Optimus 1.5 gal. Cool Mist Ultrasonic Humidifier-U31001 - The Home Depot


Model # U31001

Internet # 205326929

1.5 gal. Cool Mist Ultrasonic Humidifier

Optimus 1.5 gal. Cool Mist Ultrasonic Humidifier

This item has been discontinued.
The Home Depot no longer carries this specific product.

$44.97 / each


Model # U31001

Internet # 205326929

The Optimus Cool Mist Ultrasonic Humidifier is the ideal for ensuring your living area stays comfortable. The 1.11 gal. Tank Capacity operates up to 18 hours and shuts off when the tank is empty. The adjustable mist control allows you to set an ideal moisture level and its whisper quiet operation ensures your sleep won’t be disturbed.

  • Removable tank with handle for easy filling
  • Cetlus approval
  • Moisture output more than 230ml/hour
  • Refill light indicator
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

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Assembled Depth (in.)  12 in  Assembled Height (in.)  14 in 
Assembled Width (in.)  9 in 
Air Treatment Product Type  Tabletop Humidifier  Color Family  Whites 
Control Type  Manual  Humidifier Features  Automatic Shut Off 
Humidifier Tank Capacity (Gallons)  1.5  Included Items  No additional items included 
Minimum run time (hours/tank)  18  Moisture dispersion type  Cool mist 
Number of Fan Speeds  None  Product Weight (lb.)  5 lb 
Returnable  90-Day  Room Size (sq. ft.)  Small (Less than 400 sq. ft.) 
Voltage (volts)  120  Water Filter Replacement Model#  U30012 
Warranty / Certifications
Certifications and Listings  No Certifications or Listings  ENERGY STAR Certified  No 
Manufacturer Warranty  Optimus 1 Year Limited Warranty 


Rated 5 out of 5 by 1 reviewer.
Rated 5 out of 5 by Exactly What I Wanted I purchased this after my doctor recommended buying one to have after having my tonsils removed as an adult. The humidifier worked straight out of the box. I found that on its highest setting, you could see the cloud of mist pouring out of it (that could collect on a near surface without air circulation) but the highest setting was beyond what I think anyone would need - you could still see the mist even on some of the lowest settings on the dial. I used it in the bedroom (a fairly large bedroom) on its medium setting for the duration of my recovery, and still have been using it out of habit. The water tank holds for up to 4-5 days from full to empty running it at medium power for ~8 hours a night. I have had zero leaks or puddles form anywhere, and no issues with the motor or lights either. I turned off the "night light" feature after the first night as it was too bright for me, but could be useful for use in a child's room. December 18, 2014
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