Humidifiers are rapidly becoming staples within the American home. With more people becoming aware of the benefits that humidifiers bring, the humidifier market has evolved to cater to everyone’s needs.

The most common humidifiers release either warm mist or cool mist only. Several manufacturers, however, have started producing ultrasonic humidifiers that are dual mist, which means they produce both warm and cool mist.

Dual mist ultrasonic humidifiers give you the best of both worlds because you enjoy the benefits of both warm mist and cool mist. They’re quiet, easy to use, and, more importantly, very effective at raising humidity to the most comfortable levels at home.

In this article, we’ll be exploring the best dual mist ultrasonic humidifiers on the market to showcase the benefits of these dynamic models.

  • Dual 360° nozzle
  • Humidistat
  • Automatic Shut Off
  • Touch & Remote Control
  • Smart Auto Mode
  • 2-Year Warranty

  • Dual Jet Nozzle
  • Automatic Shut Off/Timer
  • Humidistat
  • Auto & Sleep Mode
  • Demineralization Cartridge
  • 3-Year Warranty

  • 360° Rotating Nozzle
  • Automatic Shut Off/Timer
  • Humidistat
  • Multiple modes
  • Memory Function
  • 1-Year Warranty

  • 360° Rotating Nozzle
  • Water Low Indicator
  • Automatic Shut Off
  • Ion Exchange Filter
  • 3 Output levels
  • 1-Year Warranty

The Levoit LV600HH is a powerful ultrasonic humidifier that can produce both warm and cool mist. Easily one of the more cutting edge humidifiers on this list, the LV600HH has all the makings of a high-end humidifier.

The LV600HH has all the features and functions that you would expect from a humidifier of its caliber: a very accurate humidistat, an automatic shut off feature, a water low indicator, a remote control (which is a BIG plus!), an auto mode that automatically adjusts humidity levels (another big plus!), and even an optional aromatherapy feature. Needless to say, the LV600HH definitely has several features that make using it all the more convenient.

Aside from being abundant in smart features, the LV600HH is also big on performance. Thanks to its large, 1.5-gallon tank, the LV600HH is capable of humidifying areas up to 753 sq. ft. in size. On the cool mist setting, it’s able to release 1.9 gallons of cool mist every 24 hours; on the warm mist setting, it can release a whopping 3.17 gallons. With that much power, the LV600HH is able to quickly and quietly bring humidity to the most comfortable levels at home.

Naturally, with that many features and such impressive cleaning performance, the LV600HH comes at a slightly higher price and is more difficult to use. Many users complain that the LV600HH is also very high maintenance because its nooks and crannies have to be cleaned on a weekly basis to avoid the build-up of dirt, mold, and limescale. In addition, it has a very short warranty of only 1 year.

However, even with these flaws, the LV600HH remains a top performer in terms of cleaning power, ease of use, and features. If you’re looking for a humidifier that does the job and more, then look no further than the LV600HH.


  • Large room coverage
  • Easy to clean tank
  • Quiet
  • Durable
  • Humidifies quickly
  • Accurate humidistat
  • Remote Control
  • Can diffuse essential oils
  • Modern, sleek design
  • Automatic humidity control


  • Expensive
  • High maintenance
  • Difficult to fill

The U7147 from Boneco (formerly Air-O-Swiss) is one humidifier that’s about to give the LV600HH a run for its money. Built with even more features than the LV600HH, the Boneco redefines convenience for people who use humidifiers.

The U7147 has all the basic features as well as a lot of extra features that make use and maintenance easy. Aside from the usual humidistat, automatic shut off feature, and water low indicator, the U7147 also offers a timer, an auto mode, a sleep mode and a maintenance reminder that lets you know when it’s time to clean it. It even has a built-in Hydro Cell, which is an activated carbon filter that’s able to remove any impurities from the water before it’s released. It also comes with a demineralization cartridge to ensure that there’s no white dust while the humidifier is running, as well as an EZCal Cleaner and Descaler for easier removal of limescale during maintenance.

Needless to say, Boneco has definitely gone the extra mile to create a product that’s convenient and easy to maintain. The U7147 is not just a feature-packed humidifier, though;  it’s quite powerful, too, with a warm and cool mist output of 3.4 gallons per day and 2.5 gallons per day, respectively. That’s the highest output amongst all the other humidifiers on this list. This means it’s able to do its job quickly. Furthermore, considering how powerful it is, the U7147 remains both quiet and energy efficient on all 3 output levels.

On the downside, the U7147 sells at a higher price compared to the other humidifiers on this list. That cost goes up over time, too, considering the cleaning accessories you’ll need to use and replace on a regular basis. And if it wasn’t already obvious, the U7147 is also incredibly high maintenance, as it needs to be cleaned as often as once a week. In addition, its bright LED light cannot be dimmed, which might be problematic if you’re planning to use it at night.

However, with all things considered, the U7147 is definitely still one of the best humidifiers on the market today, with unparalleled power and features. If you don’t mind taking the time to familiarize yourself with all its buttons and features, as well as have the patience to clean it on a regular basis, then the U7147 would be your best bet.


  • Large room coverage
  • Quiet operation
  • Automatic humidity control
  • Timer
  • Comes with cleaning and maintenance accessories
  • Humidifies quickly/high output
  • Energy efficient


  • Expensive (upfront and long-term)
  • High maintenance
  • Bright LCD light cannot be dimmed
  • Complicated to use

TaoTronics offers wildly popular products, and the TT-AH007 dual mist ultrasonic humidifier is no exception. For a mid-price humidifier, the TT-AH007 gives you all the features and power you would expect from a more expensive unit. With its 1.45 gallon tank, the TT-AH007 is capable of servicing large rooms up to around 600 sq. ft. in size.

In terms of performance, the TT-AH007 is pretty average with a daily output of 2.5 gallons for warm mist and 2.2 gallons for cool mist. Although not the best on this list, this output performance is already sufficient for most homes. Like the previous two humidifiers, the TT-AH007 also has several features like a humidistat, timer, sleep mode and auto mode – even at its more modest price point. In addition to those features, the TT-AH007 has a helpful memory function which allows you to go back to the settings you were using after restarting the humidifier. It also has a filter for removing impurities from the water.

Unfortunately, one huge downside to the TT-AH007 is that there have been several complaints about the warm mist option not functioning properly because the mist being produced isn’t warm at all. In addition, the filter that the TT-AH007 uses isn’t readily available for replacement purchase. The TT-AH007 has also been dubbed as “difficult to clean” and has a very short 1-year warranty.

Despite these flaws, the TT-AH007 is still a pretty solid dual mist ultrasonic humidifier. And, for its price, it provides power that’s more than enough to make most rooms comfortable at the right humidity.


  • Large room coverage
  • Affordable
  • Automatic humidity control
  • Timer
  • Lightweight
  • Quiet


  • Difficult to purchase replacement filters
  • Warm mist doesn’t always work
  • Difficult to clean
  • Short warranty

The SPT SU-4010 is a lightweight contender that delivers excellent humidification performance in spite of its affordable price and compact size. It may not be as popular or have as many features as the other humidifiers on this list, but it wins out in terms of ease of use, ease of maintenance, and performance.

The SU-4010 has all the basic features that a good humidifier should have: a low water indicator, an automatic shut off feature, a rotating nozzle, and a handle for easier mobility. While this may be very underwhelming at first glance, it also works out in favor for the SU-4010 because compared to the LV600HH and U7147, it is easier to use.

The controls are very straightforward and easy to understand, so even inexperienced individuals can use it. It’s also incredibly easy to fill, clean, and maintain, and doesn’t require any of the accessories that the U7147 has. As an added bonus, the SU-4010 is also highly energy efficient.

Another great feature of the SU-4010 is its Ion Exchange filter, which demineralizes and treats water to reduce calcium and magnesium present in hard water. This in turn prolongs the life of the humidifier, while at the same time preventing the spread of white dust, because it limits the development of limescale. The filter is affordable and only needs to be changed every 6 months, depending on how often you use your humidifier.

Unfortunately, compared to the other humidifiers on this list, the SU-4010 loses out in terms of daily humidity output (for both warm mist and cool mist) which means that it’ll take longer to humidify a room. In addition, it misses certain features that some people might be looking for in a humidifier like a timer and a humidistat. Furthermore, like a majority of the humidifiers on this list, the SU-4010 is backed by a measly 1-year warranty only.

However, several reviews still rave about the SU-4010 and claim that, despite its lower humidity output, it still does an excellent job of increasing and maintaining comfortable humidity levels in any room. If you’re looking for a small but powerful dual mist humidifier that packs a punch, then the SU-4010 could be the one for you.


  • Large room coverage
  • Affordable (upfront and long term)
  • Compact and lightweight
  • Energy efficient
  • Easy to use and maintain
  • Quiet Operation


  • Lower humidity output
  • Fewer features
  • Short warranty

Comparison Chart

FEATURESLevoit LV600HHBoneco Air-O-Swiss U7147TaoTronics TT-AH007SPT SU-4010
Type of MistCool & WarmCool & WarmCool & WarmCool & Warm
Type of HumidificationUltrasonicUltrasonicUltrasonicUltrasonic
Room Coverage753 sq. ft. 600 sq. ft.600 sq. ft. 500 sq. ft.
Tank Capacity1.5 gal1.5 gal1.45 gal1 gal
Humidification PerformanceWarm Mist: 3.17 gal/day

Cool Mist: 1.90 gal/day

Warm Mist: 3.4 gal/day

Cool Mist: 2.5 gal/day

Warm Mist: 2.5 gal/day

Cool Mist: 2.2 gal/day

Warm Mist: 2.5 gal/day

Cool mist: 2.0 gal/day

ControlsElectronicElectronicElectronicDial Knob
Water Low IndicatorYesYesYesYes
Automatic Shut OffYesYesYesYes
Weight6.31 lbs9 lbs6.42 lbs5 lbs
Dimensions11.3 x 7 x 10.514 x 11.6 x 11.611.2 x 10.4 x 13.613.2 x 5.3 x 12.4
Warranty2 years3 years1 year1 year

Buyer’s Guide:

Dual Mist Ultrasonic Humidifiers

An ultrasonic humidifier uses a diaphragm that vibrates at an ultrasonic frequency (thus the name) to create water droplets that are released in the form of mist. 

These types of humidifiers can either emit warm mist only, cool mist only, or both. An ultrasonic humidifier that can emit both warm and cool mist is called a dual mist ultrasonic humidifier. 

Because of these extra functions, dual mist ultrasonic humidifiers are typically more expensive, quieter, and require more maintenance as compared to other types of humidifiers

Alleviate cold and flu symptoms – If you’re suffering from cold and flu symptoms, using a humidifier at night may help you recover faster. It can moisten your nasal passages and allow you to breathe easier. Humidifiers may also help alleviate sore throat and sinus headaches.

Reduce allergies and asthma attacks – People who suffer from allergies or asthma tend to have a worsening of symptoms when the air is dry. Adding moisture to the air can help reduce allergens and any pollutants that may cause asthma attacks. Using a humidifier together with a high-quality air purifier will be even more effective at reducing allergens at home. 

Reduce frequency of infections – When air isn’t too dry, bacteria and viruses tend to be less infectious. Research has shown that a humidity level of 40% or higher decreased the infectivity of influenza virus by 14%.

Prevents dry skin – When your skin is exposed to dry air, it cracks and wrinkles more easily. It may become irritated and itchy, and even your scalp may be affected. To prevent this from happening, you should keep humidity levels at around 40% or higher. This is easy to achieve with a humidifier. 

Reduces snoring – Snoring can be caused by a throat that is too dry. Humidifiers can help moisten the respiratory tract and lessen both the noise and intensity of snoring by adding moisture to the air. 

Protect wooden furniture – Wooden furniture, walls, and floors are more prone to cracking and shrinking when humidity levels are low. This can lead to expensive repairs and even structural damage. A humidifier will help add moisture to the air to prevent this from happening. 

  • Versatility – Dual mist ultrasonic humidifiers are able to produce both warm and cool mist depending on what you need, making them more versatile options compared to single mist humidifiers.
  • More features – Dual mist ultrasonic humidifiers generally have more features compared to single mist humidifiers. These features include the essential features mentioned above as well as smart modes like auto mode and sleep mode which are really useful for people who want to set and forget their humidifiers. 
  • More benefits – Because they have the power of both cool mist and warm mist, you also get double the benefits!
  • Quiet – Ultrasonic humidifiers, regardless of whether they are single or dual mist, are generally quieter than other types of humidifiers. This is especially beneficial if you’ll be using one in your bedroom. 
  • More expensive – Because dual mist ultrasonic humidifiers use a more sophisticated system, they are also more expensive upfront. 
  • High maintenance – While this is true for humidifiers in general, dual mist ultrasonic humidifiers are even more high maintenance and will need to be cleaned more often than other types of humidifiers. 

  • Room coverage – When choosing a dual mist ultrasonic humidifier, you need to be mindful of the area you’ll need to cover. In the majority of cases, humidifiers are built with wider coverage in mind, but there are some compact models which are less capable. 

    Most ultrasonic dual mist humidifiers will offer coverage of between 500-900 sq.ft which should be more than enough for any room. Any humidifier at the higher end of this range will be more expensive and you’re unlikely to get any more benefit from its additional range. Therefore, models with lower to mid-range coverage are usually best value. 

  • Humidistat & Ease of Use – A built-in humidistat is a very useful feature as it helps you to monitor and control humidity levels in your home accurately. Also, whichever humidifier you pick, it’s important that it’s easy for you to use. A model with multiple features may be attractive at first, but if the controls are difficult to operate, enthusiasm will wane quickly and you’ll regret your choice. 
  • Water Capacity – If you’re planning to keep your humidifier running for long periods, it’s best to opt for a model which has a large tank capacity. Otherwise, you’ll find yourself having to refill the tank more than you’d like, which is time-consuming and inconvenient if you’re busy. A capacity of at least one gallon should be sufficient for daytime, while a three-gallon model will be enough to run for 24 hours or more, depending on performance.  
  • Performance – Capacity is one thing, but the amount of mist your ultrasonic humidifier can create from the water it holds depends on its performance. 

    Each humidifier should state how much water it is capable of vaporizing over a certain period of time. This is known as the ‘humidity output’ or ‘mist output’. There may be a separate figure for both warm and cool mist, as output can vary between them. 

    For efficient humidity control at home, you should look for a humidifier which can vaporize its tank capacity in no more than 24 hours.

Dual Mist Ultrasonic Humidifiers


  • Produce both warm & cool mist
  • Quiet operation
  • Often have multiple features
  • Versatile


  • More expensive
  • Create white dust
  • High maintenance
  • Require regular cleaning

  • Do Ultrasonic Humidifiers Leave White Dust?
  • Many humidifiers create white dust due to the presence of dissolved minerals in water. Both ultrasonic and evaporative humidifiers will create mineral dust which settles on your furniture, but ultrasonic humidifiers often create more because they usually lack filters. 

    That said, some ultrasonic humidifiers include ceramic cartridges which are somewhat effective in reducing the production of dust. You can also limit mineral dust by using purified and demineralized water, but this is quite expensive in the long run. 

  • Why Do Ultrasonic Humidifiers Need To Be Cleaned So Frequently?
  • All humidifiers must be cleaned regularly to prevent buildup of mold and bacteria. The warm, moist environment inside your humidifier is perfect for this, so if you do not clean your humidifier frequently, it will begin to circulate bacteria and spores which may negatively affect your health. 
  • How Often Will I Need To Refill a Dual Mist Ultrasonic Humidifier?
  • This depends on the capacity of your dual mist ultrasonic humidifier, how often you use it and how well it performs. Most ultrasonic humidifiers will clearly state how much water they are able to humidify over a period of time, either in terms of working capacity or volume usage per hour.  
  • Are Dual Mist Ultrasonic Humidifiers Safe For Children & Pets?
  • Generally, warm mist humidifiers should be avoided if they’re being used around children and pets. This is because when in warm mist mode, they can become dangerously hot, presenting a risk of scalds. 

    Therefore, if you have children or pets, it’s best to keep the humidifier well out of reach to protect against any accidents.

Final Thoughts

Although several studies have shown that warm mist humidifiers and cool mist humidifiers are equally effective at increasing humidity levels at home, it’s always nice to have the option of choosing one over the other depending on your needs.

Dual mist ultrasonic humidifiers give you the best of both worlds: the warmth and relief you get from a warm mist humidifier as well as the cool and refreshing feeling you get from a cool mist humidifier.

With the range of dual mist humidifiers available on the market today, it can be overwhelming and very difficult to choose. Lucky for you, we’ve taken it upon ourselves to come up with a list of the best dual mist ultrasonic humidifiers so that you don’t have to.

After much consideration, we’ve decided that the best dual mist ultrasonic humidifier that gives you the most bang for your buck is the Levoit LV600HH. It provides you with enough power whenever you need it and, even with an array of features and buttons, it is still relatively easy to use.

It’s also easy to clean and maintain without having to rely on any special accessories (we’re looking at you, Boneco U7147!) It’s definitely a solid, high-quality dual mist ultrasonic humidifier that’s well-rounded and highly effective at doing its job.

Further Reading