Is the Lasko personal humidifier worth it?

For a desk, nightstand or hotel room it is a cheap way to add a little moisture, and at $23.68 at Best Buy as of November 3, 2026 it is priced near the bottom of its range. Do not expect it to humidify a whole bedroom; a 400 ml tank runs out quickly.

How long does the 400 ml tank last?

Expect a few hours at low mist and much less on the higher settings. Plan on refilling it during the night if you run it continuously.

Does it need a filter?

No. It is filter-free, so there is nothing to replace; just rinse the tank and wipe the ultrasonic disc to keep mist output steady.

Can I power it from a laptop or power bank?

Yes. It runs on USB power, so a laptop port, wall adapter or power bank all work. Check that your adapter supplies enough current for the setting you use.

How big a room can it handle?

Realistically a desk area or a very small room. The listed 190 to 300 sq ft figures describe maximum coverage, not what a 400 ml tank can sustain.

Small personal humidifiers like this tend to drop during late-fall and winter humidifier sales and around Black Friday. The current $23.68 at Best Buy is already low against its recent range.

Where can I buy the Lasko Ultrasonic Personal Cool Mist Humidifier?

10 stores we checked sell it, including Best Buy, The Home Depot, Target, Newegg Business, Wayfair.

Lasko Ultrasonic Personal Cool Mist Humidifier

Q: Where is the Lasko Ultrasonic Personal Cool Mist Humidifier cheapest?

At Best Buy, for $23.68, as of our latest check.

Best price now

$23.68at Best BuyObserved at 8:25 PM

Compared across 6 stores. Prices are checked against each store and labelled with when.

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Our take on the Lasko Ultrasonic Personal Cool Mist Humidifier

The Lasko Ultrasonic Personal Cool Mist Humidifier is a tiny USB-powered tabletop unit with a 400 ml top-fill tank, dual mist nozzles, four mist settings and a multi-color nightlight. It measures about 3.7 by 3.7 by 5.4 inches and weighs 0.54 lb, so it fits on a desk or nightstand and travels easily. It has no humidistat, no filter and no low-water indicator beyond automatic shutoff. At $23.68 at Best Buy as of November 3, 2026, it sits at the low end of its recent price range, with 6 stores listing it new.

What reviewers say

Owner feedback on this class of tiny USB humidifiers is mixed. People like the size, the nightlight and the low price, but many find the tank too small for all-night use and the mist output modest.

Pros

Compact footprint on a desk or nightstand
Quiet ultrasonic operation
Nightlight is a nice touch for bedrooms
Simple one-button setup

Cons

Frequent refills because of the small tank
Mist output weaker than full-size humidifiers
No low-water warning before shutoff
Build feels light and plasticky

About the Lasko Ultrasonic Personal Cool Mist Humidifier

Enhance your space with the Lasko Ultrasonic Cool Mist Personal Humidifier, designed to deliver soothing moisture for a more comfortable environment. This compact humidifier is perfect for small rooms, whether at home, in the bedroom, or in your office. It’s powered by a USB connection, allowing convenient plug-and-play use anywhere you need it, whether at your desk, bedside, or even on-the-go while traveling.With its dual mist nozzles, the Lasko humidifier gives you the flexibility to select from 4 mist control settings for optimal comfort. Choose between both nozzles misting, alternating mist patterns, or single nozzle output to adjust the moisture to your personal preference. The 400-milliliter top-fill water tank provides hours of cool mist, and its easy-to-use design includes a single-button control, simplifying operation to make it easy for any setting.A built-in multi-color LED nightlight adds a touch of ambiance to your space, enhancing relaxation. As a safety feature, the humidifier automatically shuts off when the tank is empty, allowing for worry-free use throughout the day or night. Plus, with no filters to replace, maintenance is minimal, making this humidifier a convenient addition to your daily routine.Fully assembled right out of the box, this Lasko Cool Mist Ultrasonic Humidifier combines functionality with ease. It’s the ideal choice to add refreshing moisture to your room while maintaining a compact and stylish look in any environment.