Levoit LV600HH

Name: Levoit LV600HH
Brand: Levoit

By the NestyFinds editorial team · Researched from manufacturer manuals, EPA's humidifier guidance and CPSC recall records · not bench-tested · Reviewed: September 2026

Ultrasonic 300 / 500 mL/h 430–753 ft² claimed Distilled water

A 6-liter ultrasonic humidifier with an optional warm-mist heater, a remote and a built-in humidity sensor, rated by Levoit for 430–753 ft².

Pros

Reads humidity itself and holds a target you set in auto mode, instead of running the room wetter and wetter.
Levoit publishes output for both modes, so its 430–753 ft² claim can be checked: our arithmetic at 0.5 air changes an hour gives about 620 ft² on cool mist and 1,040 ft² on warm.
No wick or filter to replace.
Warm mist raises output from 300 to 500 mL/h, per Levoit's manual.

Cons

Ultrasonic: EPA counts this type among those that disperse the most minerals and microorganisms from the tank, and Levoit's safety section says to fill it only with purified or distilled water.
Rated at 280 W with its heater, against 30 W for Levoit's evaporative Superior 6000S.
Levoit's page gives two runtimes, 36 hours and up to 50, and it publishes no noise figure.
Needs fresh water every day or two and cleaning every 3 days, per its manual.

Our editorial rating, not a lab measurement. Weighted on documented output against the room-size claim, humidifier type under EPA's guidance, water and cleaning demands, running costs and documentation. Held back by the distilled-water requirement, the heater's power draw and conflicting runtime figures.

Verdict

The LV600HH is a capable bedroom humidifier with a humidity sensor, published output and no filter to buy, but it is ultrasonic: Levoit's own manual says to fill it only with purified or distilled water, and EPA counts the type among those that disperse the most minerals. Budget for distilled water, or choose an evaporative unit.

Check current price

Price, seller and package contents change. Check the variant on Amazon before you buy.

How much it can humidify

Our calculation, not the manufacturer’s

What 300 mL/h or 500 mL/h can keep at 40% humidity

Outdoor air replacing indoor air	Cool mist	Warm mist
0.35× an hour	890 ft²	1,480 ft²
0.5× an hour	620 ft²	1,040 ft²
Once an hour	310 ft²	520 ft²

Each square foot of floor under an 8 ft ceiling needs about 0.97 mL of water every time its air is replaced by freezing outdoor air, to hold 70°F at 40% humidity. Divide the output by that and by how often your home swaps its air. Leakier homes swap more often, so the same machine covers less. Levoit claims 430–753 ft². Output from Levoit's LV600HH manual.

Is it the right one for you?

Who it's for

You want a bedroom-sized humidifier with a humidity sensor and a remote.
You are willing to buy distilled or purified water for every refill.
You want the option of warm mist.

Who should skip it

You want to fill from the tap: Levoit's manual says purified or distilled only.
You want the lowest power draw: the heater is rated at 280 W.

Water, cleaning and running costs

Type. Levoit calls it a hybrid ultrasonic humidifier. Its manual shows an ultrasonic transducer that makes the mist and a heating element that warms the water in warm-mist mode.

Water. Purified or distilled water only. Levoit's manual says so in its safety section.

Cleaning. Change the water every day or two, clean every 3 days and deep clean the tank every 2 weeks, per Levoit's manual.

What you keep buying. Purified or distilled water (every refill).

EPA’s guidance for every portable humidifier: empty and refill the tank daily, clean it every third day, and do not humidify above 50%.

Specifications

Levoit LV600HH — documented specifications
Type	Ultrasonic, with a heater for warm mist
Moisture output	300 mL/h cool; 500 mL/h warm
Coverage claimed	430–753 ft² no standard behind it
Water	Purified or distilled only Levoit's manual
Tank	1.5 gal (6 L)
Cleaning	Every 3 days; deep clean every 2 weeks

The full record: 8 more documented specifications — nothing is removed, it is just not what decides

Rated power	280 W
Humidity control	Built-in sensor; auto mode holds a set target
Runtime	36 or up to 50 hours Levoit's page gives both
Filters	None
Dimensions	11.3 × 7.0 × 10.5 in
Weight	6.5 lb
Warranty	1 year, plus 1 more if registered
CPSC recalls	None found for Levoit or VeSync, September 2026

5 things we could not verify — we leave these blank rather than estimate them

Levoit publishes no noise figure for the LV600HH.
Levoit's product page gives both a 36-hour and an up-to-50-hour runtime, and the manual gives neither.
The output figures are Levoit's own. AHAM's Verifide directory currently lists air cleaners only, so no independent program checks humidifier output.
Our coverage arithmetic assumes 70°F and 40% humidity indoors with freezing outdoor air; colder or damper conditions change the result.
The CPSC search covered recalls that mention Levoit or VeSync. It cannot show problems that never led to a recall.

What you actually get

What the linked package includes
Capability	What it needs	Status
Remote control with battery	—	Included
Aroma pads and cleaning brush	—	Included
Purified or distilled water	Every refill	Sold separately
Replacement filters	—	Not offered

Package contents vary by variant and seller. Check what is in the box on the Amazon listing before you buy. “Not verified” means the manufacturer does not document it either way — not that it is missing. “Not offered” is the other thing: the manufacturer does document it, and the answer is that this model does not have it.

How we researched this

Checked against EPA's guidance on home humidifiers, the CPSC recall database, peer-reviewed research and the manufacturer's own pages. We did not test this humidifier. Nothing here is a measurement of ours: every figure is either documented by the manufacturer or published by an independent standards or testing body, and where the two disagree this page says so.

Not verified for this model — 5 notes

Levoit publishes no noise figure for the LV600HH.
Levoit's product page gives both a 36-hour and an up-to-50-hour runtime, and the manual gives neither.
The output figures are Levoit's own. AHAM's Verifide directory currently lists air cleaners only, so no independent program checks humidifier output.
Our coverage arithmetic assumes 70°F and 40% humidity indoors with freezing outdoor air; colder or damper conditions change the result.
The CPSC search covered recalls that mention Levoit or VeSync. It cannot show problems that never led to a recall.