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PureGuardian H7550 90-Hour Ultrasonic Warm or Cool Mist Humidifier

PureGuardian H7550 90-Hour Ultrasonic Warm or Cool Mist Humidifier

SKU: H7550

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The PureGuardian® H7550 90-Hour Ultrasonic Warm or Cool Mist Humidifier features a sensor that automatically adjusts humidity to 50%, or you can pre-set to between 40%‒75%. Run continuously for up to 90 hours, or set for 1-12 hours to quietly deliver a warm (80°F) or cool mist through a 2-tier extension wand. Adjustable mist control varies mist output level. Silver Clean™ technology keeps the 1.32-gallon tank free of mold and mildew. Low water indicator. Night light with on/off button.

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MSRP: $187.00
Sale Price: $149.99

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in 24 to 48 hours

This product provides relief from: Sinus Trouble

PureGuardian® H7550 90-Hour Ultrasonic Warm or Cool Mist Humidifier, humidifies dry air in large or small rooms to help protect against dry skin and alleviate the discomfort of colds, allergies, and flu. The PureGuardian H7550 comes with many features that can be personalized to suit your preferences as you enjoy the benefits of warm or cool mist humidification. The H7550 features a large digital display and touch control panel. Use the Cool/Warm Mist button to select Cool, and moisturized air is dispersed at room temperature. Select Warm, and in 15 minutes water is warmed to a soothing 80°F before it is dispersed. Either way, the H7550's ultrasonic vibrations quietly and safely produce an ultra-fine mist that is evenly delivered into the room through a multi-height extension wand. You can regulate how much mist is dispensed with the Mist Control button for Low, Medium or High mist output.

The PureGuardian® H7550 comes with many additional features. Set desired humidity level to a consistent 50% by pressing the Auto Humidistat button. Alternatively, use the Adjustable Humidistat button to set your desired humidity level in 5% increments from 40% to 75%. Either, way, the H7550 automatically shuts off when your desired humidity level is reached (unless you choose to run the unit continuously). Use the Timer button to run the unit between 1 and 12 hours or to run continuously. Quiet enough to sleep with, the H7550 also features a soft-glow (blue) Night Light, which can be turned off. When water runs too low, the H7550 automatically shuts off and flashes a low-water indicator. Silver Clean™ technology prevents the growth of mold and mildew on the inside of the tank, ensuring you breathe in only clean, moisturized air. Easy to use – just fill the tank, turn it on, make your selections, and the H7550 runs for up to 90 hours ∗ before needing to refill the 1.32-gallon tank. Easy to clean and nothing to replace.  3-Year Manufacturer's Limited Warranty.


  • Ultrasonic vibrations create an ultra‐fine, warm or cool humidifying mist
  • Humidifies large and small rooms for up to 90 hours before tank needs to be refilled ∗
  • Silver Clean™ technology inhibits mold and mildew growth inside the tank
  • Virtually silent operation – no fans
  • Uses room‐temperature tap water or distilled water
  • Multi‐height mist extension wands disperse mist evenly throughout room
  • Full‐featured touch control panel with large digital display, includes buttons for:
    • Power: turns humidifier ON/OFF
    • Dual Cool/Warm Mist Selector & Night Light Control:
      • Select Cool or Warm Mist:
        • Cool setting – water temperature stays at room temperature
        • Warm setting – water temperature of 80°F (after 15-minute warm up)
      • Turns blue soft-glow Night Light ON/OFF
    • 2 Humidistat options:
      • Auto Humidistat ‒ maintains a constant 50% humidity level
      • Adjustable Humidistat ‒ set between 40% and 75% in 5% increments
    • 2 Timer options:
      • Set between 1 and 12 hours ‒ auto shuts off after elapsed time (or temporarily when selected humidity level attained)
      • Set for Continuous Operation ‒ auto shuts off only if water tank level too low
    • Mist Control ‒ Low, Medium or High mist output
    • Water Level Window ‒ vertical window gives you a visual of when to refill tank
  • Auto shut-off occurs when:
    • low water level detected ‒ low water icon also flashes on display panel
    • selected humidity level is attained (unless set for Continuous Operation)
  • Low maintenance ‒ easy to clean
  • Comes with cleaning brush for ultrasonic disk
  • No added costs ‒ no wicks, pads or filters to replace
  • 1.32-gallon tank capacity
  • 5-foot power cord
  • Size:  13.98"H x 9.76"W x 5.12"D
  • Weight:  5.45 lbs
  • 3-year warranty
∗ Note: Run time is based on unit running on cool and low mist settings, and controlled atmospheric conditions.

Specifications for PureGuardian® H7550 90-Hour Ultrasonic Warm or Cool Mist Humidifier

• Humidifying Mode: Warm/Cool Ultrasonic Mist
• Power Supply: 120V, 50/60 Hz
• Power Consumption: 30W (cool mist); 130W (warm mist)
• Tank Capacity: 1.32 gallons, >14 ozs per hour
• Successive Humidity Hours: Up to approximately 90 hours between tank refills
• Dimensions: 13.98" H x 9.76" W x 5.12" D
• Weight: 5.45 lbs


  • Please see Owner's Manual tab for full use and care instructions on the PureGuardian® H7550 90-Hour Ultrasonic Warm or Cool Mist Humidifier.

Ultrasonic Technology:

  • This humidifier uses a metal diaphragm that vibrates at ultrasonic frequency to create water droplets.
  • This technology is virtually silent when running, so can be used without disrupting sleep.
  • Neither humans nor pets (or other animals) can hear the high frequency vibrations.
  • It is important to keep the ultrasonic disk inside the unit free of any deposit buildup. Following the manufacturer's instructions, use the included cleaning brush to gently clean disk and remove any buildup or deposits.


  • Please read and follow all of the manufacturer's instructions before using or cleaning this device.
  • This product releases a water mist. Do not place the unit directly on wood or on anything that could be damaged by water.
  • Place unit on a firm, level, flat surface – at least 6 inches (15cm) from walls or objects for proper air flow.
  • Do not place unit on an uneven surface or on carpeting.
  • Unplug the unit before filling or cleaning.
  • Do not cover the mist dispersing spout at any time during use.
  • Do not put anything in the water tank except cool, clean water.
  • Do not put hot or boiling water in the water tank.
  • Do not leave water in the tank for long periods of time or when storing.
  • Wash out the water tank using fresh water only. Do not use detergents or cleaning chemicals to clean the tank.
  • Do not submerse the base of the unit in water or pour water on the unit.
Note: If you live in a hard water area, it is recommended that you use distilled water in this humidifier. Use of hard tap water can produce a fine white dust that can settle on objects, and also will require more frequent cleaning of the humidifier due to mineral buildup. Distilled water does not produce a white dust or buildup.

Click here to view the Owner's Manual for the PureGuardian® H7550 90-Hour Ultrasonic Warm or Cool Mist Humidifier.

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