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H925S Ultrasonic Cool Mist Humidifier by PureGuardian® H925S Ultrasonic Cool Mist Humidifier by PureGuardian®
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H925S Ultrasonic Cool Mist Humidifier by PureGuardian®

Availability: In stock - USA and Canada SKU: H925S
MSRP: $39.99
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Product Information

The 10-hour* Ultrasonic Cool Mist Humidifier guards against problems caused by dry air in the home.  Cleanliness matters! Unlike other humidifiers that grow slimy mold on the water tank surface, Silver Clean™ Protection is embedded in the tank to fight the growth of mold and mildew on the surface of the water tank.

Thanks to ultrasonic technology, it disperses a soothing, cool mist into the air and is ultra-quiet making it ideal to have on while you sleep. It is great for tabletops due to its compact size.

A low water indicator light lets you know when it’s time to refill the water tank and the night light feature makes it a great addition to kids’ rooms!  PureGuardian® humidifiers create a better home environment for those suffering from colds, allergies and dry skin. Order yours now!

Note: Run time is based off of running the unit on low speed, also depends on atmospheric conditions.

It is important to only use GENUINE Guardian Technologies™ replacement parts to maintain product performance.

Ideal For

  • Small rooms


Silver Clean™ Protection fights the growth of mold and mildew on the surface of the water tank

Ultrasonic Technology quietly disperses a fine mist providing relief from the dry air

Optimize comfort with soothing low and high cool mist settings

Compact design is perfect for your nursery or desktop and features an optional night light

No evaporating pads, filters or wicks to clean or replace

Additional Features:

  • Up to 10-hour run time*
  • .21 gallon tank capacity
  • Directional Mist Nozzle
  • Low water indicator illuminates when it’s time to refill the tank
  • Auto shut off

Product Specifications

  • SKU: H925S
  • Weight: 1.14lbs.
  • Dimensions: 5 x 5 x 10.8
  • Input Voltage: DC24V, 60Hz, .5A
  • Cord Length: 5'
  • Bulb Wattage 12W
  • Construction: Plastic
  • Run Time: Up to 10 hours
  • Manual: H925S PDF Manual
  • The PureGuardian® 10-Hour* Ultrasonic Cool Mist Humidifier uses a metal diaphragm vibrating at an ultrasonic frequency to create water droplets that are expelled out into the room to help maintain the desired humidity level. An ultrasonic humidifier is virtually silent when operating.

  • Why should I use a humidifier?
    People need a certain level of humidity to be comfortable. In the winter, indoor humidity can be extremely low, and the lack of humidity can dry out your skin and mucous membranes. Low humidity also makes the air feel colder than it actually is. Dry air can also dry out the wood in the walls and floors of our houses. As the drying wood shrinks, it can cause creaks in floors and cracks in drywall and plaster. Dry air also increases static electricity.

    Does the product require regular cleaning?
    It is recommended to wipe out the water tank and base of the product on a regular basis; approximately every 1–2 weeks (depending on use). The Guardian Technologies™ PureGuardian® Ultrasonic Table-Top Humidifier has Silver Clean™ technology in the water tank, which helps to fight the growth of mold and mildew on the surface of the water tank.

    When storing the unit, it is recommended to pour any excess water out and clean it with a soft, damp cloth. Let dry completely before storing.

    Are there any wicks or evaporating pads to replace?
    There are no wicks or pads to replace.

    What is ultrasonic technology?
    An ultrasonic humidifier uses a metal diaphragm vibrating at an ultrasonic frequency to create water droplets. Thanks to ultrasonic technology, the Guardian Technologies™ humidifier is virtually silent when running, making it easy to have on while you sleep.

    What is Silver Clean™ technology, and why is it used in your humidifier?
    Silver Clean™ technology is small particles of silver embedded in the tank to fight the growth of mold and mildew on the surface of the water tank.

    Where should I use the product?
    It is recommended that you place the product up on a table or nightstand and not on the floor.

    What is a comfortable humidity level?
    Forty to fifty-five percent (40–55%) humidity is considered within the comfortable range. Any humidity level below thirty percent (30%) is considered dry.

    Do I need to put in a certain type of water for my humidifier to work?
    You can use either distilled or regular tap water. If you have a high mineral content in your tap water, it may be preferable to use distilled water. Since distilled water is likely to contain lower mineral content than most tap water, it will prevent less build-up.

    How long is the warranty?
    The warranty is 1-year limited. For detailed warranty specifications, please refer to the warranty section in the instruction manual.

    If you have further questions, please contact us at 1-866-603-5900

  • By completing this form, you agree to be automatically added to our marketing lists. We promise to respect your privacy. You can opt-out by clicking unsubscribe from any email you may receive from us.

    To read the full warranty, click here.



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By: FD Lady

Lasts All Night!

This works great in my bedroom at night. It is very simple to fill with water & operate. Have not ever had a problem with mold like other humidifiers I have had in the past, thanks to the silver clean protection that is embedded in the water tank. This lasts me all night & I wake up in the morning feeling good without a dry scratchy throat. Also, the design is very nice.. matches any kind of room!


Simple Yet Effective

One of my kids had a cold/cough. Humidifiers help alleviate some of the symptoms. No manual needed. Fill up the tank, plug it in, and start pressing buttons to vary the steam output and turn the lights on and off. My kid likes the night light feature; It's soothing apparently. Super quiet at the lowest setting, but even at MAX, the gentle hum is barely discernible. It works, and lasts all night.