OPTIMUS U-31000 humidifier 1.5 gallon 18 hour output

Cool-mist ultrasonic humidifier

The Optimus U-31000 uses ultrasonic technology to disperse a cool mist, releasing up to 1.5 gallons of moisture over an 18 hour period. It runs with whisper-quiet operation so it will not disturb sleep. An automatic shut-off switch activates when the tank is empty, and a refill light signals when water is needed.

Bedrooms and small living areas

This unit suits anyone who wants quiet humidity control in a bedroom, nursery or small living space. The adjustable mist volume lets you set the output level you prefer. Buyers who need to humidify larger open-plan areas or whole houses should look at higher-capacity console or whole-home systems instead.

1.5 gallon / 18 hour output

The headline specification is the 1.5 gallon output delivered across 18 hours of continuous running. This figure determines how often the tank must be refilled and whether the humidifier can maintain comfortable moisture levels in your intended room size.