Home » Levoit Lv600hh Hybrid Ultrasonic Humidifier Review

LEVOIT Hybrid Ultrasonic Humidifier Review: Quiet as a Mouse

Unless you live in an area of the world where the climate remains constant year-round, chances are you have to adapt your lifestyle as the seasons change. These fluctuations in climate can bring about challenges that are, oftentimes, hard to deal with. Thankfully, humidification can be a lifesaver for many people who have to go through these seasonal changes every year.

Humidification is the process of adding moisture to the air. In the winter months, the air gets extremely dry, which leads to itchy, flaking skin, shocks from static electricity, and nasal passages drying out. Dried out nasal passages make you susceptible to colds and flu. By adding moisture to the air you breathe, you can help eliminate these problems.


Conversely, the summer months can bring about allergic reactions to pollen and mold, and overly air-conditioned rooms can replicate the conditions that lead to dry nasal passages during the winter months. The sun’s heat can also cause dehydration, and the addition of a humidifier will keep your body’s internal temperature balanced and your skin looking its best.

Levoit’s answer to this year-round problem is their Hybrid Ultrasonic Humidifier, which provides cool mist for the summer, and warm mist for the winter. With multiple output settings, whisper-quiet operation, and a large tank for long hours of use, it seems like most people should have one of these in their home. We get to the bottom of what makes this model tick in our in-depth review.


Healthy Mist For Year-Round Use

This humidifier has dual temperature settings, meaning it can be used during any of the four seasons. So what are the differences and benefits that cool mist and warm mist options offer?

Setting the unit to “cool mist” will disperse steam at room temperature, and use less electricity than when set to “warm”. Cool mist is also easier to humidify large-size rooms. Warm mist, on the other hand, requires more power to help the water achieve a boiling point but outputs less noise as the steam will automatically rise and disperse into the atmosphere.

Warm mist is perfect for the winter, as it heats up rooms while providing humidity to help you stave off colds and flu. However, with both cool and warm options, cleaning them regularly is required. The bacteria and mold production that cool mist humidifiers are prone to be eliminated when you are boiling water. However, warm mist replaces those airborne pathogens with scale, which is a white residue that results from heating hard water. While not exactly hazardous to your health, it can leave a film of dust around your home that is a pain to deal with. It’s a double-edged sword with both having pros and cons, and we recommend using distilled water with any humidifier.


Quiet As A Mouse

The last thing you want to put up with when you are trying to get a peaceful night’s sleep is an environment with a lot of noise. Levoit fashioned this hybrid humidifier using ultrasonic technology, which means it does not contain a fan. This results in quieter operation, as it uses high-frequency vibrations to distribute mist. Less than 36 decibels of sound is output at all times, making this an attractive option for those that are sensitive to noise and need total silence to fall asleep.

Large Tank For Long Use

While it provides a large tank, its a remarkably medium-sized unit that reduces the amount of space it takes up in your home. 6 liters of water can be housed in it with impressive longevity, giving off anywhere between 20 and 36 hours of continuous mist. Great for medium and large-sized rooms, it only needs to be topped up every other day and the tank has a well-designed handle that helps when re-filling and cleaning.

Dial-In The Display

A touch-screen display adorns the front of the unit, with an array of operational buttons. Aside from the on/off switch, you can control the mist level and temperature, and you also have full control over how much humidity is being sent out. A timer function, as well as an auto setting, are also included, and Levoit throws in a handy remote control you can use up to 16 feet away.

How Does It Stand Out?

What makes this humidifier so special? There are a few key features that stand out and set it apart from its competitors.

Ultrasonic Technology

The hybrid ultrasonic technology allows for dual temperature misting, which is very convenient so you can use it year-round to enhance your air quality. There are many benefits to ultrasonic technology. It basically uses high-frequency sound vibrations to produce the mist that comes out of the unit. This eliminates the need for a fan, making them ultra-quiet. They also do not use a filter, which will save you money in the long run as you won’t have to keep replacing them. The downside to this filterless technology is the fact that mold, bacteria, and scale (hard water dust), can be sent out into the atmosphere. It is for this reason you should clean the unit after each use.

Perfect Moisture Levels

With humidity customization, you can determine how much moisture gets dispersed into the room, and Levoit allows for anywhere between 40% and 80% for a perfect balance. They’ve also got you covered If you aren’t sure how much you need to add. By engaging the auto button, it will sense the room’s level of moisture, and add between 55% and 65% to balance it out perfectly.

Aromatherapy Aid

For those that prefer their homes to have a pleasant smell, there is an aroma box included in the unit. You can add a few drops of your favorite essential oil to freshen up the room. Another use for the aroma box is to add oils that can aid in the relief of cold and flu symptoms. Eucalyptus oil is a great option that can fight viruses and respiratory issues, while peppermint oil can be used as a natural decongestant that reduces the effects brought on by fevers.

Amazing Accents

What would this humidifier be without a couple of bells and whistles?

It may sound insignificant, but the adjustable nozzle on the top of this unit will make dispersing the mist so much easier. This means you can keep the humidifier in the corner of your room, while the middle of the room gets the majority of the moisture. Many models still don’t include this feature, which usually results in your walls being covered in a film of wetness, and your room taking a long time to reach a balanced level of humidity.

The inclusion of remote control is the other noteworthy feature. On the surface, it can seem like only lazy people need to use a remote (and in many cases this is true), but having it handy makes customizing the settings that much more convenient. If you wake up in the middle of the night and need to adjust the humidity level or turn off the unit, you don’t have to stumble across the room in a slumber haze just to make those changes. Likewise, if you are using it in an office or family room, you don’t have to take attention away from the things you are currently consumed with. The remote control reaches the unit from 5 meters (16ft) away and is a quick convenience so you can spend your time focused on more important things.



Can I fill up the reservoir from the top?

You cannot. This model requires you to flip the tank upside down and fill it using the opening on the bottom. Levoit provides a good handle on the tank and its rectangular shape helps keep it stable when filling.

Does this humidifier require filter replacement every few months?

Nope. This model does not use a filter (which in turn, saves you money).

How difficult is it to clean this unit?

It’s pretty easy to clean as the tank detaches from the shell of the unit. Turning it over, the tank has an opening on the bottom, which is large enough to get your hand inside to scrub it clean. We recommend first soaking the tank in a water and vinegar solution for 20 to 30 minutes before scrubbing it. This will disinfect and kill bacteria, and also loosen up any built-up dirt so it wipes off easily.

Does this humidifier come with a remote control?

Yes. You can dial in the settings directly on the unit’s display, or use the remote control for convenience. It works up to 5 meters / 16 feet away.

Can I use this unit safely while sleeping?

Absolutely. It has a 12-hour timer that will trigger the unit to shut off once the time period is up, and it also has an automatic shut-off feature if the water level gets too low before the 12-hour window expires.


Levoit has made a really nice all-season humidifier that can be used in a variety of rooms. Offices, nurseries, and bedrooms will all benefit from having this unit in them, and it is compact enough to be tucked away into a corner, out of sight.

The large tank means you won’t be constantly refilling it, and its quiet operation will have you forgetting its even working to enhance your life. If you are looking for a filterless option, we highly recommend this model from Levoit.

If this humidifier is not what you were looking for, check these out:
Best Humidifiers for Allergies
Best Filterless Humidifiers
Best Warm Mist Humidifiers
Best Humidifiers for Baby

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