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White ultrasonic humidifier with transparent 1.5 gallon tank and mist control dial

Optimus Enterprise Inc

Optimus Enterprise Inc U31003 Humidifier 1.5 Gallon 18h

SKU CH-KKHW-GTBHG MPN U31003

A 1.5-gallon cool-mist humidifier runs up to 18 hours with adjustable output, built-in ionizer, automatic shut-off and a 2-8-12 hour timer

  • Product typeHumidifier
  • Key features1.5 Gallon Tank Capacity, operates up to 18 h Water Empty Au
  • Product colorWhite
  • 5 gallon tank runs up to 18 hours per fill
  • Automatic shut-off and refill light prevent dry operation
  • Adjustable mist control lets you set output level
  • Built-in ionizer with indicator light cleans the mist
  • Whisper-quiet operation and 2-8-12 hour timer suit bedrooms

Capacity and Runtime

The 1.5 gallon tank delivers up to 18 hours of continuous operation. At a moisture output above 300 ml per hour it suits medium bedrooms or offices. The automatic shut-off activates when the tank empties, preventing dry running.

Mist Control and Air Quality

Adjustable mist volume lets you match humidity to room conditions. A built-in ionizer with indicator light runs alongside the ultrasonic mist to reduce airborne particles. Whisper-quiet operation keeps noise low enough for overnight use.

Tank Design and Timer

The transparent removable tank has a carry handle for easy refilling at any sink. A refill light signals when water is low. An integrated timer offers 2, 8 or 12 hour settings for scheduled operation.

How it compares

Measured against everything we stock in Ultrasonic & Evaporative Humidifiers, at today’s prices. Recalculated every night.

Price $57.99
Pricier than about 70% of the 21 comparable items (median $40.99).

Specifications

Product
Brand nameOptimus
Model nameU31003
Product typeHumidifier
Product colorWhite
Size & build
Shipping weight0.91 kg
Package size305 × 254 × 254 mm

Questions about this item

Will the 1.5 gallon tank fit on the same shelf as my older humidifier?

The unit has a transparent tank with a handle and measures 1.5 gallons, so compare those dimensions with your existing shelf space.

How do I know the ionizer is actually running after I turn it on?

A dedicated indicator light on the front panel illuminates whenever the built-in ionizer is active.

Does the package include a replacement filter or do I need to buy one separately?

The box contains the humidifier base, the removable 1.5 gallon tank, and the user manual; no filter is included or required for this ultrasonic model.

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