to eliminate impurities from being released into the air. This obviously adds a step to the cleaning process and a potential ongoing cost but can be worthwhile for many people.
  6. Noise
    Some units will indicate their noise levels. Anything under 50dB is probably quite reasonable.
  7. Ease of Clean Up
    Is the tank easy to remove for the purposes of filling and clean up? Are there many nooks and crannies to clean? How easy is it to access any filters or cartridges?
  8. Other Features
    Some of these units will have night lights, the ability to add oils for aromatherapy, or medicines.

    Some are designed for children, in the shape of various characters.

    Others can read the humidity level in the room and automatically adjust output while others offer remote control.
  9. Cost
    This includes not only the original purchase price but the cost of electricity to run it, any special water that will need to be purchased (vs. tap water possibly), as well as filters or cartridges and their cost and frequency of replacement.

A Look at One of the Levoit Ultrasonic Humidifiers

Manufacturers

There are many makers of ultrasonic humidifiers but Dyson, Levoit, and Crane are big names and their products often receive positive reviews. Levoit offers products in the very affordable category but also some of the more feature heavy models as well. They are known for being very quiet and for well under $100 you can get the technology for remote control, auto adjustment of output, and more.

© 2010 Christine Mulberry

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    • GusTheRedneck profile image

      Gustave Kilthau 

      7 years ago from USA

      Howdy mulberry - Fine explanations and gadget descriptions. Around here we have much the opposite problem, that of too much humidity. Summer, winter...seems to make no difference.

      Gus :-)))

    • irenemaria profile image

      irenemaria 

      7 years ago from Sweden

      When you live in an apartment with tight windows the humidifier is welcome. Even my piano could use one of its own! (no joke)

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