Boneco Top-Fill Ultrasonic Humidifier U350

By: Boneco AIR-O-SWISS


Manufacturer Part # U350 Our Item # IA4515

The Boneco Top-Fill Ultrasonic Warm/Cool Mist Humidifier U-350 features a top-fill design that allows the humidifier to be filled by simply lifting the top lid and directly pouring in water. Also includes touch-sensitive digital controls, LED display, AUTO humidification mode, and on/off timer.

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Special Health and Hygiene Features:

  • 2-in-1 Water Filter Aqua Pro A250 (included) cleans the water and helps reduce white dust.
  • When operated with the separately controlled pre-heating function, the water is internally pre-heated to eliminate bacteria and viruses. The mist then exits at a pleasant and comfortable temperature of 95° F.
  • Ultrasonic system, with its high frequency vibrations, also destroys bacteria and viruses.

Additional Features and Benefits:

  • Top-Fill Direct Pour-In design eliminates heavy water bottles
  • Touch sensitive digital controls with large digital display
  • Built-in digitally controlled humidistat allows for automatically controlled and accurate moisture level
  • Humidity can be set between 30% and 70% in 5% increments or continuous, always-on setting
  • AUTO comfort mode:  Humidification is controlled automatically, and the desired humidity is set to 50%.
  • Adjustable rotating dual mist outlets for multi-directional mist, allows you to direct the mist to where you need it the most
  • Auto shut-off when desired humidity level is reached or water tank is empty
  • Indicator lights show when water tank is empty and when cleaning is recommended
  • Auto on/off timer - humidifier can be set to automatically turn on or off after a certain number of hours
  • Fragrance dispenser for dispersing essential oils
  • Energy efficient (30W for cool mist, 115W for warm mist)
  • Longer lifetime due to industrial strength titanium transducer surface
  • Cleaning brush included
  • 3-year limited warranty


  • Type: Warm or cool mist ultrasonic
  • Max Daily Output: up to 3.1 gallons / 24 hours
  • Room Size: up to 650 sq ft
  • Water Capacity: 1.32 gallons
  • Speeds: 3 mist output levels
  • Decibels: < 45 dB(A)
  • Energy Consumption: 30W cool mist / 115W when operated with warm mist option
  • Power: 120 V / 60 Hz
  • Dimensions: 12.15" W x 6.5" D x 12.8" H
  • Weight: 6 lbs

Compare Boneco Air-O-Swiss Ultrasonic Humidifiers

Manufacturer's Literature [PDF]:

Boneco U350 Product Manual
Boneco U350 Quick Start Manual