How long does the tank last?

With a 0.22-gallon tank, expect a few hours of mist per fill, less on high output. Plan on refilling daily for all-night use.

What room size does it suit?

It is a personal humidifier for a desk, nightstand or car, not a whole room. For a bedroom or living area, a larger tank model is the better fit.

Yes. It stops when the water level gets too low, which protects the unit from running dry.

Tap water works, but distilled water reduces the white mineral dust that ultrasonic humidifiers can leave on nearby surfaces.

This model has simple on/off operation rather than selectable mist levels or a built-in humidity sensor.

It is quiet and small enough for a nursery shelf, but the short run time means you will refill it during the night. Keep it out of a child's reach.

At Pick Your Plum, for $19.99, as of our latest check.

3 stores we checked sell it, including Pick Your Plum, UntilGone, Daily Steals.

$19.99at Pick Your PlumChecked 14 h ago

Compared across 3 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

It checks today's price at every store, compares the alternatives and answers in about a minute.