A 10-liter tank that finally fills a whole living room

Levoit OasisMist 1000S

Name: Levoit OasisMist 1000S
SKU: PG40HUM006
Price: 150 USD
Rating: 9 (1 reviews)

9.0/10high confidenceLast checked Jun 19, 2026

Dr

Reviewed by

Dr. Yocheved Yorkovsky · Science Editor, Health, Chemistry & Environment

The large-room answer. A 10-liter tank, ~600 sq ft of coverage, and up to 100 hours of runtime cover the open spaces a bedroom unit can't, with a sensor and app holding your target. It's ultrasonic and the priciest here, but for a big dry room nothing else keeps up.

The OasisMist 1000S exists because bedroom humidifiers physically cannot humidify a living room — the math of output versus air volume doesn't work. This is Levoit's large-room answer: a 10-liter tank, output strong enough for open layouts, a humidity sensor with auto mode, and app control to schedule it around your day. Owner reports highlight the multi-day runtime at moderate settings and the top-fill design, which matters more the bigger the tank gets. It's a serious appliance with a serious footprint and price — exactly right for the large-space problem, unnecessary for a standard bedroom.

$150

Buy →

PickGrade may earn a commission from purchases made through links on this page, at no extra cost to you. This never affects our grades. Full disclosure.

Last reviewed Jun 11, 2026

AI grade·Refined by real owners

What we like

✓Output sized for large rooms and open layouts
✓10L top-fill tank with multi-day runtime at moderate settings
✓Humidity sensor with auto mode
✓App scheduling and control
✓Quiet relative to its output class

Trade-offs

−Ultrasonic - white dust with tap water; distilled water or filter sponge recommended
−Priciest pick here (~$150)
−Big tank means more surface area to clean
−Cool-mist only; app/Wi-Fi setup needed

Best for

Large rooms and open layouts where bedroom-sized units never move the number: big tank, strong output, and a sensor that holds the target across the space.

Avoid if

You're humidifying one normal bedroom — this is overkill in size, footprint, and price; the Classic 300S does that job for less than half.

The three lenses

How we grade →

Value & Longevity · Eran Yorkovsky
8.4/10

Score breakdown

fit9.1/10
quality8.9/10
ease8.8/10
value8.4/10

Specs

fill: Top-fill; aroma tray
type: Smart ultrasonic cool-mist tower humidifier (large room)
price: ~$150
smart: VeSync app + Alexa/Google; Auto mode
coverage: Up to ~600 ft²; 2+ ft mist height; 350 mL/h
warranty: 2-year warranty
efficiency: Energy Star; whisper-quiet
tank runtime: 10L tank; up to ~100 hours

How we know

High confidenceLast checked Jun 19, 2026

The Levoit OasisMist 1000S is PickGrade's premium, large-room pick — a smart ultrasonic cool-mist tower built for the big, dry spaces a small unit can't keep up with. Its headline numbers are genuinely class-leading: a huge 10-liter tank, up to 100 hours of runtime, and coverage up to about 600 square feet, with a 2-foot-plus mist plume that spreads moisture across an open room — so you might refill it only once or twice a week. Consumer Reports rated its overall performance very good for spaces up to 600 sq ft. The smart features match Levoit's best: the VeSync app shows real-time humidity, runs schedules, and supports Alexa/Google voice control, while Auto mode holds the humidity target you set. It's also easy to live with — top-fill so you just pour water in, an aroma tray for essential oils, whisper-quiet operation, Energy Star efficiency, a space-saving tower footprint, and a 2-year warranty. The honest caveats: as an ultrasonic unit it can throw white dust with tap water, so distilled water (or the optional filter sponge, itself a periodic replacement) is recommended; it's the priciest pick here at around $150; the big tank means more to clean; and it's cool-mist only, with the usual app and Wi-Fi setup. For large bedrooms and open living spaces, it's the standout.

Compare Levoit OasisMist 1000S with the top alternates side-by-side.

Compare picks →